Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, RJ 21941-972, Brazil.
Sci Rep. 2014 Jun 18;4:5337. doi: 10.1038/srep05337.
We demonstrate the use of a phase-only spatial light modulator for the measurement of transverse spatial distributions of coincidence counts between twin photon beams, in a fully automated fashion. This is accomplished by means of the polarization dependence of the modulator, which allows the conversion of a phase pattern into an amplitude pattern. We also present a correction procedure, that accounts for unwanted coincidence counts due to polarization decoherence effects.
我们演示了使用纯相位空间光调制器以全自动方式测量双光子光束之间符合计数的横向空间分布。这是通过调制器的偏振依赖性来实现的，该依赖性允许将相位图案转换为幅度图案。我们还提出了一种校正程序，用于校正由于偏振退相干效应引起的不需要的符合计数。
