102 citations · 520 across the 28 of their papers we have counts for
28 papers
An input-output approach for giant atom scatterings beyond the dipole approximation
S. R. He, S. N. Wang, Y. L. Zhang +2
A giant atom is an artificial matter configuration whose spatial scale is comparable to the wavelength of the interacting electromagnetic wave, such that the usual electric-dipole…
A broadband single microwave-photon detector insensitive to the thermal noise
Y. Q. Chai, M. Y. Wang, S. N. Wang +2
Thermal noise is one of the physical obstacles that constrain the achievable detection sensitivities of various detectors. Indeed, as we showed in a recent paper (PRB 111, 024501 (…
Measuring weak microwave signals via current-biased Josephson Junctions II: Arriving at single-photon detection sensitivity
Y. Q. Chai, M. Y. Wang, S. N. Wang +2
It is well known that the current-biased Josephson junction (CBJJ) can serve as a Josephson threshold detector (JTD) for the sensitive detection of weak microwave signals. Based on…
Sub-SQL electronic field sensing by simultaneously using quantum entanglements and squeezings
X. N. Feng, M. Zhang, L. F. Wei
Quantum entanglement and quantum squeezing are two most typical approaches to beat the standard quantum limit (SQL) of the sensitive phase estimations in quantum metrology. Each of…
Experimental evidences of a current-biased Josephson junction device can be worked as a macroscopic "Boson" or "Fermion" and the combination
P. H. Ouyang, S. R. He, Y. Z. Wang +4
According to the statistical distribution laws, all the elementary particles in the real 3+1-dimensional world must and only be chosen as either bosons or fermions, without excepti…
Robust phase metrology with hybrid quantum interferometers against particle losses
X. N. Feng, D. He, L. F. Wei
Entanglement is an important quantum resource to achieve high sensitive quantum metrology. However, the rapid decoherence of quantum entangled states, due to the unavoidable enviro…
Searching for high-frequency gravitational waves by ground high field magnetic resonant sweepings
H. Zheng, L. F. Wei, H. Wen +1
With laser interferometers, LIGO-Virgo collaboration has recently realized the direct detections of the intermediate-frequency (i.e., from dozens to hundreds of Hertz) gravitationa…
Spin-parity effect in violation of bell's inequalities for entangled states of parallel polarization
Haifeng Zhang, Jianhua Wang, Zhigang Song +2
Bell inequalities (BIs) derived in terms of quantum probability statistics are extended to general bipartite-entangled states of arbitrary spins with parallel polarization. The ori…
Deterministic generations of NOON states via shortcuts to adiabaticity
Jingwei Chen, L. F. Wei
NOON states play the important roles in quantum information processings and quantum metrology, but the fidelities of these states generated previously are limited typically by the…
Phase-dependent optical response properties in an optomechanical system by coherently driving the mechanical resonator
W. Z. Jia, L. F. Wei, Yong Li +1
We explore theoretically the optical response properties in an optomechanical system under electromagneti- cally induced transparency condition but with the mechanical resonator be…
High-efficiency single-photon Fock state production by transitionless quantum driving
X. Shi, L. F. Wei
Single photon source is one of the key devices for optical quantum information processing. Differing from the usual stimulated Raman adiabatic passage to obtain single-photon radia…
Spin-orbit couplings between distant electrons trapped individually on liquid helium
Miao Zhang, L. F. Wei
We propose an approach to entangle spins of electrons floating on liquid helium by coherently manipulating their spin-orbit interactions. The configuration consists of single elect…
Dissipative dynamics of few-photons superposition states: A dynamical invariant
Hong-Yan Wen, Jing Cheng, Y. Yang +1
By numerically calculating the time-evolved Wigner functions, we investigate the dynamics of a few-photon superposed (e.g., up to two ones) state in a dissipating cavity. It is sho…
Probing molecular chirality by coherent optical absorption spectra
W. Z. Jia, L. F. Wei
We propose an approach to sensitively probe the chirality of molecules by measuring their coherent optical absorption spectra. It is shown that quantum dynamics of the cyclic three…
Testing tripartite Mermin inequalities by spectral joint-measurements of qubits
J. S. Huang, C. H. Oh, L. F. Wei
It is well known that Bell inequality supporting the local realism can be violated in quantum mechanics. Numerous tests of such a violation have been demonstrated with bipartite en…
Quantum computation with moving quantum dots generated by surface acoustic waves
X. Shi, M. Zhang, L. F. Wei
Motivated by the recent experimental observations [M. Kataoka et al., Phys. Rev. Lett. {\bf102}, 156801 (2009)], we propose here an theoretical approach to implement quantum comput…
Tunable one-dimensional microwave emissions from cyclic-transition three-level atoms
W. Z. Jia, L. F. Wei, Z. D. Wang
By strongly driving a cyclic-transition three-level artificial atom, demonstrated by such as a flux-based superconducting circuit, we show that coherent microwave signals can be ex…
High efficiency tomographic reconstruction of quantum states by quantum nondemolition measurements
J. S. Huang, L. F. Wei, C. H. Oh
We propose a high efficiency tomographic scheme to reconstruct an unknown quantum state of the qubits by using a series of quantum nondemolition (QND) measurements. The proposed QN…
Vacuum induced Berry phases in single-mode Jaynes-Cummings models
Yu Liu, L. F. Wei, W. Z. Jia +1
Motivated by the work [Phys. Rev. Lett. 89, 220404 (2002)] for detecting the vacuum-induced Berry phases with two-mode Jaynes-Cummings models (JCMs), we show here that, for a param…
Distinguishing left- and right-handed molecules by two-step coherent pulses
W. Z. Jia, L. F. Wei
Chiral molecules with broken parity symmetries can be modeled as quantum systems with cyclic-transition structures. By using these novel properties, we design two-step laser pulses…
Quantum state engineering with flux-biased Josephson phase qubits by Stark-chirped rapid adiabatic passages
W. Nie, J. S. Huang, X. Shi +1
In this paper, the scheme of quantum computing based on Stark chirped rapid adiabatic passage (SCRAP) technique [L. F. Wei et al., Phys. Rev. Lett. 100, 113601 (2008)] is extensive…
Jaynes-Cummings Models with trapped electrons on liquid Helium
Miao Zhang, H. Y. Jia, L. F. Wei
Jaynes-Cummings model is a typical model in quantum optics and has been realized with various physical systems (e.g, cavity QED, trapped ions, and circuit QED etc..) of two-level a…
Simplified approach to generate controlled-NOT gates with single trapped ions for arbitrary Lamb-Dicke parameters
Miao Zhang, H. Y. Jia, L. F. Wei
For certain {\it specific} (or {\it"magic"}) Lamb-Dicke (LD) parameters, Monroe {\it et al} showed [Phys. Rev. {\bf A 55}, R2489 (1997)] that a two-qubit quantum operation, between…
Superconducting qubits can be coupled and addressed as trapped ions
Yu-xi Liu, L. F. Wei, J. R. Johansson +2
Exploiting the intrinsic nonlinearity of superconducting Josephson junctions, we propose a scalable circuit with superconducting qubits (SCQs) which is very similar to the successf…