Experimental feedback control of quantum systems using weak measurements (2009)
Gillett, G. G., Dalton, R. B., Lanyon, B. P., Almeida, M. P., Barbieri, M., Pryde, G. J., ...
A goal of the emerging field of quantum control is to develop methods for quantum technologies to function robustly in the presence of noise. Central issues are the fundamental limitations on the...
Leger, A., Rouan, D., Schneider, J., Barge, P., Fridlund, M., Samuel, B., ...
We report the discovery of very shallow (DF/F = 3.4 10-4), periodic dips in the light curve of an active V = 11.7 G9V star observed by the CoRoT satellite, which we interpret as due to the presence...
Leger, A, Rouan, D, Schneider, J, Barge, P, Fridlund, M, Samuel, B, ...
We report the discovery of very shallow (DF/F = 3.4 10-4), periodic dips in the light curve of an active V = 11.7 G9V star observed by the CoRoT satellite, which we interpret as due to the presence...
The secondary eclipse of CoRoT-1b (2009)
Alonso, R., Alapini, A., Aigrain, S., Auvergne, M., Baglin, A., Barbieri, M., ...
The transiting planet CoRoT-1b is thought to belong to the pM-class of planets, in which the thermal emission dominates in the optical wavelengths. We present a detection of its secondary eclipse in...
Violation of the Leggett-Garg inequality with weak measurements of photons (2009)
Goggin, M. E., Almeida, M. P., Barbieri, M., Lanyon, B. P., O'Brien, J. L., White, A. G., ...
By weakly measuring the polarization of a photon between two strong polarization measurements, we experimentally investigate the correlation between the appearance of anomalous values in quantum weak...
Noise properties of the CoRoT data: a planet-finding perspective (2009)
Aigrain, S., Pont, F., Fressin, F., Alapini, A., Alonso, R., Auvergne, M., ...
In this short paper, we study the photometric precision of stellar light curves obtained by the CoRoT satellite in its planet finding channel, with a particular emphasis on the timescales...
Effect of substrate roughness on c-oriented AlN thin films (2009)
Artieda, A., Barbieri, M., Silviu Sandu, C., Muralt, P.
(001)-textured AlN thin films as needed for bulk acoustic wave devices exhibit large mechanical stress variations as a function of growth substrate properties. We studied the relationship between...
Noise properties of the CoRoT data. A planet-finding perspective (2009)
Aigrain, S, Pont, F, Fressin, F, Alapini, A, Alonso, R, Auvergne, M, ...
Deeg, H J, Gillon, Michaël, Shporer, A, Rouan, D, Stecklum, B, Aigrain, S, ...
The motivation, techniques and performance of the ground-based photometric follow-up of transit detections by the CoRoT space mission are presented. Its principal raison d’être arises from the...
Characterization of the HD 17156 planetary system (2008)
Barbieri, M., Alonso, R., Desidera, S., Sozzetti, A., Fiorenzano, A. F. Martinez, Almenara, J. M., ...
AIMS : To improve the parameters of the HD 17156 system (peculiar due to the eccentric and long orbital period of its transiting planet) and constrain the presence of stellar companions. METHODS :...
Deleuil, M, Deeg, H J, Alonso, R, Bouchy, F, Rouan, D, Auvergne, M, ...
Context: The CoRoT space mission routinely provides high-precision photometric measurements of thousands of stars that have been continuously observed for months. Aims: The discovery and...
Moutou, C, Bruntt, H, Guillot, T, Shporer, A, Guenther, E, Aigrain, S, ...
Aims. The CoRoT satellite has announced its fourth transiting planet (Aigrain et al. 2008, A&A, 488, L43) with space photometry. We describe and analyse complementary observations of this system...
Experimental quantum computing without entanglement (2008)
Lanyon, B. P., Barbieri, M., Almeida, M. P., White, A. G.
Entanglement is widely believed to lie at the heart of the advantages offered by a quantum computer. This belief is supported by the discovery that a noiseless (pure) state quantum computer must...
