Henning Schomerus

Semiclassical transport in nearly symmetric quantum dots I: symmetry-breaking in the dot (2009)

This work presents a theory of the frequency-resolved light emission of active two-dimensional dielectric microresonators, which are characterized by a highly nonparaxial mode structure and...

Whitney, Robert S., Schomerus, Henning, Kopp, Marten

We apply the semiclassical theory of transport to quantum dots with exact and approximate spatial symmetries; left-right mirror symmetry, up-down mirror symmetry, inversion symmetry or four-fold...

Semiclassical transport in nearly symmetric quantum dots II: symmetry-breaking due to asymmetric leads (2009)

Whitney, Robert S., Schomerus, Henning, Kopp, Marten

In this work - the second of a pair of articles - we consider transport through spatially symmetric quantum dots with leads whose widths or positions do not obey the spatial symmetry. We use the...

Disorder-induced pseudodiffusive transport in graphene nanoribbons. (2009)

Dietl, P., Metalidis, G., Golubev, D., San-Jose, P., Prada, E., Schomerus, Henning, ...

We study the transition from ballistic to diffusive and localized transport in graphene nanoribbons in the presence of binary disorder, which can be generated by chemical adsorbates or substitutional...

Lifetime statistics in chaotic dielectric microresonators. (2009)

Schomerus, Henning, Wiersig, Jan, Main, Joerg

We discuss the statistical properties of lifetimes of electromagnetic quasibound states in dielectric microresonators with fully chaotic ray dynamics. Using the example of a resonator of stadium...

Disorder-induced pseudodiffusive transport in graphene nanoribbons (2009)

Dietl, Petra, Metalidis, Georgo, Golubev, Dmitri, San-Jose, Pablo, Prada, Elsa, Schomerus, Henning, ...

We study the transition from ballistic to diffusive and localized transport in graphene nanoribbons in the presence of binary disorder, which can be generated by chemical adsorbates or substitutional...

Pseudospintronics in bilayer graphene (2009)

San-Jose, Pablo, Prada, Elsa, McCann, Edward, Schomerus, Henning

Graphene is composed of two coupled sublattices and therefore supports an additional quantum number called pseudospin. In bilayer graphene, pseudospin is determined by the relative amplitude of the...

Lifetime statistics in chaotic dielectric microresonators (2008)

Schomerus, Henning, Wiersig, Jan, Main, Jörg

We discuss the statistical properties of lifetimes of electromagnetic eigenmodes in dielectric microresonators with fully chaotic ray dynamics. Using the example of a resonator of stadium geometry,...

Adsorbate-limited conductivity of graphene. (2008)

Robinson, John P., Schomerus, Henning, Oroszlany, Laszlo, Falko, Vladimir I.

We present a theory of electronic transport in graphene in the presence of randomly placed adsorbates. Our analysis predicts a marked asymmetry of the conductivity about the Dirac point, as well as a...

Enhanced quantum noise due to mode non-orthogonality in dielectric microresonators (2008)

Statistical correlations in a two-component Coulomb gas on a circle. (2008)

This work presents a theory of the frequency-resolved light emission of active two-dimensional dielectric microresonators, which are characterized by a highly non-paraxial mode structure and...

Adsorbate-limited conductivity of graphene (2008)

A recent paper (Jokela et al 2008 Preprint arXiv:0806.1491) contains a surmise about an expectation value in a Coulomb gas which interacts with an additional charge ξ that sits at a fixed position....

Robinson, John P., Schomerus, Henning, Oroszlany, Laszlo, Fal'ko, Vladimir I.

We present a theory of electronic transport in graphene in the presence of randomly placed adsorbates. Our analysis predicts a marked asymmetry of the conductivity about the Dirac point, as well as a...

Staggered repulsion of transmission eigenvalues in symmetric open mesoscopic systems. (2008)

Kopp, Marten, Schomerus, Henning, Rotter, Stefan

Quantum systems with discrete symmetries can usually be desymmetrized, but this strategy fails when considering transport in open systems with a symmetry that maps different openings onto each other....

Controlled decoherence in a quantum Lévy kicked rotator. (2008)

Statistical correlations in a Coulomb gas with a test charge (2008)

We develop a theory describing the dynamics of quantum kicked rotators (modeling cold atoms in a pulsed optical field) which are subjected to combined amplitude and timing noise generated by a...

