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arXiv 2202.01190quant-ph
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不完美经典数据的量子读出

Quantum readout of imperfect classical data

Giuseppe Ortolano, Ivano Ruo-Berchera

摘要:

由于书写过程中的错误和不完善性,在物理支持中的经典数据的编码可以达到一定的准确度。此外,由于系统的物理或化学不稳定性,随着时间的推移可能会发生存储数据的一些退化。任何读出策略都应考虑到这种自然的不确定性,并尽量减少其影响。一个例子是光学数字存储器,其中信息被编码为细胞集合的反射率的两个值。使用纠缠的量子读取已经被证明可以增强理想光学存储器的读出,其中两个能级被完美地表征。在这项工作中,我们将分析的情况下,不完善的建设的存储器,并提出了一个优化的量子传感协议,以最大限度地提高读出精度存在不精确的写入。所提出的策略是可行的与当前的技术,是相对稳健的检测和光损耗。除了光学存储器,这项工作的影响,在生物系统中的模式识别,在分光光度计,以及任何时候的信息可以从透射/反射光学测量提取。

英文摘要:

The encoding of classical data in a physical support can be done up to some level of accuracy due to errors and the imperfection of the writing process. Moreover, some degradation of the storage data can happen over the time because of physical or chemical instability of the system. Any read-out strategy should take into account this natural degree of uncertainty and minimize its effect. An example are optical digital memories, where the information is encoded in two values of reflectance of a collection of cells. Quantum reading using entanglement, has been shown to enhances the readout of an ideal optical memory, where the two level are perfectly characterized. In this work, we will analyse the case of imperfect construction of the memory and propose an optimized quantum sensing protocol to maximize the readout accuracy in presence of imprecise writing. The proposed strategy is feasible with current technology and is relatively robust to detection and optical losses. Beside optical memories, this work have implications for identification of pattern in biological system, in spectrophotometry, and whenever the information can be extracted from a transmission/reflection optical measurement.

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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