论文标题
有效的泵自我拒绝的路径键入光子对的集成源
Integrated source of path-entangled photon pairs with efficient pump self-rejection
论文作者
论文摘要
我们提出了一种具有有效的空间泵自我拒绝的窄带路径符合光子对的集成四波混合源的方案。该方案基于Kerr非线性介质中波导系统中的相关损失。我们证明，这种设置允许超过100dB泵的排斥，而无需进行其他过滤。通过驱动对称的集体模式来达到效果，该模式会因工程耗散而强烈衰减，而光子对出生在反对称模式下。还可以实现类似的设置，以产生泵自我拒绝的两光子中午状态。我们通过连贯的扩散光子学讨论该方案的实施，并在玻璃中（例如熔融硅胶和Ig2）以及平面半导体波导在磷化物（INP）和硅中撤销其可行性。
We present a scheme for an integrated four-wave mixing source of narrow-band path-entangled photon pairs with efficient spatial pump self-rejection. The scheme is based on correlated loss in a system of waveguides in Kerr nonlinear media. We demonstrate that this setup allows for upwards of 100dB pump rejection, without additional filtering. The effect is reached by driving the symmetric collective mode that is strongly attenuated by an engineered dissipation, while photon pairs are born in the antisymmetric mode. A similar set-up can additionally be realized for generation of two-photon NOON states, also with pump self-rejection. We discuss implementation of the scheme by means of the coherent diffusive photonics, and demostrate its feasibility both in glass (such as fused silica-glass and IG2), and planar semiconductor waveguide structures in indium phosphide (InP) and in silicon.