Alonso, R, Auvergne, M, Baglin, A, Ollivier, M, Moutou, C, Rouan, D, ...
Context: The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations of ~12 000 stars in the galactic plane. An analysis of the raw data...
Limits to the planet candidate GJ 436c (2008)
Alonso, R., Barbieri, M., Rabus, M., Deeg, H. J., Belmonte, J. A., Almenara, J. M.
We report on H-band, ground-based observations of a transit of the hot Neptune GJ 436b. Once combined to achieve sampling equivalent to archived observations taken with Spitzer, our measurements...
Quantum computing using shortcuts through higher dimensions (2008)
Lanyon, B. P., Barbieri, M., Almeida, M. P., Jennewein, T., Ralph, T. C., Resch, K. J., ...
Quantum computation offers the potential to solve fundamental yet otherwise intractable problems across a range of active fields of research. Recently, universal quantum-logic gate sets - the...
Barge, P., Baglin, A., Auvergne, M., Rauer, H., Leger, A., Schneider, J., ...
Context. The pioneer space mission for photometric planet searches, CoRoT, steadily monitors about 12,000 stars in each of its fields of view; it is able to detect transit candidates early in the...
Alonso, R., Auvergne, M., Baglin, A., Ollivier, M., Moutou, C., Rouan, D., ...
Context. The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations of ~12000 stars in the galactic plane. An analysis of the raw data...
Mancini, M.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia, D'Anastasio, E.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione CNT, Roma, Italia, Barbieri, M.; Dipartimento Di Scienze Della Terra, Università Degli Studi Di Roma “La Sapienza”, Piazzale Aldo Moro 5, 00185 Roma, Italy, De Martini, P. M.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia
Invited reply to the Comment on: “Geomorphological, paleontological and 87Sr/86Sr isotope analyses on early Pleistocene paleoshorelines to define the uplift of Central Apennines (Italy)”
Alonso, R., Auvergne, M., Baglin, A., Ollivier, M., Moutou, C., Rouan, D., ...
Context. The CoRoT mission, a pioneer in exoplanet searches from space, has completed its first 150 days of continuous observations of ~12 000 stars in the galactic plane. An analysis of the raw data...
Moutou, C, Bruntt, H, Guillot, T, Shporer, A, Günther, E, Aigrain, S, ...
Deleuil, M, Deeg, H, Alonso, R, Bouchy, F, Rouan, D, Auvergne, M, ...
Experimental Quantum Computing without Entanglement (2008)
Lanyon, B. P., Barbieri, M., Almeida, M. P., White, A. G.
Deterministic quantum computation with one pure qubit (DQC1) is an efficient model of computation that uses highly mixed states. Unlike pure-state models, its power is not derived from the generation...
S. Desidera, R. G. Gratton, M. Endl, M. Barbieri, R. U. Claudi, R. Cosentino, ...
(DOI: will be inserted by hand later) A search for planets in the metal-enriched binary HD 219542
Astronomy Astrophysics manuscript no. Gd052 May 4, 2004 (2007)
Doi Will Be, S. Desidera, R. G. Gratton, M. Endl, R. U. Claudi, R. Cosentino, ...
The star HD 219542B has been reported by us (Desidera et al. 2003) to show low-amplitude radial velocity variations that could be due to the presence of a Saturn-mass planetary companion or to...
HD 17156b: A Transiting Planet with a 21.2 Day Period and an Eccentric Orbit (2007)
Barbieri, M., Alonso, R., Laughlin, G., Almenara, J. M., Bissinger, R., Davies, D., ...
We report the detection of transits by the 3.1 M_Jup companion to the V=8.17 G0V star HD 17156. The transit was observed by three independant observers on Sept. 9/10, 2007 (two in central Italy and...
Dispersal of planets hosted in binaries, transitional members of multiple star systems (2007)
This paper explains why planets in binary star systems might have a lower frequency. A transient triple state of the binary causes the dispersal of planets.
