Electrically driven and electrically tunable quantum light sources
Accepted version
Peer-reviewed
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Abstract
Compact and electrically controllable on-chip sources of indistinguishable photons are desirable for the development of integrated quantum technologies. We demonstrate that two quantum dot light emitting diodes (LEDs) in close proximity on a single chip can function as a tunable, all-electric quantum light source. Light emitted by an electrically excited driving LED is used to excite quantum dots in the neighbouring diode. The wavelength of the quantum dot emission from the neighbouring driven diode is tuned via the quantum confined Stark effect. We also show that we can electrically tune the fine structure splitting.
Description
Keywords
5108 Quantum Physics, 40 Engineering, 4009 Electronics, Sensors and Digital Hardware, 51 Physical Sciences
Journal Title
Applied Physics Letters
Conference Name
Journal ISSN
0003-6951
1077-3118
1077-3118
Volume Title
110
Publisher
American Institute of Physics
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Sponsorship
EPSRC (via University of York) (EP/M013472/1 R16690)
The authors acknowledge funding from the EPSRC for MBE system used for the growth of the QD-LED. E.M. and C.D. acknowledge support by the Marie Curie Actions within the Seventh Framework Programme for Research of the European Commission, under the Ini- tial Training Network PICQUE (Grant No. 608062) J. L. gratefully acknowledges financial support from the EPSRC CDT in Photonic Systems Development and Toshiba Research Europe Ltd.