Active demultiplexing of single photons from a solid‐state source

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 differe...

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Bibliographic Details
Published in:Laser & photonics reviews 2017-05, Vol.11 (3), p.n/a
Main 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
Format: Article
Language:English
Subjects:
integrated optics
quantum dot
Quantum dots
quantum optics
single photon
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Summary: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. 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.
ISSN:1863-8880
1863-8899
DOI:10.1002/lpor.201600297