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arXiv 0901.0371quant-ph
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宽带介观极化压缩真空的产生和直接探测

Generation and Direct Detection of Broadband Mesoscopic Polarization-Squeezed Vacuum

T. Sh. Iskhakov, M. V. Chekhova, G. Leuchs

摘要:

利用皮秒脉冲泵浦的两个正交取向的I型BBO晶体的行波OPA,我们在很宽的波长和角度范围内产生垂直和水平偏振压缩真空态。根据这些状态之间的相位,在一个或另一个斯托克斯参数的波动被抑制低于散粒噪声限制。由于产生大量的光子对,不需要本振子,直接探测可观察到3dB压缩。

英文摘要:

Using a traveling-wave OPA with two orthogonally oriented type-I BBO crystals pumped by picosecond pulses, we generate vertically and horizontally polarized squeezed vacuum states within a broad range of wavelengths and angles. Depending on the phase between these states, fluctuations in one or another Stokes parameters are suppressed below the shot-noise limit. Due to the large number of photon pairs produced, no local oscillator is required, and 3dB squeezing is observed by means of direct detection.

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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