Optical implementation of two-qubit nonlocal generalized quantum measurement

双量子位非局域广义量子测量的光学实现

• 批准号: 18J10639
• 负责人: Vidil Pierre
• 金额: $ 1.22万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-04-25 至 2020-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18J10639/
• 关键词: 量子計測; 量子光学; 量子もつれ; quantum measurement; quantum nonlocality; quantum entanglement; quantum optics

The optical setup to generate the hyper entangled photon pair has been completed by the final measurement stage, along with the electronics that are used to execute the coupling between the system state (polarization degree-of-freedom) and the meter state (time-of-arrival degree-of-freedom). The initial alignment yielded insufficient visibility at the output of the interferometer, which forced us to refine the original design and led to some delay in implementing the experiment and getting results. The superconducting nanowire single-photon detectors have been completely installed and are now ready to be used. All the theoretical results about nonlocal measurements without maximally-entangled meter states obtained so far have been summarized in a paper that has been uploaded on the arXiv, and which is to be submitted to a peer-reviewed journal soon.

产生超纠缠光子对的光学设置已经由最终测量阶段完成，沿着的是用于执行系统状态（偏振自由度）和仪表状态（到达时间自由度）之间的耦合的电子设备。初始对准导致干涉仪输出的可见度不足，这迫使我们改进原始设计，并导致实验实施和获得结果的一些延迟。超导纳米线单光子探测器已经完全安装完毕，现在可以使用了。到目前为止，所有关于没有最大纠缠米态的非局域测量的理论结果都已经总结在一篇论文中，该论文已经上传到arXiv上，并将很快提交给同行评审的期刊。

项目成果

Two-qubit arbitrary-strength measurement using a hyperentangled photon source

使用超纠缠光子源进行两量子位任意强度测量

• 发表时间: 2018
• 作者: Pierre Vidil;Keiichi Edamatsu;Vidil Pierre;Vidil Pierre
• 通讯作者: Vidil Pierre

Nonlocal Generalized Quantum Measurements of Spin Products Without Maximal Entanglement

• 发表时间: 2019-12
• 期刊: arXiv: Quantum Physics
• 作者: P. Vidil;K. Edamatsu

Deterministic measurement of nonlocal weak values for two-qubit systems

双量子位系统非局部弱值的确定性测量

• 发表时间: 2019
• 作者: VIDIL Pierre;三森康義;SADGROVE Mark;枝松圭一
• 通讯作者: 枝松圭一