Wells, LM, Kalliakos, S, Villa, B, Ellis, DJP, Stevenson, RM, Bennett, Anthony, Farrer, I, Ritchie, DA and Shields, AJ
2019.
Photon phase shift at the few-photon level and optical switching by a quantum dot in a microcavity.
Physical Review Applied
11
(6)
, -.
10.1103/PhysRevApplied.11.061001
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Abstract
We exploit the nonlinearity arising from the spin-photon interaction in an InAs quantum dot to demonstrate phase shifts of scattered light pulses at the single-photon level. Photon phase shifts of close to 90◦ are achieved using a charged quantum dot in a micropillar cavity. We also demonstrate a photon phase switch by using a spin-pumping mechanism through Raman transitions in an in-plane magnetic field. The experimental findings are supported by a theoretical model that explores the dynamics of the system. Our results demonstrate the potential of quantum-dot-induced nonlinearities for quantum information processing.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Engineering |
Subjects: | Q Science > QC Physics |
Publisher: | American Physical Society |
ISSN: | 2331-7019 |
Related URLs: | |
Date of First Compliant Deposit: | 5 August 2019 |
Last Modified: | 05 Aug 2019 11:30 |
URI: | http://orca.cf.ac.uk/id/eprint/124666 |
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