Related papers: Nonreciprocal tripartite entanglement and asymmetric Einstein-Podolsky-Rosen steering via directional quantum squeezing

Nonreciprocal tripartite entanglement and asymmetric Einstein-Podolsky-Rosen steering via directional quantum squeezing

URL: http://arxiv.org/abs/2409.06133v1
Date: Tue, 10 Sep 2024 01:01:10 GMT
Title: Nonreciprocal tripartite entanglement and asymmetric Einstein-Podolsky-Rosen steering via directional quantum squeezing
Authors: Ya-Feng Jiao, Jie Wang, Dong-Yang Wang, Lei Tang, Yan Wang, Yun-Lan Zuo, Wan-Su Bao, Le-Man Kuang, Hui Jing,
Abstract summary: We report a theoretical method using directional injection of quantum squeezing to produce nonreciprocal multipartite entanglement and EPR steering in a three-mode optomechanical system. Findings may have potential applications in the area of quantum information processing such as quantum secure direct communication and one-way quantum computing.
Score: 5.813102743776709
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The generation and manipulation of multipartite entanglement and EPR steering in macroscopic systems not only play a fundamental role in exploring the nature of quantum mechanics, but are also at the core of current developments of various nascent quantum technologies. Here we report a theoretical method using directional injection of quantum squeezing to produce nonreciprocal multipartite entanglement and EPR steering in a three-mode optomechanical system with closed-loop coupling. We show that by directionally applying a two-photon parametric driving field with a phase-matched squeezed vacuum reservoir to an optomechanical resonator, a squeezed optical mode can be introduced for one of its input directions, thereby yielding an asymmetric enhancement of optomechanical interaction and the time-reversal symmetry breaking of the system. Based on this feature, it is found that bipartite and tripartite entanglement and the associated EPR steering of the subsystems can only be generated when the coherent driving field input from the squeezing injection direction, namely, achieving nonreciprocity in such quantum correlations. More excitingly, it is also found that by properly adjusting the squeezing parameter, the overall asymmetry of EPR steering can be stepwise driven from no-way regime, one-way regime to two-way regime. These findings, holding promise for preparing rich types of entangled quantum resources with nonreciprocal correlations, may have potential applications in the area of quantum information processing such as quantum secure direct communication and one-way quantum computing.

Related papers

Nonlinear dynamical Casimir effect and Unruh entanglement in waveguide QED with parametrically modulated coupling [83.88591755871734]
We study theoretically an array of two-level qubits moving relative to a one-dimensional waveguide. When the frequency of this motion approaches twice the qubit resonance frequency, it induces parametric generation of photons and excitation of the qubits. We develop a comprehensive general theoretical framework that incorporates both perturbative diagrammatic techniques and a rigorous master-equation approach.
arXiv Detail & Related papers (2024-08-30T15:54:33Z)
Asymmetric EPR Steering in a Cavity-Magnon System Generated by a Squeezed Vacuum Field and an Optical Parametric Amplifier [0.0]
We investigate a cavity-magnon system with two magnon modes coupled to a common cavity microwave field. We show that enhancing the OPA gain and the squeezing parameter significantly enhances the quantum entanglement and the Einstein-Podolsky-Rosen steering.
arXiv Detail & Related papers (2024-08-10T21:39:49Z)
Crossing exceptional points in non-Hermitian quantum systems [41.94295877935867]
We reveal the behavior of two-photon quantum states in non-Hermitian systems across the exceptional point. We demonstrate a switching in the quantum interference of photons directly at the exceptional point.
arXiv Detail & Related papers (2024-07-17T14:04:00Z)
Nonreciprocal Superradiant Phase Transitions and Multicriticality in a Cavity QED System [4.647630244371672]
We show nonreciprocal superradiant phase transitions and novel multicriticality in a cavity quantum electrodynamics system. Results open a new door for all-optical manipulation of superradiant transitions and multicritical behaviors in light-matter systems.
arXiv Detail & Related papers (2024-05-22T13:15:07Z)
Quantum squeezing induced quantum entanglement and EPR steering in coupled optomechanical system [3.281025673103092]
We propose a theoretical project in which quantum squeezing induces quantum entanglement and Einstein-Podolsky-Rosen steering in a coupled whispering-gallery-mode optomechanical system. Our project does not need an extraordinarily squeezed field, and it is convenient to manipulate and provides a novel and flexible avenue for diverse applications in quantum technology.
arXiv Detail & Related papers (2023-12-19T16:30:44Z)
Tripartite quantum entanglement with squeezed optomechanics [3.1938039621723724]
We propose how to achieve coherent manipulation and enhancement of quantum entanglement in a hybrid optomechanical system. The advantages of this system are twofold: (i) one can effectively regulate the light-mirror interactions by introducing a squeezed intracavity mode via the OPA; (ii) when properly matching the squeezing parameters between the squeezed cavity mode and the injected squeezed vacuum reservoir, the optical input noises can be suppressed completely.
arXiv Detail & Related papers (2023-11-20T02:00:17Z)
Interaction of quantum systems with single pulses of quantized radiation [68.8204255655161]
We describe the interaction of a propagating pulse of quantum radiation with a localized quantum system. By transformation to an appropriate picture, we identify the usual Jaynes-Cummings Hamiltonian between the scatterer and a superposition of the initial and final mode. The transformed master equation offers important insights into the system dynamics and it permits numerically efficient solutions.
arXiv Detail & Related papers (2022-03-14T20:23:23Z)
Three-fold way of entanglement dynamics in monitored quantum circuits [68.8204255655161]
We investigate the measurement-induced entanglement transition in quantum circuits built upon Dyson's three circular ensembles. We obtain insights into the interplay between the local entanglement generation by the gates and the entanglement reduction by the measurements.
arXiv Detail & Related papers (2022-01-28T17:21:15Z)
Perfect Transfer of enhanced entanglement and asymmetric steering in a cavity magnomechanical system [3.768959414280956]
We propose a hybrid cavity magnomechanical system to transfer the bipartite entanglements and Einstein-Podolsky-Rosen steerings between magnons, photons, and phonons. This work may provide a potential platform for distant and asymmetric quantum modulation.
arXiv Detail & Related papers (2020-11-27T01:19:08Z)
Quantum Non-equilibrium Many-Body Spin-Photon Systems [91.3755431537592]
dissertation concerns the quantum dynamics of strongly-correlated quantum systems in out-of-equilibrium states. Our main results can be summarized in three parts: Signature of Critical Dynamics, Driven Dicke Model as a Test-bed of Ultra-Strong Coupling, and Beyond the Kibble-Zurek Mechanism.
arXiv Detail & Related papers (2020-07-23T19:05:56Z)
Waveguide quantum optomechanics: parity-time phase transitions in ultrastrong coupling regime [125.99533416395765]
We show that the simplest set-up of two qubits, harmonically trapped over an optical waveguide, enables the ultrastrong coupling regime of the quantum optomechanical interaction. The combination of the inherent open nature of the system and the strong optomechanical coupling leads to emerging parity-time (PT) symmetry. The $mathcalPT$ phase transition drives long-living subradiant states, observable in the state-of-the-art waveguide QED setups.
arXiv Detail & Related papers (2020-07-04T11:02:20Z)

This list is automatically generated from the titles and abstracts of the papers in this site.