Exponentially enhanced gravitationally induced entanglement between quantum systems with a two-phonon drive

• URL: http://arxiv.org/abs/2307.03657v1
• Date: Fri, 7 Jul 2023 15:23:11 GMT
• Title: Exponentially enhanced gravitationally induced entanglement between quantum systems with a two-phonon drive
• Authors: Dianzhen Cui, X. X. Yi
• Abstract summary: We propose a protocol to enhance the detection of gravitationally induced entanglement by exploiting the two-phonon drive. We consider a setup consisting of a test particle in a double-well potential, a qubit and a quantum mediator.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Finding a feasible protocol for probing the quantum nature of gravity has been attracting an increasing amount of attention. In this manuscript, we propose a protocol to enhance the detection of gravitationally induced entanglement by exploiting the two-phonon drive in a hybrid quantum setup. We consider the setup consisting of a test particle in a double-well potential, a qubit and a quantum mediator. There is gravitational interaction between the test particle and the mediator, and a spin-phonon coupling between the mediator and the qubit. By introducing a two-phonon drive, the entanglement between the TP and the qubit are significantly enhanced and the entanglement generation rate is remarkably increased compared with the case without the two-phonon drive. Moreover, the entanglement between the TP and the qubit can be partially preserved in the presence of dephasing by the proposed strategy. This work would open a different avenue for experimental detection of the quantum nature of gravity, which could find applications in quantum information science.

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