Digital quantum simulation of quantum gravitational entanglement with IBM quantum computers

• URL: http://arxiv.org/abs/2302.04006v1
• Date: Wed, 8 Feb 2023 11:42:38 GMT
• Title: Digital quantum simulation of quantum gravitational entanglement with IBM quantum computers
• Authors: Carlos Sab\'in
• Abstract summary: We report the digital quantum simulation of a hamiltonian involved in the generation of quantum entanglement by gravitational means. We perform a boson-qubit mapping and a digital gate decomposition specific for IBM quantum devices.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We report the digital quantum simulation of a hamiltonian involved in the generation of quantum entanglement by gravitational means. In particular, we focus on a pair of quantum harmonic oscillators, whose interaction via a quantum gravitational field generates single-mode squeezing in both modes at the same time, a non-standard process in quantum optics. We perform a boson-qubit mapping and a digital gate decomposition specific for IBM quantum devices. We use error mitigation and post-selection to achieve high-fidelity, accessing a parameter regime out of direct experimental reach.

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