Precise certification of a qubit space

IF 5.8 2区物理与天体物理 Q1 OPTICS

EPJ Quantum Technology Pub Date : 2024-03-19 DOI:10.1140/epjqt/s40507-024-00230-4

Tomasz Białecki, Tomasz Rybotycki, Josep Batle, Jakub Tworzydło, Adam Bednorz

引用次数: 0

Abstract

We demonstrate an implementation of the precise test of dimension on the qubit, using the public IBM quantum computer, using the determinant dimension witness. The accuracy is below 10⁻³ comparing to maximal possible value of the witness in higher dimension. The test involving minimal independent sets of preparation and measurement operations (gates) is applied both for specific configurations and parametric ones. The test is robust against nonidealities such as incoherent leakage and erroneous gate execution. Two of the IBM devices failed the test by more than 5 standard deviations, which has no simple explanation.

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量子比特空间的精确认证

我们利用 IBM 公共量子计算机，使用行列式维度见证，演示了量子比特维度精确测试的实现。与高维度见证的最大可能值相比，精度低于 10-3。测试涉及最小独立的准备和测量操作集（门），既适用于特定配置，也适用于参数配置。该测试对不连贯泄漏和错误门执行等非理想情况具有鲁棒性。IBM 两款设备的测试失败率超过 5 个标准差，这一点无法简单解释。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

EPJ Quantum Technology Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

7.70

自引率

7.50%

发文量

审稿时长

71 days

期刊介绍： Driven by advances in technology and experimental capability, the last decade has seen the emergence of quantum technology: a new praxis for controlling the quantum world. It is now possible to engineer complex, multi-component systems that merge the once distinct fields of quantum optics and condensed matter physics. EPJ Quantum Technology covers theoretical and experimental advances in subjects including but not limited to the following: Quantum measurement, metrology and lithography Quantum complex systems, networks and cellular automata Quantum electromechanical systems Quantum optomechanical systems Quantum machines, engineering and nanorobotics Quantum control theory Quantum information, communication and computation Quantum thermodynamics Quantum metamaterials The effect of Casimir forces on micro- and nano-electromechanical systems Quantum biology Quantum sensing Hybrid quantum systems Quantum simulations.