Electron-electron relaxation in disordered interacting systems. (2008)

A recent paper [Jokela et al, arxiv:0806.1491 9 June 2008] contains a surmise about an expectation value in a Coulomb gas which interacts with an additional charge xi that sits at a fixed position....

Bozsoki , Peter, Varga , Imre, Schomerus, Henning

We study the relaxation of a non-equilibrium carrier distribution under the influence of the electron-electron interaction in the presence of disorder. Based on the Anderson model, our Hamiltonian is...

Model for chaotic dielectric microresonators. (2008)

Keating, J. P., Novaes, M., Schomerus , Henning

We develop a random-matrix model of two-dimensional dielectric resonators which combines internal wave chaos with the deterministic Fresnel laws for reflection and refraction at the interfaces. The...

Controlled decoherence in a quantum L\'evy kicked rotator (2008)

Josephson Junctions, Peter Samuelsson, Henning Schomerus

We develop a theory describing the dynamics of quantum kicked rotators (modelling cold atoms in a pulsed optical field) which are subjected to combined amplitude and timing noise generated by a...

b (2007)

In recent years there has been an increased interest in the nonequilibrium Josephson effect in multiterminal mesoscopic SNS-junctions. It has been shown in experiments that the Josephson current can...

Electron-electron Relaxation in Disordered Interacting Systems (2007)

Bozsoki, Peter, Varga, Imre, Schomerus, Henning

We study the relaxation of a non-equilibrium carrier distribution under the influence of the electron-electron interaction in the presence of disorder. Based on the Anderson model, our Hamiltonian is...

Staggered repulsion of transmission eigenvalues in symmetric open mesoscopic systems (2007)

Kopp, Marten, Schomerus, Henning, Rotter, Stefan

Quantum systems with discrete symmetries can usually be desymmetrized, but this strategy fails when considering transport in open systems with a symmetry that maps different openings onto each other....

Electronic transport in normal-conductor/graphene/normal-conductor junctions and conditions for insulating behavior at a finite charge-carrier density (2007)

Robinson, John P, Schomerus, Henning

We investigate the conductance of normal-conductor/graphene/normal-conductor (NGN) junctions for arbitrary on-site potentials in the normal and graphitic parts of the system. We find that a ballistic...

Entanglement between static and flying qubits in an Aharonov-Bohm double electrometer (2007)

Schomerus, Henning, Robinson, John P

. We consider the phase-coherent transport of electrons passing through an Aharonov–Bohm ring while interacting with a tunnel charge in a double quantum dot (representing a charge qubit) which...

Nonexponential decoherence and momentum subdiffusion in a quantum Levy kicked rotator (2007)

Effective contact model for transport through weakly-doped graphene (2007)

We investigate decoherence in the quantum kicked rotator (modeling cold atoms in a pulsed optical field) subjected to noise with power-law tail waiting-time distributions of variable exponent (Lévy...

Electronic transport in normal-conductor/graphene/normal-conductor junctions and conditions for insulating behavior at a finite charge-carrier density (2007)

Recent investigations address transport through ballistic charge-neutral graphene strips coupled to doped graphitic leads. This paper shows that identical transport properties arise when the leads...

Robinson, John P., Schomerus, Henning

We investigate the conductance of normal-conductor/graphene/normal-conductor (NGN) junctions for arbitrary on-site potentials in the normal and graphitic parts of the system. We find that a ballistic...

Entanglement between static and flying qubits in an Aharonov-Bohm double electrometer (2007)

Schomerus, Henning, Robinson, John P

. We consider the phase-coherent transport of electrons passing through an AharonovâBohm ring while interacting with a tunnel charge in a double quantum dot (representing a charge qubit) which...

Nonexponential decoherence and momentum subdiffusion in a quantum Levy kicked rotator (2007)

Effective contact model for transport through weakly-doped graphene (2007)

We investigate decoherence in the quantum kicked rotator (modeling cold atoms in a pulsed optical field) subjected to noise with power-law tail waiting-time distributions of variable exponent...

Electronic transport in normal-conductor/graphene/normal-conductor junctions and conditions for insulating behavior at a finite charge-carrier density (2007)

Recent investigations address transport through ballistic charge-neutral graphene strips coupled to doped graphitic leads. This paper shows that identical transport properties arise when the leads...

Robinson, John P., Schomerus, Henning

We investigate the conductance of normal-conductor/graphene/normal-conductor (NGN) junctions for arbitrary on-site potentials in the normal and graphitic parts of the system. We find that a ballistic...

