Bennett, Anthony J.  ORCID: https://orcid.org/0000-0002-5386-3710, Lee, James P., Ellis, David J. P., Meany, Thomas, Murray, Eoin, Floether, Frederik F., Griffths, Jonathan P., Farrer, Ian, Ritchie, David A. and Shields, Andrew J.
2016.
Cavity-enhanced coherent light scattering from a quantum dot.
Science Advances
2
(4)
, e1501256.
10.1126/sciadv.1501256
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Abstract
The generation of coherent and indistinguishable single photons is a critical step for photonic quantum technologies in information processing and metrology. A promising system is the resonant optical excitation of solid-state emitters embedded in wavelength-scale three-dimensional cavities. However, the challenge here is to reject the unwanted excitation to a level below the quantum signal. We demonstrate this using coherent photon scattering from a quantum dot in a micropillar. The cavity is shown to enhance the fraction of light that is resonantly scattered toward unity, generating antibunched indistinguishable photons that are 16 times narrower than the time-bandwidth limit, even when the transition is near saturation. Finally, deterministic excitation is used to create two-photon N00N states with which we make superresolving phase measurements in a photonic circuit.
| Item Type: | Article |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Engineering |
| Uncontrolled Keywords: | Quantum physics; photon; resonant; cavity |
| Additional Information: | This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
| Publisher: | American Association for the Advancement of Science |
| ISSN: | 2375-2548 |
| Date of First Compliant Deposit: | 27 November 2017 |
| Date of Acceptance: | 25 March 2016 |
| Last Modified: | 05 May 2023 02:27 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/106841 |
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