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arXiv 1506.00675quant-ph
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量子希尔伯特酒店

The Quantum Hilbert Hotel

Václav Potocek, Filippo M. Miatto, Mohammad Mirhosseini, Omar S. Magaña-Loaiza, Andreas C. Liapis, Daniel K. L. Oi, Robert W. Boyd, John Jeffers

摘要:

1924年,大卫·希尔伯特(David Hilbert)构思了一个矛盾的故事,涉及一家拥有无限多房间的酒店,以说明“无限”的数学概念的某些方面。在连续变量量子力学中,我们通常使用无限状态空间:在这里,我们表明,这样的理论设备可以容纳希尔伯特的酒店悖论的模拟。我们设计了一个协议,模仿发生在酒店客人身上的事情,以相干和确定性的方式将无限本征基的振幅映射到其原始量子数的两倍,在此过程中产生无限多个未被占用的能级。我们证明了该协议的可行性,通过实验实现它的轨道角动量的傍轴场。这种新的非高斯操作可以用于例如增强N00N个状态的灵敏度,用于增加信道的容量或用于将多个信道复用成单个信道。

英文摘要:

In 1924 David Hilbert conceived a paradoxical tale involving a hotel with an infinite number of rooms to illustrate some aspects of the mathematical notion of "infinity". In continuous-variable quantum mechanics we routinely make use of infinite state spaces: here we show that such a theoretical apparatus can accommodate an analog of Hilbert's hotel paradox. We devise a protocol that, mimicking what happens to the guests of the hotel, maps the amplitudes of an infinite eigenbasis to twice their original quantum number in a coherent and deterministic manner, producing infinitely many unoccupied levels in the process. We demonstrate the feasibility of the protocol by experimentally realising it on the orbital angular momentum of a paraxial field. This new non-Gaussian operation may be exploited for example for enhancing the sensitivity of N00N states, for increasing the capacity of a channel or for multiplexing multiple channels into a single one.

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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