Entanglement between static and flying qubits in an Aharonov-Bohm double electrometer. (2007)

Schomerus, Henning, Robinson, John P

. We consider the phase-coherent transport of electrons passing through an AharonovâBohm ring while interacting with a tunnel charge in a double quantum dot (representing a charge qubit) which...

Nonexponential decoherence and momentum subdiffusion in a quantum Levy kicked rotator. (2007)

Effective contact model for transport through weakly-doped graphene. (2007)

We investigate decoherence in the quantum kicked rotator (modeling cold atoms in a pulsed optical field) subjected to noise with power-law tail waiting-time distributions of variable exponent...

Electronic transport in normal-conductor/graphene/normal-conductor junctions and conditions for insulating behavior at a finite charge-carrier density . (2007)

Recent investigations address transport through ballistic charge-neutral graphene strips coupled to doped graphitic leads. This paper shows that identical transport properties arise when the leads...

Robinson, John P., Schomerus, Henning

We investigate the conductance of normal-conductor/graphene/normal-conductor (NGN) junctions for arbitrary on-site potentials in the normal and graphitic parts of the system. We find that a ballistic...

Generalized Galitskii approach for the vertex function of a Fermi gas with resonant interaction. (2007)

Vagov, A., Schomerus, Henning, Shanenko, A.

We present a generalized Galitskii approach for the Bethe-Salpeter equation for the two-particle vertex function of a Fermi system with the resonant interaction by accounting for the resonant state...

Nonexponential decoherence and momentum subdiffusion in a quantum L\'evy kicked rotator (2006)

Effective contact model for transport through weakly-doped graphene (2006)

We investigate decoherence in the quantum kicked rotator (modelling cold atoms in a pulsed optical field) subjected to noise with power-law tail waiting-time distributions of variable exponent (Levy...

Correcting ray optics at curved dielectric microresonator interfaces: Phase-space unification of Fresnel filtering and the Goos-Haenchen shift (2006)

Recent investigations address transport through ballistic charge-neutral graphene strips coupled to doped graphitic leads. This paper shows that identical transport properties arise when the leads...

Non-universal suppression of the excitation gap in chaotic Andreev billiards: Superconducting terminals as sensitive probes for scarred states (2006)

We develop an amended ray optics description for reflection at the curved dielectric interfaces of optical microresonators which improves the agreement with wave optics by about one order of...

Entanglement between static and flying qubits in an Aharonov-Bohm double electrometer (2006)

When a quantum-chaotic normal conductor is coupled to a superconductor, random-matrix theory predicts that a gap opens up in the excitation spectrum which is of universal size $E_g^{\rm RMT}\approx...

Schomerus, Henning, Robinson, John P.

We consider the phase-coherent transport of electrons passing through an Aharonov-Bohm ring while interacting with a tunnel charge in a double quantum dot (representing a charge qubit) which couples...

Correcting ray optics at curved dielectric microresonator interfaces: Phase-space unification of Fresnel filtering and the Goos-Hanchen shift (2006)

Superconducting terminals as sensitive probes for scarred states (2006)

We develop an amended ray-optics description for reflection at the curved dielectric interfaces of optical microresonators which improves the agreement with wave optics by about one order of...

Transport in chaotic quantum dots: Effects of spatial symmetries which interchange the leads (2006)

When a quantum-chaotic normal conductor is coupled to a superconductor, the random-matrix theory (RMT) predicts that a gap opens up in the excitation spectrum which is of universal size E_g^RMT...

Gopar, Victor A., Rotter, Stefan, Schomerus, Henning

We investigate the effect of spatial symmetries on phase coherent electronic transport through chaotic quantum dots. For systems which have a spatial symmetry that interchanges the source and drain...

Correcting ray optics at curved dielectric microresonator interfaces: Phase-space unification of Fresnel filtering and the Goos-Hanchen shift (2006)

Superconducting terminals as sensitive probes for scarred states (2006)

We develop an amended ray-optics description for reflection at the curved dielectric interfaces of optical microresonators which improves the agreement with wave optics by about one order of...

Transport in chaotic quantum dots: Effects of spatial symmetries which interchange the leads (2006)

When a quantum-chaotic normal conductor is coupled to a superconductor, the random-matrix theory (RMT) predicts that a gap opens up in the excitation spectrum which is of universal size E_g^RMT...

