arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1409.7101quant-ph
收藏

用光子数分辨探测法直接测量维格纳函数

Direct measurement of the Wigner function by photon-number-resolving detection

Niranjan Sridhar, Reihaneh Shahrokhshahi, Aaron J. Miller, Brice Calkins, Thomas Gerrits, Adriana Lita, Sae Woo Nam, Olivier Pfister

摘要:

光子数旋转(PNR)检测允许直接测量光学模式的Wigner准概率分布,而不需要数值处理逆Radon变换[K. Banaszek和K. Wódkiewicz,Phys. Rev. Lett. 76,4344(1996)]。在这项工作中,我们复制了Banaszek等人[Phys. Rev. A 60,674(1999)]关于纯相干态及其统计混合物的量子层析成像的开创性实验,并将其扩展到更一般的光子通量情况,即每个探测时间远不止一个光子。这是通过使用超导过渡边缘传感器来执行PNR检测从0到5个光子在1064 nm,在约70%的系统效率和没有死时间。我们详细的信号采集和检测效率,并讨论应用这种量子层析成像的非高斯状态的前景。

英文摘要:

Photon-number-revolving (PNR) detection allows the direct measurement of the Wigner quasiprobability distribution of an optical mode without the need for numerically processing an inverse Radon transform [K. Banaszek and K. Wódkiewicz, Phys. Rev. Lett. 76, 4344 (1996)]. In this work, we reproduced the seminal experiment of Banaszek et al. [Phys. Rev. A 60, 674 (1999)] of quantum tomography of a pure coherent state, and of a statistical mixture thereof, and extended it to the more general case of photon fluxes with much more than one photon per detection time. This was made possible by the use of a superconducting transition-edge sensor to perform PNR detection from 0 to 5 photons at 1064 nm, at about 70% system efficiency and with no dead time. We detail signal acquisition and detection efficiency and discuss prospects for applying such quantum tomography to non-Gaussian states.

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。

↑