Desidera, S., Gratton, R., Endl, M., Fiorenzano, A. F. Martinez, Barbieri, M., Claudi, R., ...
In this chapter of the book "Planets in binaries" we summarize our recent work on the statistical properties of planets in binaries and the differences with respect to planets orbiting single stars....
Experimental demonstration of Shor's algorithm with quantum entanglement (2007)
Lanyon, B. P., Weinhold, T. J., Langford, N. K., Barbieri, M., James*, D. F. V., Gilchrist, A., ...
Shor's powerful quantum algorithm for factoring represents a major challenge in quantum computation and its full realization will have a large impact on modern cryptography. Here we implement a...
A new search for planet transits in NGC 6791 (2007)
Montalto, M., Piotto, G., Desidera, S., De Marchi, F., Bruntt, H., Stetson, P. B., ...
Context. Searching for planets in open clusters allows us to study the effects of dynamical environment on planet formation and evolution. Aims. Considering the strong dependence of planet frequency...
Planets in binary systems: is the present configuration indicative of the formation process? (2007)
The present dynamical configuration of planets in binary star systems may not reflect their formation process since the binary orbit may have changed in the past after the planet formation process...
Giaccio, B.; Istituto Di Geologia Ambientale E Geoingegneria, CNR, Sposato, A.; Istituto Di Geologia Ambientale E Geoingegneria, CNR, Gaeta, M.; Dipartimento Di Scienze Della Terra, Universita` Di Roma ‘‘La Sapienza’’, Marra, F.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia, Palladino, D. M.; Dipartimento Di Scienze Della Terra, Universita` Di Roma ‘‘La Sapienza’’, Taddeucci, J.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia, ...
The Late Pleistocene Albano Maar hosted the most recent volcanic activity of the Colli Albani Volcanic District, represented at nearvent sections by a thick pyroclastic succession of seven units...
Marcel, T.C., Varshney, R.K., Barbieri, M., Jafary, H., Graner, A., ...
A consensus map of barley was constructed based on three reference doubled haploid (DH) populations and three recombinant inbred line (RIL) populations. Several sets of microsatellites were used as...
Mancini, M.; CNR-Istituto Di Geologia Ambientale E Geoingegneria, D'Anastasio, E.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione CNT, Roma, Italia, Barbieri, M.; Università Degli Studi Di Roma "La Sapienza", Dipartimento Di Scienze Della Terra, De Martini, P. M.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia
The eastern border of the Middle Valley of the Tiber River is characterized by several Plio-Pleistocene paleoshorelines, which extend for about 100 km along the western margin of the Central...
Experiments of quantum nonlocality with polarization-momentum entangled photon pairs (2007)
Vallone, G, Mataloni, P, De Martini, F, Barbieri, M
We present the results of some experimental tests of quantum nonlocality performed by two-photon states, entangled both in polarization and momentum, namely hyperentangled states and two-photon...
Bose-Einstein coalescence of independent photons at the surface of a beam splitter is the physical process that allows linear optical quantum gates to be built. When distinct parametric...
Quantum nonlocality of polarization-momentum hyper-entangled states (2007)
Barbieri, M, De Martini, F, Mataloni, P, Vallone, G
We present two experimental tests of nonlocality, namely the Bell's inequalities and the "All Versus Nothing" (AVN) proof, performed with a two photon hyper-entangled state, entangled in polarization...
Barbieri, M, Vallone, G, Mataloni, P, De Martini, F
A complete and deterministic Bell state measurement was realized by a simple linear optics experimental scheme which adopts two-photon polarization-momentum hyperentanglement. The scheme, which is...
Bose-Einstein coalescence of independent photons at the surface of a beam splitter is the physical process that allows linear optical quantum gates to be built. When distinct parametric...
Experimental realization of polarization qutrits from nonmaximally entangled states (2007)
Based on a recent proposal [Phys. Rev. A 71, 062337 (2005)], we have experimentally realized two-photon polarization qutrits by using nonmaximally entangled states and linear optical transformations....