Gopar, Victor A., Rotter, Stefan, Schomerus, Henning

We investigate the effect of spatial symmetries on phase coherent electronic transport through chaotic quantum dots. For systems which have a spatial symmetry that interchanges the source and drain...

Correcting ray optics at curved dielectric microresonator interfaces: Phase-space unification of Fresnel filtering and the Goos-Hanchen shift. (2006)

Superconducting terminals as sensitive probes for scarred states. (2006)

We develop an amended ray-optics description for reflection at the curved dielectric interfaces of optical microresonators which improves the agreement with wave optics by about one order of...

Transport in chaotic quantum dots: Effects of spatial symmetries which interchange the leads . (2006)

When a quantum-chaotic normal conductor is coupled to a superconductor, the random-matrix theory (RMT) predicts that a gap opens up in the excitation spectrum which is of universal size E_g^RMT...

Gopar, Victor A., Rotter, Stefan, Schomerus, Henning

We investigate the effect of spatial symmetries on phase coherent electronic transport through chaotic quantum dots. For systems which have a spatial symmetry that interchanges the source and drain...

Transport in chaotic quantum dots: effects of spatial symmetries which interchange the leads (2005)

Gopar, Victor A., Rotter, Stefan, Schomerus, Henning

We investigate the effect of spatial symmetries on phase coherent electronic transport through chaotic quantum dots. For systems which have a spatial symmetry that interchanges the source and drain...

Non-Markovian master equations from entanglement with stationary unobserved degrees of freedom (2005)

Budini, A. A., Schomerus, Henning

We deduce a class of non-Markovian completely positive master equations which describe a system in a composite bipartite environment, consisting of a Markovian reservoir and additional stationary...

Quantum-to-classical correspondence in open chaotic systems (2005)

Schomerus, Henning, Jacquod, Philippe

We review properties of open chaotic mesoscopic systems with a finite Ehrenfest time tau_E. The Ehrenfest time separates a short-time regime of the quantum dynamics, where wave packets closely follow...

Non-Markovian master equations from entanglement with stationary unobserved degrees of freedom (2004)

Budini, Adrian A., Schomerus, Henning

We deduce a class of non-Markovian completely positive master equations which describe a system in a composite bipartite environment, consisting of a Markovian reservoir and additional stationary...

Quantum-to-classical crossover of quasi-bound states in open quantum systems. (2004)

Schomerus, Henning, Tworzydo, Jakub

In the semiclassical limit of open ballistic quantum systems, we demonstrate the emergence of instantaneous decay modes guided by classical escape faster than the Ehrenfest time. The decay time of...

Antibunched photons emitted by a quantum point contact out of equilibrium. (2004)

Beenakker, C. W. J., Schomerus, Henning

Motivated by the experimental search for "GHz nonclassical light," we identify the conditions under which current fluctuations in a narrow constriction generate sub-Poissonian radiation. Antibunched...

Mechanical probes of resonances and quasi-bound states in irregularly shaped, amplifying dielectric micro-cavities. (2004)

Schomerus, Henning, Wiersig, Jan, Hentschel, Martina

We investigate whether the force and torque exerted by light pressure on an irregularly shaped dielectric resonator allow to detect resonant frequencies, delivering information complemental to the...

Quantum-to-classical crossover of quasi-bound states in open quantum systems (2004)

Schomerus, Henning, Tworzydlo, Jakub

In the semiclassical limit of open ballistic quantum systems, we demonstrate the emergence of instantaneous decay modes guided by classical escape faster than the Ehrenfest time. The decay time of...

Aharonov-Bohm physics with spin. I. geometric phases in one-dimensional ballistic rings. (2004)

Hentschel, Martina, Schomerus, Henning, Frustaglia, Diego, Richter, Klaus

We analytically calculate the spin-dependent electronic conductance through a one-dimensional ballistic ring in the presence of an inhomogeneous magnetic field and identify signatures of geometric...

Electron-electron dynamics in laser-induced nonsequential double ionization. (2004)

Schomerus, Henning, Liu, X., Becker, W.

For the description of nonsequential double ionization (NSDI) of rare-gas atoms by a strong linearly polarized laser field, the quantum-mechanical S-matrix diagram that incorporates rescattering...

