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arXiv 0909.2432quant-ph
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通过时间对称平滑的经典和量子系统的最佳波形估计。II。应用于原子磁力学和哈代悖论

Optimal waveform estimation for classical and quantum systems via time-symmetric smoothing. II. Applications to atomic magnetometry and Hardy's paradox

Mankei Tsang

摘要:

量子平滑理论[Tsang,Phys. Rev. Lett. 102,250403(2009); Phys. Rev. A,印刷中(电子印刷arXiv:0906.4133)]被扩展以解释待估计的经典随机过程中的离散跳跃、量子系统中的离散变量,例如自旋、角动量和光子数,以及泊松测量,例如光子计数。应用扩展理论对原子磁力计进行了建模,并研究了相空间中的哈代佯谬。在哈代提出的实验的相空间图像中,预测的维格纳分布的负性被认为是经典推理和量子力学之间不一致的罪魁祸首。

英文摘要:

The quantum smoothing theory [Tsang, Phys. Rev. Lett. 102, 250403 (2009); Phys. Rev. A, in press (e-print arXiv:0906.4133)] is extended to account for discrete jumps in the classical random process to be estimated, discrete variables in the quantum system, such as spin, angular momentum, and photon number, and Poissonian measurements, such as photon counting. The extended theory is used to model atomic magnetometers and study Hardy's paradox in phase space. In the phase-space picture of Hardy's proposed experiment, the negativity of the predictive Wigner distribution is identified as the culprit of the disagreement between classical reasoning and quantum mechanics.

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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