Active demultiplexing of single photons from a solid-state source

作者：Lenzini Francesco; Haylock Ben; Loredo Juan C; Abrahao Raphael A; Zakaria Nor A; Kasture Sachin; Sagnes Isabelle; Lemaitre Aristide; Hoang Phuong Phan; Dzung Viet Dao; Senellart Pascale; Almeida Marcelo P; White Andrew G; Lobino Mirko^*

来源：Laser & Photonics Reviews, 2017, 11(3): 1600297.

DOI：10.1002/lpor.201600297

• integrated optics
• quantum optics
• quantum dot
• single photon

A scheme for active temporal-to-spatial demultiplexing of single photons generated by a solid-state source is introduced. The scheme scales quasi-polynomially with photon number, providing a viable technological path for routing n photons in the one temporal stream from a single emitter to n different spatial modes. Active demultiplexing is demonstrated using a state-of-the-art photon sourcea quantum-dot deterministically coupled to a micropillar cavityand a custom-built demultiplexera network of electro-optically reconfigurable waveguides monolithically integrated in a lithium niobate chip. The measured demultiplexer performance can enable a six-photon rate three orders of magnitude higher than the equivalent heralded SPDC source, providing a platform for intermediate quantum computation protocols.

• 出版日期2017-5