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arXiv 2004.11782quant-ph
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玻色量子场多模态的纠缠与光学非经典性

Relating the Entanglement and Optical Nonclassicality of Multimode States of a Bosonic Quantum Field

Anaelle Hertz, Nicolas J. Cerf, Stephan De Bièvre

摘要:

玻色量子场的量子性质表现在它的纠缠、相干或光学非经典性,这些都是量子计算或计量学的资源。我们提供了定量的和可计算的界限纠缠措施与光学非经典措施。这些界限意味着强纠缠态必然是强光学非经典的。作为一个应用,我们推断出的纠缠,可以产生与光学非经典状态碰撞分束器上的强界。对于高斯态,我们分析了对数负性和一个特定的非经典证人称为“正交相干尺度”之间的联系。

英文摘要:

The quantum nature of the state of a bosonic quantum field manifests itself in its entanglement, coherence, or optical nonclassicality which are each known to be resources for quantum computing or metrology. We provide quantitative and computable bounds relating entanglement measures with optical nonclassicality measures. These bounds imply that strongly entangled states must necessarily be strongly optically nonclassical. As an application, we infer strong bounds on the entanglement that can be produced with an optically nonclassical state impinging on a beam splitter. For Gaussian states, we analyze the link between the logarithmic negativity and a specific nonclassicality witness called "quadrature coherence scale".

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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