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.

Abstract

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.

Citation

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. (2016). Single-photon electroluminescence for on-chip quantum networks. Applied physics letters, 109(16), 161101. https://doi.org/10.1063/1.4965295

• 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
• DOI: https://doi.org/10.1063/1.4965295
• Keywords: Quantum dots, Electroluminescence, Electric fields, Scanning electron microscopy, Linewidths
• Public URL: https://hull-repository.worktribe.com/output/444466
• Publisher URL: http://scitation.aip.org/content/aip/journal/apl/109/16/10.1063/1.4965295
• Additional Information: This is a copy of an open access article published in: Applied physics letters, 2016, v.109.
• Contract Date: Oct 21, 2016