Exponentially enhanced gravitationally induced entanglement between quantum systems with a two-phonon drive
arXiv:2307.03657 · doi:10.1103/PhysRevA.108.023502
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.
11 pages, 6 figures, accepted for publication in Phys. Rev. A
References in corpus (17)
- A Spin Entanglement Witness for Quantum Gravity
- Gravitationally-induced entanglement between two massive particles is sufficient evidence of quantum effects in gravity
- Motional Quantum Ground State of a Levitated Nanoparticle from Room Temperature
- Suppressing Charge Noise Decoherence in Superconducting Charge Qubits
- Casimir forces between arbitrary compact objects
- Extending Quantum Coherence in Diamond
- Tin-Vacancy Quantum Emitters in Diamond
- Dynamical Decoupling of a single electron spin at room temperature
- Precision measurement of charge number with optomechanically induced transparency
- Universality of Uhrig dynamical decoupling for suppressing qubit pure dephasing and relaxation
- Topical Review: Spins and mechanics in diamond
- Ion trap transducers for quantum electromechanical oscillators
- Controlling the net charge on a nanoparticle optically levitated in vacuum
- Nanomechanical squeezing with detection via a microwave cavity
- Entanglement Dynamics in a Dispersively Coupled Qubit-Oscillator System
- Using squeezed field to preserve two-atom entanglement against spontaneous emissions
- Path-entangling evolution and quantum gravitational interaction