Digital quantum simulation of quantum gravitational entanglement with IBM quantum computers

EPJ Quantum Technology

Research

Carlos Sabín¹ 

[1] Departamento de Física Teórica, Universidad Autónoma de Madrid, 28049, Madrid, Spain;

关键词: Quantum simulation;    Quantum computation;    Quantum gravity;   

DOI  :  10.1140/epjqt/s40507-023-00161-6

 received in 2022-09-29, accepted in 2023-01-26,  发布年份 2023

来源: Springer

【 摘 要 】

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.

【 授权许可】

CC BY   
© The Author(s) 2023

【 图 表 】

12302_2023_718_Article_IEq20.gif

Fig. 6

Fig. 3

Fig. 5

Fig. 8

Fig. 2

Fig. 2

Fig. 6

Fig. 2

Fig. 4

Fig. 1

Fig. 1

Fig. 1

Fig. 8

Fig. 5

Fig. 4

Fig. 2

Fig. 3

12302_2023_718_Article_IEq4.gif

Fig. 2

Fig. 3

Fig. 4

40708_2023_184_Article_IEq16.gif

Fig. 1

Fig. 1

Fig. 6

Fig. 1

Fig. 2

Fig. 3

Fig. 7

Fig. 1

Fig. 1

Fig. 10

Fig. 4

Fig. 6

Fig. 1

Fig. 5

Fig. 6

Fig. 3

40517_2023_248_Article_IEq5.gif

40517_2023_248_Article_IEq4.gif

40517_2023_248_Article_IEq3.gif

40517_2023_248_Article_IEq2.gif

Fig. 6

Fig. 1

Fig. 1