Lanyon, B. P., Weinhold, T. J., Langford, N. K., Barbieri, M., James, D. F. V., Gilchrist, A., ...
Shor's powerful quantum algorithm for factoring represents a major challenge in quantum computation. Here, we implement a compiled version in a photonic system. For the first time, we demonstrate the...
Experiments of Quantum Nonlocality with Polarization-Momentum Entangled Photon Pairs (2007)
Vallone, G., Mataloni, P., De Martini, F., Barbieri, M.
Abstract We present the results of some experimental tests of quantum nonlocality performed by two-photon states, entangled both in polarization and momentum, namely hyperentangled states and...
Barbieri, M, Vallone, G, Mataloni, P, De Martini, F
A complete and deterministic Bell state measurement was realized by a simple linear optics experimental scheme which adopts two-photon polarization-momentum hyperentanglement. The scheme, which is...
Bose-Einstein coalescence of independent photons at the surface of a beam splitter is the physical process that allows linear optical quantum gates to be built. When distinct parametric...
Experimental realization of polarization qutrits from nonmaximally entangled states (2007)
Based on a recent proposal [Phys. Rev. A 71, 062337 (2005)], we have experimentally realized two-photon polarization qutrits by using nonmaximally entangled states and linear optical transformations....
Lanyon, B. P., Weinhold, T. J., Langford, N. K., Barbieri, M., James, D. F. V., Gilchrist, A., ...
Shor's powerful quantum algorithm for factoring represents a major challenge in quantum computation. Here, we implement a compiled version in a photonic system. For the first time, we demonstrate the...
Experiments of Quantum Nonlocality with Polarization-Momentum Entangled Photon Pairs (2007)
Vallone, G., Mataloni, P., De Martini, F., Barbieri, M.
Abstract We present the results of some experimental tests of quantum nonlocality performed by two-photon states, entangled both in polarization and momentum, namely hyperentangled states and...
Lanyon, B.P., Weinhold, Till, Langford, N.K., Barbieri, M., James, D.F.V., Gilchrist, A., ...
Shor's powerful quantum algorithm for factoring represents a major challenge in quantum computation. Here, we implement a compiled version in a photonic system. For the first time, we demonstrate the...
Lanyon, B.P., Weinhold, Till, Langford, N.K., Barbieri, M., James, D.F.V., Gilchrist, A., ...
Shor's powerful quantum algorithm for factoring represents a major challenge in quantum computation. Here, we implement a compiled version in a photonic system. For the first time, we demonstrate the...
Lanyon, B.P., Weinhold, Till, Langford, N.K., Barbieri, M., James, D.F.V., Gilchrist, A., ...
Shor's powerful quantum algorithm for factoring represents a major challenge in quantum computation. Here, we implement a compiled version in a photonic system. For the first time, we demonstrate the...
Properties of planets in binary systems. The role of binary separation (2006)
The statistical properties of planets in binaries were investigated. Any difference to planets orbiting single stars can shed light on the formation and evolution of planetary systems. As planets...
Barbieri, M., Vallone, G., Mataloni, P., De Martini, F.
A complete and deterministic Bell state measurement was realized by a simple linear optics experimental scheme which adopts 2-photon polarization-momentum hyperentanglement. The scheme, which is...
Quattrocchi, F.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia, Barbieri, M.; IGAR-CNR, Bencini, R.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia, Cinti, D.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia, Durocher, K.; Alberta Research Council,, Galli, G.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia, ...
EnCana’s CO2 injection EOR project at Weyburn Saskatchewan (Canada) is the focal point of a multi-faceted research program, sponsored by the IEA GHG R&D and numerous international industrial and...
Barbieri, M., Cinelli, C., De Martini, F., Mataloni, P.
Photon pairs, highly entangled in polarization have been generated under femtosecond laser pulse excitation by a type I crystal source, operating in a single arm interferometric scheme. The relevant...
