281 citations · 1.8k across the 46 of their papers we have counts for
32 papers · 1 filter
Enhanced weak-field sensing using detuned squeezing
Li-Wen Zhang, Yang Liu, Han-Jie Zhu +1
Achieving measurement precision beyond the standard quantum limit (SQL) is a fundamental object in quantum metrology. In this manuscript, we propose a streamlined protocol for weak…
Heralded nonlocal quantum gates for distributed quantum computation in a decoherence-free subspace
Wanhua Su, Wei Qin, Adam Miranowicz +2
We propose a heralded protocol for implementing nontrivial quantum gates on two stationary qubits coupled to spatially separated cavities. By dynamically controlling the evolution…
Proposal of ensemble qubits with two-atom decay
Wei Qin, Adam Miranowicz, Franco Nori
We propose and analyze a novel approach to implement ensemble qubits. The required anharmonicity is provided by a simultaneous decay of two atoms (i.e., two-atom decay), which is a…
-photon blockade with an -photon parametric drive
Yan-Hui Zhou, Fabrizio Minganti, Wei Qin +5
We propose a mechanism to engineer an -photon blockade in a nonlinear cavity with an -photon parametric drive . When an -photon-excitation reson…
Generation of spin squeezing via a fully quantum degenerate parametric amplifier
Yang Liu, Jie Song, Wei Qin +2
Spin squeezing is one of the most attractive methods for realizing high-precision metrology. In this paper, we propose a protocol for generating spin squeezing in an atomic ensembl…
Sudden change of the photon output field marks phase transitions in the quantum Rabi model
Ye-Hong Chen, Yuan Qiu, Adam Miranowicz +6
The experimental observation of quantum phase transitions predicted by the quantum Rabi model in quantum critical systems is usually challenging due to the lack of signature experi…
Optomechanical Schrödinger cat states in a cavity Bose-Einstein condensate
Baijun Li, Wei Qin, Ya-Feng Jiao +4
Schrödinger cat states, consisting of superpositions of macroscopically distinct states, provide key resources for a large number of emerging quantum technologies in quantum inform…
Beating the 3 dB Limit for Intracavity Squeezing and Its Application to Nondemolition Qubit Readout
Wei Qin, Adam Miranowicz, Franco Nori
While the squeezing of a propagating field can, in principle, be made arbitrarily strong, the cavity-field squeezing is subject to the well-known 3 dB limit, and thus has limited a…
Enhancing dissipative cat-state generation via nonequilibrium pump fields
Zheng-Yang Zhou, Clemens Gneiting, Wei Qin +2
Cat states, which were initially proposed to manifest macroscopic superpositions, play an outstanding role in fundamental aspects of quantum dynamics. In addition, they have potent…
Significant enhancement in refrigeration and entanglement in auxiliary-cavity-assisted optomechanical systems
Deng-Gao Lai, Wei Qin, Bang-Pin Hou +2
We propose how to achieve significantly enhanced quantum refrigeration and entanglement by coupling a pumped auxiliary cavity to an optomechanical cavity. We obtain both analytical…
Fault-tolerant multiqubit geometric entangling gates using photonic cat-state qubits
Ye-Hong Chen, Roberto Stassi, Wei Qin +2
We propose a theoretical protocol to implement multiqubit geometric gates (i.e., the Mølmer-Sørensen gate) using photonic cat-state qubits. These cat-state qubits stored in high-$Q…
Generating Large Cats with Nine Lives: Long-Lived Macroscopically Distinct Superposition States in Atomic Ensembles
Wei Qin, Adam Miranowicz, Hui Jing +1
We propose to create and stabilize long-lived macroscopic quantum superposition states in atomic ensembles. We show that using a fully quantum parametric amplifier can cause the si…
Fast binomial-code holonomic quantum computation with ultrastrong light-matter coupling
Ye-Hong Chen, Wei Qin, Roberto Stassi +2
We propose a protocol for bosonic binomial-code nonadiabatic holonomic quantum computation in a system composed of an artificial atom ultrastrongly coupled to a cavity resonator. I…
Two-level systems with periodic -step driving fields: Exact dynamics and quantum state manipulations
Zhi-Cheng Shi, Ye-Hong Chen, Wei Qin +4
In this work, we derive exact solutions of a dynamical equation, which can represent all two-level Hermitian systems driven by periodic -step driving fields. For different physi…
Tunable optomechanically induced transparency by controlling the dark-mode effect
Deng-Gao Lai, Xin Wang, Wei Qin +3
We study tunable optomechanically induced transparency by controlling the dark-mode effect induced by two mechanical modes coupled to a common cavity field. This is realized by int…
Shortcuts to Adiabaticity for the Quantum Rabi Model: Efficient Generation of Giant Entangled cat States via Parametric Amplification
Ye-Hong Chen, Wei Qin, Xin Wang +2
We propose a method for the fast generation of nonclassical ground states of the Rabi model in the ultrastrong and deep-strong coupling regimes via the shortcuts-to-adiabatic (STA)…
Strong Spin Squeezing Induced by Weak Squeezing of Light inside a Cavity
Wei Qin, Ye-Hong Chen, Xin Wang +2
We propose a simple method for generating spin squeezing of atomic ensembles in a Floquet cavity subject to a weak, detuned two-photon driving. We demonstrate that {\it the weak sq…
Unconventional Cavity Optomechanics: Nonlinear Control of Phonons in the Acoustic Quantum Vacuum
Xin Wang, Wei Qin, Adam Miranowicz +2
We study unconventional cavity optomechanics and the acoustic analogue of radiation pressure to show the possibility of nonlinear coherent control of phonons in the acoustic quantu…
Emission of photon pairs by mechanical stimulation of the squeezed vacuum
Wei Qin, Vincenzo Macrì, Adam Miranowicz +2
To observe the dynamical Casimir effect (DCE) induced by a moving mirror is a long-standing challenge because the mirror velocity needs to approach the speed of light. Here, we pre…
Fast and high-fidelity generation of steady-state entanglement using pulse modulation and parametric amplification
Ye-Hong Chen, Wei Qin, Franco Nori
We explore an intriguing alternative for a fast and high-fidelity generation of steady-state entanglement. By exponentially enhancing the atom-cavity interaction, we obtain an expo…
Proposal to Test Quantum Wave-Particle Superposition on Massive Mechanical Resonators
Wei Qin, Adam Miranowicz, Guilu Long +2
We present and analyze a proposal for a macroscopic quantum delayed-choice experiment with massive mechanical resonators. In our approach, the electronic spin of a single nitrogen-…
Exponentially-Enhanced Light-Matter Interaction, Cooperativities, and Steady-State Entanglement Using Parametric Amplification
Wei Qin, Adam Miranowicz, Peng-Bo Li +3
We propose an experimentally feasible method for enhancing the atom-field coupling as well as the ratio between this coupling and dissipation (i.e., cooperativity) of two atoms in…
Towards quantum entanglement of micromirrors via a two-level atom and radiation pressure
Zhi-Rong Zhong, Xin Wang, Wei Qin +3
We propose a method to entangle two distant vibrating microsize mirrors (i.e., mechanical oscillators) in a cavity optomechanical system. In this scheme, we discuss both the resona…
Heralded quantum controlled phase gates with dissipative dynamics in macroscopically-distant resonators
Wei Qin, Xin Wang, Adam Miranowicz +2
Heralded near-deterministic multi-qubit controlled phase gates with integrated error detection have recently been proposed by Borregaard et al. [Phys. Rev. Lett. 114, 110502 (2015)…