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Photon echoes from (In,Ga)As quantum dots embedded in a Tamm-plasmon microcavity

Photon echoes from (In,Ga)As quantum dots embedded in a Tamm-plasmon microcavity
Photon echoes from (In,Ga)As quantum dots embedded in a Tamm-plasmon microcavity
We report on the coherent optical response from an ensemble of (In,Ga)As quantum dots (QDs) embedded in a planar Tamm-plasmon microcavity with a quality factor of approximately 100. Significant enhancement of the light-matter interaction is demonstrated under selective laser excitation of those quantum dots which are in resonance with the cavity mode. The enhancement is manifested through Rabi oscillations of the photon echo, demonstrating coherent control of excitons with picosecond pulses at intensity levels more than an order of magnitude smaller as compared with bare quantum dots. The decay of the photon echo transients is weakly changed by the resonator, indicating a small decrease of the coherence time T2 which we attribute to the interaction with the electron plasma in the metal layer located close (40 nm) to the QD layer. Simultaneously we see a reduction of the population lifetime T1, inferred from the stimulated photon echo, due to an enhancement of the spontaneous emission by a factor of 2, which is attributed to the Purcell effect, while nonradiative processes are negligible, as confirmed from time-resolved photoluminescence.
1550-235X
Salewski, M.
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Poltavtsev, S.V.
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Kapitonov, Yu. V.
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Vondran, J.
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Yakovlev, D.R.
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Schneider, C.
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Kamp, M.
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Hofling, S.
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Oulton, R.
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Akimov, A.
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Kavokin, A.V.
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Bayer, M.
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Salewski, M.
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Poltavtsev, S.V.
60196fb2-e51c-436c-8ad4-1a6a060e276d
Kapitonov, Yu. V.
c3e694ec-13ad-44db-abe2-f4738b18a943
Vondran, J.
c6b8b42a-cbeb-4fc5-833d-1d41fd5dd3ae
Yakovlev, D.R.
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Schneider, C.
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Kamp, M.
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Hofling, S.
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Oulton, R.
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Akimov, A.
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Kavokin, A.V.
70ffda66-cfab-4365-b2db-c15e4fa1116b
Bayer, M.
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Salewski, M., Poltavtsev, S.V., Kapitonov, Yu. V., Vondran, J., Yakovlev, D.R., Schneider, C., Kamp, M., Hofling, S., Oulton, R., Akimov, A., Kavokin, A.V. and Bayer, M. (2017) Photon echoes from (In,Ga)As quantum dots embedded in a Tamm-plasmon microcavity. Physical Review B, 95 (3), [035312]. (doi:10.1103/PhysRevB.95.035312).

Record type: Article

Abstract

We report on the coherent optical response from an ensemble of (In,Ga)As quantum dots (QDs) embedded in a planar Tamm-plasmon microcavity with a quality factor of approximately 100. Significant enhancement of the light-matter interaction is demonstrated under selective laser excitation of those quantum dots which are in resonance with the cavity mode. The enhancement is manifested through Rabi oscillations of the photon echo, demonstrating coherent control of excitons with picosecond pulses at intensity levels more than an order of magnitude smaller as compared with bare quantum dots. The decay of the photon echo transients is weakly changed by the resonator, indicating a small decrease of the coherence time T2 which we attribute to the interaction with the electron plasma in the metal layer located close (40 nm) to the QD layer. Simultaneously we see a reduction of the population lifetime T1, inferred from the stimulated photon echo, due to an enhancement of the spontaneous emission by a factor of 2, which is attributed to the Purcell effect, while nonradiative processes are negligible, as confirmed from time-resolved photoluminescence.

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Photon echoes from (In,Ga)As quantum dots embedded in a Tamm-plasmon microcavity - Accepted Manuscript
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Accepted/In Press date: 13 January 2017
e-pub ahead of print date: 30 January 2017
Published date: January 2017
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 410753
URI: http://eprints.soton.ac.uk/id/eprint/410753
ISSN: 1550-235X
PURE UUID: cc172a0b-4271-4483-aa85-996b34c9b468

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Date deposited: 09 Jun 2017 09:34
Last modified: 21 Nov 2021 06:54

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Contributors

Author: M. Salewski
Author: S.V. Poltavtsev
Author: Yu. V. Kapitonov
Author: J. Vondran
Author: D.R. Yakovlev
Author: C. Schneider
Author: M. Kamp
Author: S. Hofling
Author: R. Oulton
Author: A. Akimov
Author: A.V. Kavokin
Author: M. Bayer

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