Active demultiplexing of single photons from a solid‐state source. Issue 3 (11th April 2017)

• Record Type: Journal Article
• Authors: Lenzini, Francesco; Haylock, Ben; Loredo, Juan C.; Abrahão, Raphael A.; Zakaria, Nor A.; Kasture, Sachin; Sagnes, Isabelle; Lemaitre, Aristide; Phan, Hoang‐Phuong; Dao, Dzung Viet; Senellart, Pascale; Almeida, Marcelo P.; White, Andrew G.; Lobino, Mirko
• Is Part Of: Laser & photonics reviews. Volume 11:Issue 3(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-04-11
• Subjects: integrated optics -- quantum optics -- quantum dot -- single photon; Lasers -- Periodicals; Photonics -- Periodicals; Lasers -- Périodiques; Photonique -- Périodiques; 621.36
• DOI: 10.1002/lpor.201600297
• Languages: English
• ISSNs: 1863-8880

Abstract

Abstract : Single photons from a solid state‐source are deterministically routed into different output modes by a fully integrated active optical switch network. This scheme creates a multi‐fold single‐photon source from a micro‐pillar quantum dot, providing a crucial resource for photonic quantum information applications. Abstract: 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 source—a quantum‐dot deterministically coupled to a micropillar cavity—and a custom‐built demultiplexer—a 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.