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arXiv 0705.1904quant-ph
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基于测量的量子计算的线性光量子存储器

Loss Tolerant Linear Optical Quantum Memory By Measurement Based Quantum Computing

Michael Varnava, Daniel Browne, Terry Rudolph

摘要:

我们给出了一个线性光量子存储器的容损方案,该存储器本身是容损的。我们使用的编码最近在[物理学评论快报。97,120501,(2006)],并给出了有效实现这一点的方法。整个方法存在于量子计算的“单向”模型中。我们的研究结果表明,有可能建立一个容损量子存储器,这样,如果要求是保持数据存储在任意长的时间,那么这是可能的,只有多项式增加资源和递增的单个光子寿命。

英文摘要:

We give a scheme for loss tolerantly building a linear optical quantum memory which itself is tolerant to qubit loss. We use the encoding recently introduced in [Phys. Rev. Lett. 97, 120501, (2006)] and give a method for efficiently achieving this. The entire approach resides within the "One-way" model for quantum computing. Our results suggest that it is possible to build a loss tolerant quantum memory, such that if the requirement is to keep the data stored over arbitrarily long times then this is possible with only polynomially increasing resources and logarithmically increasing individual photon life times.

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