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arXiv 1806.00380quant-ph
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量子信道的实验设备无关测试

Experimental device-independent tests of quantum channels

Iris Agresti, Davide Poderini, Gonzalo Carvacho, Leopoldo Sarra, Rafael Chaves, Francesco Buscemi, Michele Dall'Arno, Fabio Sciarrino

摘要:

量子层析成像是目前主要采用的方法来评估系统的信息,因此在试图表征特定通道的行为时起着基础性的作用。尽管如此,量子断层扫描需要相信实验室中使用的设备能够正确地执行状态生成和测量。这项工作是基于量子信道的设备无关推断的理论框架,该理论框架是最近开发的,并在[Dall'Arno,Buscemi,Vedral,arXiv:1805.01159]和[Dall'Arno,Brandsen,Buscemi,PRSA 473,20160721(2017)]中用超导量子比特进行了实验。在这里,我们提出了一个完整的实验测试上的光子设置的两个设备无关的量子信道伪造和表征协议,分析,验证,并提高传统的量子过程层析成像所获得的结果。这个框架在量子信息处理中具有根本性的意义,并且还可能导致新方法的开发,从而消除在所有先前协议中通常被认为是理所当然的假设。

英文摘要:

Quantum tomography is currently the mainly employed method to assess the information of a system and therefore plays a fundamental role when trying to characterize the action of a particular channel. Nonetheless, quantum tomography requires the trust that the devices used in the laboratory perform state generation and measurements correctly. This work is based on the theoretical framework for the device-independent inference of quantum channels that was recently developed and experimentally implemented with superconducting qubits in [Dall'Arno, Buscemi, Vedral, arXiv:1805.01159] and [Dall'Arno, Brandsen, Buscemi, PRSA 473, 20160721 (2017)]. Here, we present a complete experimental test on a photonic setup of two device-independent quantum channels falsification and characterization protocols to analyze, validate, and enhance the results obtained by conventional quantum process tomography. This framework has fundamental implications in quantum information processing and may also lead to the development of new methods removing the assumptions typically taken for granted in all the previous protocols.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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