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Single-photon electroluminescence for on-chip quantum networks

Bentham, C.; Hallett, D.; Prtljaga, N.; Royall, B.; Vaitiekus, D.; Coles, R. J.; Clarke, E.; Fox, A. M.; Skolnick, M. S.; Itskevich, I. E.; Wilson, L. R.


C. Bentham

D. Hallett

N. Prtljaga

B. Royall

D. Vaitiekus

R. J. Coles

E. Clarke

A. M. Fox

M. S. Skolnick

I. E. Itskevich

L. R. Wilson


An electrically driven single-photon source has been monolithically integrated with nano-photonic circuitry. Electroluminescent emission from a single InAs/GaAs quantum dot (QD) is channelled through a suspended nanobeam waveguide. The emission line has a linewidth of below 6 μeV, demonstrating the ability to have a high coherence, electrically driven, waveguide coupled QD source. The single-photon nature of the emission is verified by g (2) (τ) correlation measurements. Moreover, in a cross-correlation experiment, with emission collected from the two ends of the waveguide, the emission and propagation of single photons from the same QD is confirmed. This work provides the basis for the development of electrically driven on-chip single-photon sources, which can be readily coupled to waveguide filters, directional couplers, phase shifters, and other elements of quantum photonic networks.


Bentham, C., Hallett, D., Prtljaga, N., Royall, B., Vaitiekus, D., Coles, R. J., …Wilson, L. R. (2016). Single-photon electroluminescence for on-chip quantum networks. Applied physics letters, 109(16), 161101.

Journal Article Type Article
Acceptance Date Oct 1, 2016
Online Publication Date Oct 1, 2016
Publication Date Oct 17, 2016
Deposit Date Oct 21, 2016
Publicly Available Date Oct 21, 2016
Journal Applied physics letters
Print ISSN 0003-6951
Electronic ISSN 1077-3118
Publisher American Institute of Physics
Peer Reviewed Peer Reviewed
Volume 109
Issue 16
Pages 161101
Keywords Quantum dots, Electroluminescence, Electric fields, Scanning electron microscopy, Linewidths
Public URL
Publisher URL
Additional Information This is a copy of an open access article published in: Applied physics letters, 2016, v.109.


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