Improving photon blockade, entanglement and mechanical-cat-state generation in a generalized cross-Kerr optomechanical circuit
arXiv:2310.02443 · doi:10.1103/PhysRevA.108.063505
Abstract
We propose a feasible experimental scheme to improve the few-photon optomechanical effects, including photon blockade and mechanical-Schrodinger cat-state generation, as well as photon-phonon entanglement in a tripartite microwave optomechanical circuit. The system under consideration is formed by a single-Cooper-pair transistor, a microwave LC resonator, and a micromechanical resonator. Our scheme is based on an additional higher-order (generalized) nonlinear cross-Kerr type of coupling, linearly dependent on photon number while quadratically dependent on mechanical phonon one, which can be realized via adjusting the gate charge of the Cooper-pair transistor. We show, both analytically and numerically, that the presence of both cross-Kerr and generalized cross-Kerr nonlinearities not only may give rise to the enhancement of one- and two-photon blockades as well as photon induced tunneling but can also provide more controllability over them. Furthermore, it is shown that in the regime of zero optomechanical coupling, with the aid of generalized cross-Kerr nonlinearity, one can generate multi-components mechanical superposition states which exhibit robustness against system dissipations. We also study the steady-state entanglement between the microwave and mechanical modes, the results of which signify the role of generalized cross-Kerr nonlinearity in enhancing the entanglement in the regime of large-red detuning. The proposed generalized cross-Kerr optomechanical system can be found potential applications in microwave quantum sensing, quantum telecommunication, and quantum information protocols.
References in corpus (17)
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- Optomechanically induced transparency
- Optomechanical entanglement between a movable mirror and a cavity field
- A Mechanical Mass Sensor with Yoctogram Resolution
- Observation of strong coupling between a micromechanical resonator and an optical cavity field
- Resolved Sideband Cooling of a Micromechanical Oscillator
- Large Quantum Superpositions and Interference of Massive Nanometer-Sized Objects
- State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
- Single artificial-atom lasing
- Single-photon nonlinearities in two-mode optomechanics
- Photon-induced tunneling in optomechanical systems
- Enhancement of few-photon optomechanical effects with cross-Kerr nonlinearity
- Cross-Kerr nonlinearity in optomechanical systems
- Quantum correlations in optomechanical crystals
- Ultra-precision quantum sensing and measurement based on nonlinear hybrid optomechanical systems containing ultracold atoms or atomic Bose-Einstein condensate
- Multimode cold-damping optomechanics with delayed feedback
- Proposal for optomechanical quantum teleportation