Giaccio, B.; Istituto Di Geologia Ambientale E Geoingegneria, CNR, Via Bolognola 7, 00138 Rome, Italy, Sposato, A.; Istituto Di Geologia Ambientale E Geoingegneria, CNR, Via Bolognola 7, 00138 Rome, Italy, Gaeta, M.; Dipartimento Di Scienze Della Terra, Universita` Di Roma ‘‘La Sapienza’’, Rome, Italy, Marra, F.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia, Palladino, D. M.; Dipartimento Di Scienze Della Terra, Universita` Di Roma ‘‘La Sapienza’’, Rome, Italy, Taddeucci, J.; Istituto Nazionale Di Geofisica E Vulcanologia, Sezione Roma1, Roma, Italia, ...
The Late Pleistocene Albano Maar hosted the most recent volcanic activity of the Colli Albani Volcanic District, represented at nearvent sections by a thick pyroclastic succession of seven units...
Marco Ballin, Mauro Scanu, Paola Vicard, Comitato Scientifico, J. Mortera, M. Barbieri, ...
- I “Working Papers ” del Dipartimento di Economia svolgono la funzione di divulgare tempestivamente, in forma definitiva o provvisoria, i risultati di ricerche scientifiche originali. La loro...
Drummond, M.F., Barbieri, M., Wong, J.B.
OBJECTIVES To compare the analytic judgments, data, and assumptions of different models used in the economic evaluation of infliximab, one of a new class of drugs for rheumatoid arthritis (RA)....
Sulphur abundance in Galactic stars (2005)
Caffau, E., Bonifacio, P., Faraggiana, R., Francois, P., Gratton, R. G., Barbieri, M.
We investigate sulphur abundance in 74 Galactic stars by using high resolution spectra obtained at ESO VLT and NTT telescopes. For the first time the abundances are derived, where possible, from...
''All-versus-nothing'' nonlocality test of quantum mechanics by two-photon hyperentanglement (2005)
Cinelli, C., Barbieri, M., Perris, R., Mataloni, P., De Martini, F.
We report the experimental realization and the characterization of polarization and momentum hyperentangled two photon states, generated by a new parametric source of correlated photon pairs. By...
Barbieri, M., Bashroush, R., Cancian, M., Donvito, G., Hermann, S., Schmidt, R., ...
3rd Internat.Schummer School on Grid Computing, Vico Equense, I, July 10-22, 2005
Barbieri, M., De Martini, F., Di Nepi, G., Mataloni, P.
We have experimentally tested the non local properties of the states generated by a high brilliance source of entanglement which virtually allows the direct measurement of the full set of photon...
Experimental realization of hyper-entangled two-photon states (2004)
Cinelli, C., Barbieri, M., De Martini, F., Mataloni, P.
We report on the the experimental realization of hyper-entangled two photon states, entangled in polarization and momentum. These states are produced by a high brilliance parametric source of...
No Planet Around HD 219542 B (2004)
Desidera, S., Gratton, R. G., Endl, M., Claudi, R. U., Cosentino, R., Barbieri, M., ...
The star HD 219542 B has been reported by us (Desidera et al. 2003) to show low-amplitude radial velocity variations that could be due to the presence of a Saturn-mass planetary companion or to...
Abundance differences between components of wide binaries (2004)
Desidera, S., Gratton, R., Scuderi, S., Claudi, R., Cosentino, R., Barbieri, M., ...
In this paper we present iron abundance analysis for 23 wide binaries with main sequence components in the temperture range 4900-6300 K, taken from the sample of the pairs currently included in the...
Di Nepi, G., De Martini, F., Barbieri, M., Mataloni, P.
A novel ultrabright parametric source of polarization entangled photon pairs with striking spatial characteristics is reported. The distribution of the output electromagnetic k-modes excited by...
Experimental Detection of Entanglement with Polarized Photons (2003)
Barbieri, M., De Martini, F., Di Nepi, G., Mataloni, P., D'Ariano, G. M., Macchiavello, C.
We report on the first experimental realization of the entanglement witness for polarization entangled photons. It represents a recently discovered significant quantum information protocol which is...
