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Signatures of the ultrastrong light-matter coupling regime

Signatures of the ultrastrong light-matter coupling regime
Signatures of the ultrastrong light-matter coupling regime
In a microcavity, light-matter coupling is quantified by the vacuum-Rabi frequency ?R. When ?R is larger than radiative and nonradiative loss rates, the system eigenstates (polaritons) are linear superposition of photonic and electronic excitations, a condition actively investigated in diverse physical implementations. Recently, a quantum electrodynamic regime (ultrastrong coupling) was predicted when ?R becomes comparable to the transition frequency. Here we report signatures of this regime in a quantum-well intersubband microcavity. Measuring the cavity-polariton dispersion in a room-temperature linear optical experiment, we directly observe the antiresonant light-matter coupling and the photon-energy renormalization of the vacuum field.
1550-235X
[4pp.]
Anappara, Aji A.
f7f9df57-dacd-4b16-90b3-e415002d796f
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Tredicucci, Alessandro
e3284696-a240-41cb-bb71-eaf753521a3c
Ciuti, Cristiano
07c4515c-526e-41e9-bd97-7e3868505c21
Biasiol, Giorgio
7ad8199b-1a7a-4a99-8270-0395ea4f851b
Sorba, Lucia
7585137a-4e90-4e54-8a0d-9ec5fbda21a7
Beltram, Fabio
0150b4f8-1aa1-44ba-b8ff-8cc41d4c9cca
Anappara, Aji A.
f7f9df57-dacd-4b16-90b3-e415002d796f
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Tredicucci, Alessandro
e3284696-a240-41cb-bb71-eaf753521a3c
Ciuti, Cristiano
07c4515c-526e-41e9-bd97-7e3868505c21
Biasiol, Giorgio
7ad8199b-1a7a-4a99-8270-0395ea4f851b
Sorba, Lucia
7585137a-4e90-4e54-8a0d-9ec5fbda21a7
Beltram, Fabio
0150b4f8-1aa1-44ba-b8ff-8cc41d4c9cca

Anappara, Aji A., De Liberato, Simone, Tredicucci, Alessandro, Ciuti, Cristiano, Biasiol, Giorgio, Sorba, Lucia and Beltram, Fabio (2009) Signatures of the ultrastrong light-matter coupling regime. Physical Review B, 79 (20), [4pp.]. (doi:10.1103/PhysRevB.79.201303).

Record type: Article

Abstract

In a microcavity, light-matter coupling is quantified by the vacuum-Rabi frequency ?R. When ?R is larger than radiative and nonradiative loss rates, the system eigenstates (polaritons) are linear superposition of photonic and electronic excitations, a condition actively investigated in diverse physical implementations. Recently, a quantum electrodynamic regime (ultrastrong coupling) was predicted when ?R becomes comparable to the transition frequency. Here we report signatures of this regime in a quantum-well intersubband microcavity. Measuring the cavity-polariton dispersion in a room-temperature linear optical experiment, we directly observe the antiresonant light-matter coupling and the photon-energy renormalization of the vacuum field.

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More information

Published date: 11 May 2009
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 351231
URI: https://eprints.soton.ac.uk/id/eprint/351231
ISSN: 1550-235X
PURE UUID: 861d00bd-a621-474e-b6d1-edc5689c72f3
ORCID for Simone De Liberato: ORCID iD orcid.org/0000-0002-4851-2633

Catalogue record

Date deposited: 17 Apr 2013 14:16
Last modified: 19 Nov 2019 01:36

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