167 citations · 1.8k across the 71 of their papers we have counts for
16 papers · 1 filter
Optimal model for fewer-qubit CNOT gates with Rydberg atoms
Rui Li, Shurui Li, Dongmin Yu +2
Fewer-qubit quantum logic gate, serving as a basic unit for constructing universal multiqubit gates, has been widely applied in quantum computing and quantum information. However,…
Quantum metrology with Bloch Oscillations in Floquet phase space
Keye Zhang, Weijie Liang, Pierre Meystre +1
Quantum particles performing Bloch oscillations in a spatially periodic potential can be used as a very accurate detector of constant forces. We find that the similar oscillations…
Quantum Non-demolition Measurements in the Relativistic Dirac Oscillator
Wei Sun, Keye Zhang, Pierre Meystre +1
We investigate the feasibility of performing quantum non-demolition (QND) measurements in relativistic quantum systems, using the one-dimensional Dirac oscillator as a specific exa…
Spheroidal-structure-based multi-qubit Toffoli gate via asymmetric Rydberg interaction
Dongmin Yu, Weiping Zhang, Jin-ming Liu +2
We propose an exotic multi-qubit Toffoli gate protocol via asymmetric Rydberg blockade, benefiting from the use of a spheroidal configuration to optimize the gate performance. The…
Relativistic Measurement Backaction in the Quantum Dirac Oscillator
Keye Zhang, Lu Zhou, Pierre Meystre +1
An elegant method to circumvent quantum measurement backaction is the use of quantum mechanics free subsystems (QMFS), with one approach involving the use of two oscillators with e…
Frozen condition of quantum coherence for atoms on a stationary trajectory
Anwei Zhang
We consider two co-moving atoms on a stationary trajectory and develop a formalism to characterize the properties of such atoms. We give a criterion under which quantum coherence (…
Quantum optomechanical straight-twin engine
Keye Zhang, Weiping Zhang
We propose a realization of a quantum heat engine in a hybrid microwave-optomechanical system that is the analog of a classical straight-twin engine. It exploits a pair of polarito…
One qubit and one photon -- the simplest polaritonic heat engine
Qiao Song, Swati Singh, Keye Zhang +2
Hybrid quantum systems can often be described in terms of polaritons. These are quasiparticles formed of superpositions of their constituents, with relative weights depending on so…
Proposal for an Optomechanical Microwave Sensor at the Subphoton Level
Keye Zhang, Francesco Bariani, Ying Dong +2
Because of their low energy content, microwave signals at the single-photon level are extremely challenging to measure. Guided by recent progress in single-photon optomechanics and…
Stability, Adiabaticity and Transfer efficiency in a nonlinear Λ-system
Ning Jia, Jing Qian, Guangjiong Dong +1
We investigate the relationship between stability, adiabaticity and transfer efficiency in a Λ-type atom-molecule coupling system via a nonlinear stimulated Raman adiabatic passage…
Measurement back-action on the quantum spin-mixing dynamics of a spin-1 Bose-Einstein condensate
Keye Zhang, Lu Zhou, Hong Y. Ling +2
We consider a small F=1 spinor condensate inside an optical cavity driven by an optical probe field, and subject the output of the probe to a homodyne detection, with the goal of i…
Laser-catalyzed spin-exchange process in a Bose-Einstein condensate
H. Jing, Y. Jiang, Weiping Zhang +1
We show theoretically that it is possible to optically control collective spin-exchange processes in spinor Bose condensates through virtual photoassociation. The interplay between…
Quantum Control of Light through an Atom-Molecule Dark State
Hui Jing, Yuangang Deng, Weiping Zhang
We propose to use a quantized version of coherent two-color photoassociation to realize a hybrid device for quantum control of light. The dynamical features of this system are exhi…
Goos-Hänchen-Like Shifts in Atom Optics
Jianhua Huang, Zhenglu Duan, Hong Y. Ling +1
We consider the propagation of a matter wavepacket of two-level atoms through a square potential created by a super-Gaussian laser beam. We explore the matter wave analog of Goos-H…
Properties of a coupled two species atom-heteronuclear molecule condensate
Lu Zhou, Weiping Zhang, Hong Y. Ling +2
We study the coherent association of a two-species atomic condensate into a condensate of heteronuclear diatomic molecules, using both a semiclassical treatment and a quantum mecha…
Adiabatic Condition for Nonlinear Systems
Han Pu, Peter Maenner, Weiping Zhang +1
We revisit the adiabatic criterion in stimulated Raman adiabatic passage for the three-level -system, and compare the situation with and without nonlinearity. In linear systems,…