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arXiv 1906.05073quant-ph
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反$\u000b5mathcal{PT}$对称系统中信息流的实验观测

Experimental observation of information flow in the anti-$\mathcal{PT}$-symmetric system

Jingwei Wen, Guoqing Qin, Chao Zheng, Shijie Wei, Xiangyu Kong, Tao Xin, Guilu Long

AI总结:

本文提出用量子电路模拟通用反$\u000b5mathcal{PT}$对称系统的算法,并在核磁共振量子模拟器中首次观测到信息流振荡,证实对称性破缺时信息可完全恢复。

摘要:

近期与$\u000b5mathcal{PT}$对称系统相关的理论和实验研究,因其各种新颖特性以及在拓展标准量子力学方面的潜力,引起了前所未有的关注。然而,作为$\u000b5mathcal{PT}$对称性的对应物,关于反$\u000b5mathcal{PT}$对称性的研究仍然很少。在这里,我们提出一种利用量子电路模拟通用反$\u000b5mathcal{PT}$对称系统的算法。利用这些协议,我们在核磁共振量子模拟器中首次观测到信息流的振荡。我们将表明,当反$\u000b5mathcal{PT}$对称性破缺时,信息会从环境中完全恢复;而在对称性未破缺相中,任何信息都无法被取回。我们的工作为在量子计算机中对通用反$\u000b5mathcal{PT}$对称系统进行实际量子模拟和实验研究打开了大门。

英文摘要:

The recently theoretical and experimental researches related to $\mathcal{PT}$-symmetric system have attracted unprecedented attention because of various novel features and potentials in extending canonical quantum mechanics. However, as the counterpart of $\mathcal{PT}$-symmetry, there are only a few researches on anti-$\mathcal{PT}$-symmetry. Here, we propose an algorithm for simulating the universal anti-$\mathcal{PT}$-symmetric system with quantum circuit. Utilizing the protocols, an oscillation of information flow is observed for the first time in our Nuclear Magnetic Resonance quantum simulator. We will show that information will recover from the environment completely when the anti-$\mathcal{PT}$-symmetry is broken, whereas no information can be retrieved in the symmetry-unbroken phase. Our work opens the gate for practical quantum simulation and experimental investigation of universal anti-$\mathcal{PT}$-symmetric system in quantum computer.

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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