Predicted emergent spin physics in an ultrathin film of topological insulator (2009)
Lu, Hai-Zhou, Shan, Wen-Yu, Yao, Wang, Niu, Qian, Shen, Shun-Qing
We study transport and optical properties of the surface states which lie in the bulk energy gap of a thin-film topological insulator. When the film thickness is comparable with the surface state...
`Measurement-free' quantum feedback control of nuclear field squeezing in quantum dot (2009)
In the coupled electron-nuclear spin dynamics, the nuclear hyperfine field can perturb the spin orientation of the electron eigenstates in a moderate external field, which in turn determines the...
Wolf Mike, Wang Yao, Freiberg Alexander, Aguilar Hector, Holbrook Michael, Lee Benhur
Abstract Nipah virus (NiV) and Hendra virus (HeV) are the only paramyxoviruses requiring Biosafety Level 4 (BSL-4) containment. Thus, study of henipavirus entry at less than BSL-4 conditions...
Analysis of Multi-Hop Traffic Grooming in WDM Mesh Networks (2008)
Wang Yao, Gokhan Sahin, Mengke Li, Byrav Ramamurthy
Abstract — Traffic grooming is an essential functionality of WDM optical networks to provision multi-granularity subwavelength connections. Depending on the number of lightpaths allowed in a...
Edge states in Graphene: from gapped flat band to gapless chiral modes (2008)
Yao, Wang, Yang, Shengyuan A., Niu, Qian
We study edge-states in graphene systems where a bulk energy gap is opened by inversion symmetry breaking. We find that the edge-bands dispersion can be controlled by potentials applied on the...
Wang Yao, Mengke Li, Byrav Ramamurthy
Abstract: A sparse grooming network (SGN) is a cost-effective solution to provision multigranularity sub-wavelength connections with stringent budget constraints. We address the design of SGNs by...
Berry Phase Effect on Exciton Transport and Bose Einstein Condensate (2008)
With exciton lifetime much extended in semiconductor quantum-well structures, their transport and Bose-Einstein condensation become a focus of research in recent years. We reveal a momentum-space...
Valley contrasting physics in graphene: magnetic moment and topological transport (2007)
Xiao, Di, Yao, Wang, Niu, Qian
We investigate physical properties that can be used to distinguish the valley degree of freedom in systems where inversion symmetry is broken, using graphene systems as examples. We show that the...
Cheng, Jun, Yao, Wang, Xu, Xiaodong, Steel, D. G., Bracker, A. S., Gammon, D., ...
High-resolution spectral hole burning (SHB) in coherent nondegenerate differential transmission spectroscopy discloses spin-trion dynamics in an ensemble of negatively charged quantum dots. In the...
Liu, Ren-Bao, Yao, Wang, Sham, L. J.
Control of electron spin decoherence in contact with a mesoscopic bath of many interacting nuclear spins in an InAs quantum dot is studied by solving the coupled quantum dynamics. The nuclear spin...
Valley Dependent Optoelectronics from Inversion Symmetry Breaking (2007)
Yao, Wang, Xiao, Di, Niu, Qian
Inversion symmetry breaking allows contrasted circular dichroism in different k-space regions, which takes the extreme form of optical selection rules for interband transitions at high symmetry...
Optically manipulating spins in semiconductor quantum dots (2007)
Liu, Ren-Bao, Yao, Wang, Sham, L. J.
Physics considered here is the active control of a quantum system and of its decoherence by its environment. The relevance is in the quantum nature of nanoscience and how coherent optics in...
Liu, Ren-Bao, Yao, Wang, Sham, L. J.
Control of electron spin decoherence in contact with a mesoscopic bath of many interacting nuclear spins in an InAs quantum dot is studied by solving the coupled quantum dynamics. The nuclear spin...
Optical Control of Topological Quantum Transport in Semiconductors (2007)
Yao, Wang, MacDonald, A. H., Niu, Qian
Intense coherent laser radiation red-detuned from absorption edge can reactively activate sizable Hall type charge and spin transport in n-doped paramagnetic semiconductors as a consequence of...
Single Electron Spin Decoherence by Nuclear Spin Bath: Linked Cluster Expansion Approach (2006)
Saikin, S. K., Yao, Wang, Sham, L. J.
We develop a theoretical model for transverse dynamics of a single electron spin interacting with a nuclear spin bath. The approach allows a simple diagrammatic representation and analytical...
Restoring Coherence Lost to a Slow Interacting Mesoscopic Bath (2006)
Yao, Wang, Liu, Ren-Bao, Sham, L. J.
For a two-state quantum object interacting with a slow mesoscopic interacting spin bath, we show that a many-body solution of the bath dynamics conditioned on the quantum-object state leads to an...
Theory of electron spin decoherence by interacting nuclear spins in a quantum dot (2005)
Yao, Wang, Liu, Ren-Bao, Sham, L. J.
We present a quantum solution to the electron spin decoherence by a nuclear pair-correlation method for the electron-nuclear spin dynamics under a strong magnetic field and a temperature high for the...
Traffic grooming in next-generation optical WDM mesh networks (2005)
The backbone of the current Internet is built on the long-haul and metro telecommunication networks, which are essentially first-generation optical networks. The first-generation optical networks use...
Traffic grooming in next-generation optical WDM mesh networks / (2005)
Thesis (Ph.D.)--University of Nebraska--Lincoln, 2005.
Survivable traffic grooming with path protection at the connection level in WDM mesh networks (2005)
Wang Yao, Student Member, Byrav Ramamurthy
Abstract—Survivable traffic grooming (STG) is a promising approach to provide reliable and resource-efficient multigranularity connection services in wavelength-division-multiplexing (WDM) optical...
Wang Yao, Student Member, Byrav Ramamurthy
Abstract—This paper addresses the two-layer dynamic traffic grooming problem in wavelength-division-multiplexed (WDM) mesh optical networks subject to resource constraints and the generalized...
Performance Analysis of Sparse Traffic Grooming (2005)
Wang Yao, Mengke Li, Byrav Ramamurthy
Abstract—Sparse traffic grooming is a practical problem to be addressed in heterogeneous multi-vendor optical WDM networks where only some of the optical cross-connects (OXCs) have grooming...
Liu, Ren-Bao, Yao, Wang, Sham, L. J.
Ultrafast initialization enables fault-tolerant processing of quantum information while QND readout enables scalable quantum computation. By spatially assembling photon resonators and wave-guides...
Theory of control of spin/photon interface for quantum networks (2004)
Yao, Wang, Liu, Ren-Bao, Sham, L. J.
A cavity coupling a charged nanodot and a fiber can act as a quantum interface, through which a stationary spin qubit and a flying photon qubit can be inter-converted via cavity-assisted Raman...
Nanodot-Cavity Electrodynamics and Photon Entanglement (2003)
Yao, Wang, Liu, Renbao, Sham, L. J.
Quantum electrodynamics of excitons in a cavity is shown to be relevant to quantum operations. We present a theory of an integrable solid-state quantum controlled-phase gate for generating...