Time correlated photon pairs are used to produce heralded single photon states for quantum integrated circuits. These states are generated by photon sources, which are called heralded single photon sources. They are based on the detection of one photon which heralds the presence of the other. In this way, pure single photon states can be probabilistically generated and, subsequently, manipulated in complex photonic circuits. Heralded single photon sources are the topic of this review. The authors detail the main parameters and the experiments involved in their characterization, with a focus on their use in integrated photonic circuits. Different geometries and technological platforms are compared, and an assessment of their performances is performed. The final result is that nearly perfect single photon sources are possible and feasible in an integrated platform. A few open issues are also underlined.
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December 2020
Review Article|
October 05 2020
On-chip heralded single photon sources
Special Collection:
Quantum Photonics
S. Signorini
;
S. Signorini
a)
Nanoscience Laboratory, Department of Physics, University of Trento
, Via Sommarive 14, 38123 Trento, Italy
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L. Pavesi
L. Pavesi
Nanoscience Laboratory, Department of Physics, University of Trento
, Via Sommarive 14, 38123 Trento, Italy
Search for other works by this author on:
a)
Electronic mail: stefano.signorini-1@unitn.it
Note: This paper is part of the special topic on Quantum Photonics.
AVS Quantum Sci. 2, 041701 (2020)
Article history
Received:
June 15 2020
Accepted:
September 11 2020
Citation
S. Signorini, L. Pavesi; On-chip heralded single photon sources. AVS Quantum Sci. 1 December 2020; 2 (4): 041701. https://doi.org/10.1116/5.0018594
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