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- Title
Entanglement and steering in a cross-shaped double-cavity with a magnetic sphere and driven by a squeezed vacuum field.
- Authors
Zhao, Ruiqing; Jia, Jinhao; Wu, Lixiong; Zhang, Mei
- Abstract
We have explored steady-state entanglement and steering in a cross-shaped double-cavity with a levitating magnetic sphere and driven by a squeezed vacuum field. From the equations of motion of the system, we derived the linearized Lyapunov equation for the steady-states, introduced the logarithmic negativity to measure the entanglement and a similar quantity to measure the steering, and conducted calculations in parameter regions around stable steady-states. Numerical results show that steady-state entanglement and steering between various components of the system, such as cavity-cavity, cavity-magnon, and cavity-phonon, can form by choosing experimentally feasible detunings, dissipation rates, and coupling rates. Moreover, one-way steering can be achieved through appropriately adjusting the system parameters. The proposed model provides a platform for the study of the entanglement and one-way steering, and may find itself applications in quantum information processing and quantum cryptography.
- Subjects
QUANTUM information science; QUANTUM cryptography; EQUATIONS of motion; SPHERES; BEAM steering; QUANTUM entanglement
- Publication
Optical & Quantum Electronics, 2024, Vol 56, Issue 6, p1
- ISSN
0306-8919
- Publication type
Article
- DOI
10.1007/s11082-024-06859-w