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Matter wave coupling of spatially separated and unequally pumped polariton condensates

Matter wave coupling of spatially separated and unequally pumped polariton condensates
Matter wave coupling of spatially separated and unequally pumped polariton condensates

Spatial quantum coherence between two separated driven-dissipative polariton condensates created nonresonantly and with a different occupation is studied. We identify the regions where the condensates remain coherent with the phase difference continuously changing with the pumping imbalance and the regions where each condensate acquires its own chemical potential with phase differences exhibiting time-dependent oscillations. We show that in the mutual coherence limit the coupling consists of two competing contributions: a symmetric Heisenberg exchange and the Dzyloshinskii-Moriya asymmetric interactions that enable a continuous tuning of the phase relation across the dyad and derive analytic expressions for these types of interactions. The introduction of nonequal pumping increases the complexity of the type of problems that can be solved by polariton condensates arranged in a graph configuration. If equally pumped polaritons condensates arrange their phases to solve the constrained quadratic minimisation problem with a real symmetric matrix, the nonequally pumped condensates solve that problem for a general Hermitian matrix.

2469-9950
Kalinin, Kirill P.
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Lagoudakis, Pavlos G.
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Berloff, Natalia G.
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Kalinin, Kirill P.
cb5caf97-faac-4b3f-81a7-6d81476be1d0
Lagoudakis, Pavlos G.
ea50c228-f006-4edf-8459-60015d961bbf
Berloff, Natalia G.
de2658f8-d78b-4552-ac62-33290762b797

Kalinin, Kirill P., Lagoudakis, Pavlos G. and Berloff, Natalia G. (2018) Matter wave coupling of spatially separated and unequally pumped polariton condensates. Physical Review B, 97 (9), [094512]. (doi:10.1103/PhysRevB.97.094512).

Record type: Article

Abstract

Spatial quantum coherence between two separated driven-dissipative polariton condensates created nonresonantly and with a different occupation is studied. We identify the regions where the condensates remain coherent with the phase difference continuously changing with the pumping imbalance and the regions where each condensate acquires its own chemical potential with phase differences exhibiting time-dependent oscillations. We show that in the mutual coherence limit the coupling consists of two competing contributions: a symmetric Heisenberg exchange and the Dzyloshinskii-Moriya asymmetric interactions that enable a continuous tuning of the phase relation across the dyad and derive analytic expressions for these types of interactions. The introduction of nonequal pumping increases the complexity of the type of problems that can be solved by polariton condensates arranged in a graph configuration. If equally pumped polaritons condensates arrange their phases to solve the constrained quadratic minimisation problem with a real symmetric matrix, the nonequally pumped condensates solve that problem for a general Hermitian matrix.

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Matter wave coupling of spatially separated and unequally - Accepted Manuscript
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Accepted/In Press date: 2 March 2018
e-pub ahead of print date: 23 March 2018
Published date: March 2018
Additional Information: Author Lagoudakis confirmed Arxiv copy 1712.06279v1 is AM.

Identifiers

Local EPrints ID: 420054
URI: http://eprints.soton.ac.uk/id/eprint/420054
ISSN: 2469-9950
PURE UUID: ea786c4d-e7a7-481d-b6ca-bc9cf9f9956f

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Date deposited: 25 Apr 2018 16:31
Last modified: 16 Dec 2019 18:18

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Contributors

Author: Kirill P. Kalinin
Author: Natalia G. Berloff

University divisions

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