Experimental observation of three-photon interference between a two-photon state and a weak coherent state on a beam splitter.
Experimental observation of three-photon interference between a two-photon state and a weak coherent state on a beam splitter.
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DOI：
10.1364/oe.26.020442
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发表时间：
2018-07
期刊：
影响因子：
3.8
通讯作者：
Tingyu Li;Saburo Sakurai;K. Kasai;Lirong Wang;M. Watanabe;Yun Zhang
中科院分区：
文献类型：
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作者：
Tingyu Li;Saburo Sakurai;K. Kasai;Lirong Wang;M. Watanabe;Yun Zhang
我们通过实验证明了分束器上弱相干态和自发参量下转换产生的双光子态之间的三光子干涉。这表明，由两个光子态和相干态的一个光子组成的组合三光子概率幅可以用来干扰另一个相干态的三光子概率幅。观测到的三光子符合率表明，干涉不仅取决于两个干涉场之间的相对相位，还取决于弱相干态的幅度。这可能会引入另一个自由参数来制备具有量子干涉的量子态，例如高N00N态。
We experimentally demonstrated a three-photon interference on a beam splitter between a weak coherent state and a two-photon state produced by a spontaneous parametric down conversion. It indicates that a combined three-photon probability amplitude, which is formed by the two-photon state and one-photon from the coherent state, can be used to interfere with another three-photon probability amplitude from the coherent state. The observed three-photon coincidence rate showed that the interference depended on not only the relative phase between the two interference field but also the amplitude of the weak coherent state. This may introduce another free parameter for preparing quantum state, such as high N00N state, with quantum interference.