Coulomb repulsion and quantum-classical correspondence in laser-induced nonsequential double ionization. (2004)

Liu, X., Becker, W., Schomerus, Henning

The influence of electron-electron Coulomb repulsion on nonsequential double ionization of rare-gas atoms is investigated. Several variants of the quantum-mechanical transition amplitude are...

Aharonov-Bohm Physics with Spin I: Geometric Phases in One-dimensional Ballistic Rings (2004)

Hentschel, Martina, Schomerus, Henning, Frustaglia, Diego, Richter, Klaus

We analytically calculate the spin-dependent electronic conductance through a one-dimensional ballistic ring in the presence of an inhomogeneous magnetic field and identify signatures of geometric...

Antibunched photons emitted by a quantum point contact out of equilibrium (2004)

Beenakker, CWJ, Schomerus, Henning

Motivated by the experimental search for "GHz nonclassical light," we identify the conditions under which current fluctuations in a narrow constriction generate sub-Poissonian radiation. Antibunched...

Quantum-to-classical crossover of quasi-bound states in open quantum systems (2004)

Schomerus, Henning, Tworzydo, Jakub

In the semiclassical limit of open ballistic quantum systems, we demonstrate the emergence of instantaneous decay modes guided by classical escape faster than the Ehrenfest time. The decay time of...

Aharonov-Bohm physics with spin. I. geometric phases in one-dimensional ballistic rings (2004)

Hentschel, Martina, Schomerus, Henning, Frustaglia, Diego, Richter, Klaus

We analytically calculate the spin-dependent electronic conductance through a one-dimensional ballistic ring in the presence of an inhomogeneous magnetic field and identify signatures of geometric...

Optomechanical probes of resonances in amplifying microresonators (2004)

Schomerus, Henning, Wiersig, Jan, Hentschel, Martina

We investigate whether the force and torque exerted by light pressure on an irregularly shaped dielectric resonator allow to detect resonant frequencies, delivering information complemental to the...

Antibunched photons emitted by a quantum point contact out of equilibrium (2004)

Beenakker, CWJ, Schomerus, Henning

Motivated by the experimental search for "GHz nonclassical light," we identify the conditions under which current fluctuations in a narrow constriction generate sub-Poissonian radiation. Antibunched...

Quantum-to-classical crossover of quasi-bound states in open quantum systems (2004)

Schomerus, Henning, Tworzydo, Jakub

In the semiclassical limit of open ballistic quantum systems, we demonstrate the emergence of instantaneous decay modes guided by classical escape faster than the Ehrenfest time. The decay time of...

Aharonov-Bohm physics with spin. I. geometric phases in one-dimensional ballistic rings (2004)

Hentschel, Martina, Schomerus, Henning, Frustaglia, Diego, Richter, Klaus

We analytically calculate the spin-dependent electronic conductance through a one-dimensional ballistic ring in the presence of an inhomogeneous magnetic field and identify signatures of geometric...

Optomechanical probes of resonances in amplifying microresonators (2004)

Schomerus, Henning, Wiersig, Jan, Hentschel, Martina

We investigate whether the force and torque exerted by light pressure on an irregularly shaped dielectric resonator allow to detect resonant frequencies, delivering information complemental to the...

Optomechanical probes of resonances in amplifying microresonators. (2004)

Schomerus, Henning, Wiersig, Jan, Hentschel, Martina

We investigate whether the force and torque exerted by light pressure on an irregularly shaped dielectric resonator allow to detect resonant frequencies, delivering information complemental to the...

Aharonov-Bohm Physics with Spin I: Geometric Phases in One-dimensional Ballistic Rings (2004)

Hentschel, Martina, Schomerus, Henning, Frustaglia, Diego, Richter, Klaus

We analytically calculate the spin-dependent electronic conductance through a one-dimensional ballistic ring in the presence of an inhomogeneous magnetic field and identify signatures of geometric...

Opto-mechanical probes of resonances in amplifying microresonators (2003)

Schomerus, Henning, Wiersig, Jan, Hentschel, Martina

We investigate whether the force and torque exerted by light pressure on an irregularly shaped dielectric resonator allow to detect resonant frequencies, delivering information complemental to the...

Quantum Andreev Map: A Paradigm of Quantum Chaos in Superconductivity. . (2003)

Jacquod, Ph., Schomerus, Henning, Beenakker, C. W. J.

We introduce quantum maps with particle-hole conversion (Andreev reflection) and particle-hole symmetry, which exhibit the same excitation gap as quantum dots in the proximity to a superconductor....