A search for planets in the metal-enriched binary HD 219542 (2003)
Desidera, S., Gratton, R. G., Endl, M., Barbieri, M., Claudi, R. U., Cosentino, R., ...
The components of the wide binary HD 219542 were recently found to differ in metallicity by about 0.1 dex (Gratton et al. A&A 377, 123). In this paper, we present the results of 2 years of high...
Barbieri, M., De Martini, F., Di Nepi, G., Mataloni, P.
Entangled pure-states, Werner-states and generalized mixed-states of any structure, spanning a 2x2 Hilbert space are created by a novel high-brilliance universal source of polarization-entangled...
FAME: Flood risk and damage assessment using modelling and earth observation techniques (2003)
WILLEMS, P, TIMBE, L, THOMPSON, S, CAMPLING, P, BARBIERI, M, TORRIANO, L, ...
PECCERILLO, A., BARBERIO, M. R., YIRGU, G., AYALEW, D., BARBIERI, M., WU, T. W.
Petrological and geochemical data are reported for basalts and silicic peralkaline rocks from the Quaternary Gedemsa volcano, northern Ethiopian rift, with the aim of discussing the petrogenesis of...
Formation of terrestrial planets in close binary systems: the case of Alpha Centauri A (2002)
Barbieri, M., Marzari, F., Scholl, H.
At present the possible existence of planets around the stars of a close binary system is still matter of debate. Can planetary bodies form in spite of the strong gravitational perturbations of the...
Galactic orbits of stars with planets (2001)
We have reconstructed the galactic orbits of the parent stars of exoplanets. For comparison, we have recalculated the galactic orbits of stars from the Edvardsson et al.(1993) catalog. A comparison...
Vietnam : renouveau et transitions (1997)
Barbieri, M., Brabant, Pierre, Darracq, S., Gubry, Patrick, Hours, Bernard, Martin, Jean-Yves, ...
Minoxidil (Mx) as a prophylaxis of doxorubicin - induced alopecia (1994)
Rodriguez, R., Machiavelli, M., Leone, B., Romero, A., Cuevas, M. A., Langhi, M., ...
Background Minoxidil (Mx) is known to induce hair growth in men with male-pattern baldness. Based on this potential, the effectiveness of Mx 2% topical solution was evaluated in cancer...
Politique de santé et population (1991)
Barbieri, M., Cantrelle, Pierre
Dans la plupart des pays, les gouvernements africains ont reconnu qu'il était de leur devoir d'assurer "le droit à la santé de chaque citoyen" dès les lendemains de l'indépendance. Des...
Cerbai, E, Barbieri, M, Mugelli, A
1. Left ventricular myocytes isolated from the heart of young (2-month-old) and old (18- to 20-month-old) spontaneously hypertensive rats (SHRs) were studied in the whole-cell configuration. Since...
Cerbai, E, Barbieri, M, Mugelli, A
1. Left ventricular myocytes isolated from the heart of young (2-month-old) and old (18- to 20-month-old) spontaneously hypertensive rats (SHRs) were studied in the whole-cell configuration. Since...
La mortalité infantile en France
Barbieri (Magali).- La mortalidad infantil en Francia Durante el siglo XX se han logrado grandes victorias en la disminución de la mortalidad infantil. El proceso se aceleró después de la Segunda...
Cerbai, E., Guerra, L., Varani, K., Barbieri, M., Borea, P. A., Mugelli, A.
1. We used electrophysiological and binding techniques to assess the presence of beta 1- and beta 2-adrenoceptors (beta 1AR and beta 2AR) in rat cardiac myocytes and to determine their ratio during...
Barbieri, M., Carbonin, P. U., Cerbai, E., Gambassi, G., Lo Giudice, P., Masini, I., ...
1. The antiarrhythmic effect of L-propionylcarnitine (L-PC) was evaluated in the guinea-pig isolated heart; arrhythmias were induced with hypoxia followed by reoxygenation and by digitalis...