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Superradiance with local phase-breaking effects

Superradiance with local phase-breaking effects
Superradiance with local phase-breaking effects
We study the superradiant evolution of a set of N two-level systems spontaneously radiating under the effect of phase-breaking mechanisms. We investigate the dynamics generated by non-radiative losses and pure dephasing, and their interplay with spontaneous emission. Our results show that in the parameter region relevant to many solid-state cavity quantum electrodynamics experiments, even with a dephasing rate much faster than the radiative lifetime of a single two-level system, a sub-optimal collective superfluorescent burst is still observable. We also apply our theory to the dilute excitation regime, often used to describe optical excitations in solid-state systems. In this regime, excitations can be described in terms of bright and dark bosonic quasiparticles. We show how the effect of dephasing and losses in this regime translates into inter-mode scattering rates and quasiparticle lifetimes.
1050-2947
Shammah, Nathan
083ef7d3-d866-4007-8f72-58dd02b97e89
Lambert, Neill
2f880f88-b906-46dd-b495-68b9f28a233f
Nori, Franco
a90190de-06f0-4686-9fa6-c4ba705ad014
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Shammah, Nathan
083ef7d3-d866-4007-8f72-58dd02b97e89
Lambert, Neill
2f880f88-b906-46dd-b495-68b9f28a233f
Nori, Franco
a90190de-06f0-4686-9fa6-c4ba705ad014
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473

Shammah, Nathan, Lambert, Neill, Nori, Franco and De Liberato, Simone (2017) Superradiance with local phase-breaking effects. Physical Review A, 96, [023863]. (doi:10.1103/PhysRevA.96.023863).

Record type: Article

Abstract

We study the superradiant evolution of a set of N two-level systems spontaneously radiating under the effect of phase-breaking mechanisms. We investigate the dynamics generated by non-radiative losses and pure dephasing, and their interplay with spontaneous emission. Our results show that in the parameter region relevant to many solid-state cavity quantum electrodynamics experiments, even with a dephasing rate much faster than the radiative lifetime of a single two-level system, a sub-optimal collective superfluorescent burst is still observable. We also apply our theory to the dilute excitation regime, often used to describe optical excitations in solid-state systems. In this regime, excitations can be described in terms of bright and dark bosonic quasiparticles. We show how the effect of dephasing and losses in this regime translates into inter-mode scattering rates and quasiparticle lifetimes.

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AF11765 - Accepted Manuscript
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Accepted/In Press date: 10 August 2017
e-pub ahead of print date: 30 August 2017

Identifiers

Local EPrints ID: 413508
URI: http://eprints.soton.ac.uk/id/eprint/413508
ISSN: 1050-2947
PURE UUID: d3d04a20-a43f-423c-a79a-9a31cdbc48c7
ORCID for Simone De Liberato: ORCID iD orcid.org/0000-0002-4851-2633

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Date deposited: 25 Aug 2017 16:31
Last modified: 07 Oct 2020 02:03

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Contributors

Author: Nathan Shammah
Author: Neill Lambert
Author: Franco Nori

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