Quasibound states at thresholds in multichannel impurity scattering (2003)

Quasibound states at thresholds in multichannel impurity scattering (2003)

We investigate the threshold behaviour of transmission resonances and quasibound states in the multichannel scattering problems of a one-dimensional (1D) time-dependent impurity potential, and the...

Quasibound states at thresholds in multichannel impurity scattering. (2003)

We investigate the threshold behaviour of transmission resonances and quasibound states in the multichannel scattering problems of a one-dimensional (1D) time-dependent impurity potential, and the...

Husimi functions at dielectric interfaces: Inside-outside duality for optical systems and beyond (2002)

We investigate the threshold behaviour of transmission resonances and quasibound states in the multichannel scattering problems of a one-dimensional (1D) time-dependent impurity potential, and the...

Hentschel, Martina, Schomerus, Henning, Schubert, Roman

We introduce generalized Husimi functions at the interfaces of dielectric systems. Four different functions can be defined, corresponding to the incident and departing wave on both sides of the...

Die semiklassische Rolle periodischer Bahnen im gemischten Phasenraum (2002)

Quasibound states at thresholds in multichannel impurity scattering (2002)

Es wird eine semiklassische Strategie entwickelt, die die Berechnung von Energiespektren quantenmechanischer Systeme aus periodischen Bahnen erlaubt, wobei der klassische Phasenraum der Systeme...

Fresnel laws at curved dielectric interfaces of microresonators (2002)

We investigate the threshold behavior of transmission resonances and quasibound states in the multichannel scattering problems of a one dimensional (1D) time-dependent impurity potential, and the...

Hentschel, Martina, Schomerus, Henning

We discuss curvature corrections to Fresnel’s laws for the reflection and transmission of light at a nonplanar refractive-index boundary. The reflection coefficients are obtained from the...

Fresnel laws at curved dielectric interfaces of microresonators (2002)

Hentschel, Martina, Schomerus, Henning

We discuss curvature corrections to Fresnelâs laws for the reflection and transmission of light at a nonplanar refractive-index boundary. The reflection coefficients are obtained from the...

Fresnel laws at curved dielectric interfaces of microresonators. (2002)

Hentschel, Martina, Schomerus, Henning

We discuss curvature corrections to Fresnelâs laws for the reflection and transmission of light at a nonplanar refractive-index boundary. The reflection coefficients are obtained from the...

Counting Statistics of Photons Produced by Electronic Shot Noise. (2001)

Beenakker, C. W. J., Schomerus, Henning

A theory is presented for the photodetection statistics of radiation produced by current fluctuations in a phase-coherent conductor. Deviations are found from the Poisson statistics that would result...

Semiclassical singularities from bifurcating orbits (2001)

Semiclassical singularities from bifurcating orbits (2001)

We investigated numerically, for a generic quantum system (a kicked top), how the singular behavior of classical systems at bifurcations is reflected by their quantum counterpart. Good agreement is...

Semiclassical singularities from bifurcating orbits. (2001)

We investigated numerically, for a generic quantum system (a kicked top), how the singular behavior of classical systems at bifurcations is reflected by their quantum counterpart. Good agreement is...

Semiclassical singularities from bifurcating orbits (1999)

We investigated numerically, for a generic quantum system (a kicked top), how the singular behavior of classical systems at bifurcations is reflected by their quantum counterpart. Good agreement is...

Twofold-broken rational tori and the uniform semiclassical approximation (1999)

We study how the singular behaviour of classical systems at bifurcations is reflected by their quantum counterpart. The semiclassical contributions of individual periodic orbits to trace formulae of...

Conductance enhancement in quantum point contact-semiconductor-superconductor devices (1999)

We investigate broken rational tori consisting of a chain of four (rather than two) periodic orbits. The normal form that describes this configuration is identified and used to construct a uniform...

Mortensen, Niels Asger, Jauho, Antti-Pekka, Flensberg, Karsten, Schomerus, Henning

We present numerical calculations of the conductance of an interface between a phase-coherent two-dimensional electron gas and a superconductor with a quantum point contact in the normal region....

Conductance enhancement in quantum-point-contact semiconductor-superconductor devices (1999)

Mortensen, Niels Asher, Jauho, Antti-Pekka, Flensberg, Karsten, Schomerus, Henning

We present numerical calculations of the conductance of an interface between a phase-coherent two-dimensional electron gas and a superconductor with a quantum point contact in the normal region....

