Cross-Platform Comparison of Arbitrary Quantum Processes
- URL: http://arxiv.org/abs/2303.13911v1
- Date: Fri, 24 Mar 2023 10:51:11 GMT
- Title: Cross-Platform Comparison of Arbitrary Quantum Processes
- Authors: Congcong Zheng, Xutao Yu, Kun Wang
- Abstract summary: We present a protocol for comparing the performance of arbitrary quantum processes executed on spatially or temporally disparate quantum platforms.
We apply the protocol to compare the performance of five quantum devices from IBM and the "Qianshi" quantum computer from Baidu via the cloud.
- Score: 5.082103863450012
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: In this work, we present a protocol for comparing the performance of
arbitrary quantum processes executed on spatially or temporally disparate
quantum platforms using Local Operations and Classical Communication (LOCC).
The protocol involves sampling local unitary operators, which are then
communicated to each platform via classical communication to construct quantum
state preparation and measurement circuits. Subsequently, the local unitary
operators are implemented on each platform, resulting in the generation of
probability distributions of measurement outcomes. The max process fidelity is
estimated from the probability distributions, which ultimately quantifies the
relative performance of the quantum processes. Furthermore, we demonstrate that
this protocol can be adapted for quantum process tomography. We apply the
protocol to compare the performance of five quantum devices from IBM and the
"Qianshi" quantum computer from Baidu via the cloud. Remarkably, the
experimental results reveal that the protocol can accurately compare the
performance of the quantum processes implemented on different quantum
computers, requiring significantly fewer measurements than those needed for
full quantum process tomography. We view our work as a catalyst for
collaborative efforts in cross-platform comparison of quantum computers.
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