Light-matter decoupling in the deep strong coupling regime:
the breakdown of the Purcell Effect
Light-matter decoupling in the deep strong coupling regime:
the breakdown of the Purcell Effect
Improvements in both the photonic confinement and the emitter design have led to a steady increase in the strength of the light-matter coupling in cavity quantum electrodynamics experiments. This has allowed us to access interaction-dominated regimes in which the state of the system can only be described in terms of mixed light-matter excitations. Here we show that, when the coupling between light and matter becomes strong enough, this picture breaks down, and light and matter degrees of freedom totally decouple. A striking consequence of such a counterintuitive phenomenon is that the Purcell effect is reversed and the spontaneous emission rate, usually thought to increase with the light-matter coupling strength, plummets instead for large enough couplings.
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De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
6 January 2014
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
De Liberato, Simone
(2014)
Light-matter decoupling in the deep strong coupling regime:
the breakdown of the Purcell Effect.
Physical Review Letters, 112 (1), , [16401].
(doi:10.1103/PhysRevLett.112.016401).
Abstract
Improvements in both the photonic confinement and the emitter design have led to a steady increase in the strength of the light-matter coupling in cavity quantum electrodynamics experiments. This has allowed us to access interaction-dominated regimes in which the state of the system can only be described in terms of mixed light-matter excitations. Here we show that, when the coupling between light and matter becomes strong enough, this picture breaks down, and light and matter degrees of freedom totally decouple. A striking consequence of such a counterintuitive phenomenon is that the Purcell effect is reversed and the spontaneous emission rate, usually thought to increase with the light-matter coupling strength, plummets instead for large enough couplings.
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Accepted/In Press date: 1 December 2013
e-pub ahead of print date: 6 January 2014
Published date: 6 January 2014
Organisations:
Quantum, Light & Matter Group
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Local EPrints ID: 401311
URI: http://eprints.soton.ac.uk/id/eprint/401311
PURE UUID: ed6b0a5f-053e-41e2-b37f-0697d8d8a7ce
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Date deposited: 11 Oct 2016 15:53
Last modified: 15 Mar 2024 03:46
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