Conductance enhancement in quantum-point-contact semiconductor-superconductor devices (1999)

Mortensen, Niels Asher, Jauho, Antti-Pekka, Flensberg, Karsten, Schomerus, Henning

We present numerical calculations of the conductance of an interface between a phase-coherent two-dimensional electron gas and a superconductor with a quantum point contact in the normal region....

Conductance enhancement in quantum-point-contact semiconductor-superconductor devices . (1999)

Mortensen, Niels Asher, Jauho, Antti-Pekka, Flensberg, Karsten, Schomerus, Henning

We present numerical calculations of the conductance of an interface between a phase-coherent two-dimensional electron gas and a superconductor with a quantum point contact in the normal region....

Periodic orbits near bifurcations of codimension two: Classical mechanics, semiclassics and Stokes transitions (1998)

Uniform approximation for period-quadrupling bifurcations (1998)

We investigate classical and semiclassical aspects of codimension-two bifurcations of periodic orbits in Hamiltonian systems. A classification of these bifurcations in autonomous systems with two...

Periodic orbits near bifurcations of codimension two: Classical mechanics, semiclassics and Stokes transitions (1998)

Abstract. We derive a uniform approximation for semiclassical contributions of periodic orbits to the spectral density which is valid for generic period-quadrupling bifurcations in systems with a...

Uniform approximation for period-quadrupling bifurcations (1998)

We investigate classical and semiclassical aspects of codimension-two bifurcations of periodic orbits in Hamiltonian systems. A classification of these bifurcations in autonomous systems with two...

Periodic orbits near bifurcations of codimension two: Classical mechanics, semiclassics and Stokes transitions. (1998)

Abstract. We derive a uniform approximation for semiclassical contributions of periodic orbits to the spectral density which is valid for generic period-quadrupling bifurcations in systems with a...

Uniform approximation for period-quadrupling bifurcations. (1998)

We investigate classical and semiclassical aspects of codimension-two bifurcations of periodic orbits in Hamiltonian systems. A classification of these bifurcations in autonomous systems with two...

Die semiklassische Rolle periodischer Bahnen im gemischten Phasenraum (1997)

Abstract. We derive a uniform approximation for semiclassical contributions of periodic orbits to the spectral density which is valid for generic period-quadrupling bifurcations in systems with a...

Periodic orbits near bifurcations of codimension two: Classical mechanics, semiclassics, and Stokes transitions (1997)

Es wird eine semiklassische Strategie entwickelt, die die Berechnung von Energiespektren quantenmechanischer Systeme aus periodischen Bahnen erlaubt, wobei der klassische Phasenraum der Systeme...

Uniform Approximation for Period-Quadrupling Bifurcations (1997)

We investigate classical and semiclassical aspects of codimension--two bifurcations of periodic orbits in Hamiltonian systems. A classification of these bifurcations in autonomous systems with two...

Semiclassical spectra from periodic-orbit clusters in a mixed phase space (1997)

We derive a uniform approximation for semiclassical contributions of periodic orbits to the spectral density which is valid for generic period-quadrupling bifurcations in systems with a mixed phase...

Schomerus, Henning, Haake, Fritz

We determine semiclassical quasienergy spectra from periodic orbits for a system with a mixed phase space, the kicked top. Throughout the transition from integrability to well developed chaos the...

Semiclassical interference of bifurcations (1997)

Bifurcations of Periodic Orbits and Uniform Approximations (1997)

In semiclassical studies of systems with mixed phase space, the neighbourhood of bifurcations of co-dimension two is felt strongly even though such bifurcations are ungeneric in classical mechanics....

Bifurcations of periodic orbits and uniform approximations (1997)

We derive uniform approximations for contributions to Gutzwiller's periodic-orbit sum for the spectral density which are valid close to bifurcations of periodic orbits in systems with mixed phase...

Bifurcations of periodic orbits and uniform approximations (1997)

We derive uniform approximations for contributions to Gutzwiller's periodic-orbit sum for the spectral density which are valid close to bifurcations of periodic orbits in systems with mixed phase...

Bifurcations of periodic orbits and uniform approximations. (1997)

We derive uniform approximations for contributions to Gutzwiller's periodic-orbit sum for the spectral density which are valid close to bifurcations of periodic orbits in systems with mixed phase...