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arXiv 2201.01179quant-ph
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一种从非相互作用光子发射体阵列产生高维纠缠的协议

Protocol for generation of high-dimensional entanglement from an array of non-interacting photon emitters

Thomas J. Bell, Jacob F. F. Bulmer, Alex E. Jones, Stefano Paesani, Dara P. S. McCutcheon, Anthony Laing

摘要:

将高维量子信息编码为单光子可以为量子技术提供各种益处,例如改进的噪声恢复能力。然而,按需高效生成高维纠缠被认为是当前和不久的将来光子量子技术所无法达到的。我们提出了一个协议,近确定性的产生$N$光子,$d$维光子Greenberger-Horne-Zeilinger(GHZ)态使用一个阵列的$d$非相互作用的单光子发射器。我们分析了量子发射器的常见误差源(如光子光谱可分辨性和时间失配)对性能的影响,发现它们很容易通过时间分辨检测进行校正,以产生多个量子点的高保真GHZ态。当应用于量子密钥分发场景时,我们的协议表现出更好的损失容忍度和密钥速率时,增加的维数超过二进制编码。

英文摘要:

Encoding high-dimensional quantum information into single photons can provide a variety of benefits for quantum technologies, such as improved noise resilience. However, the efficient generation of on-demand, high-dimensional entanglement was thought to be out of reach for current and near-future photonic quantum technologies. We present a protocol for the near-deterministic generation of $N$-photon, $d$-dimensional photonic Greenberger-Horne-Zeilinger (GHZ) states using an array of $d$ non-interacting single-photon emitters. We analyse the impact on performance of common sources of error for quantum emitters, such as photon spectral distinguishability and temporal mismatch, and find they are readily correctable with time-resolved detection to yield high fidelity GHZ states of multiple qudits. When applied to a quantum key distribution scenario, our protocol exhibits improved loss tolerance and key rates when increasing the dimensionality beyond binary encodings.

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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