Spin noise signatures of the self-induced Larmor precession

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Spin noise signatures of the self-induced Larmor precession

I. I. Ryzhov, V. O. Kozlov, N. S. Kuznetsov, I. Yu. Chestnov, A. V. Kavokin, A. Tzimis, Z. Hatzopoulos, P. G. Savvidis, G. G. Kozlov, and V. S. Zapasskii

Phys. Rev. Research 2, 022064(R) – Published 18 June 2020

Abstract

Bose-Einstein condensates of exciton-polaritons are known for their fascinating coherent and polarization properties. The spin state of the condensate is reflected in polarization of the exciton-polariton emission, with temporal fluctuations of this polarization being, in general, capable of reflecting quantum statistics of polaritons in the condensate. To study the polarization properties of optically trapped polariton condensates, we take advantage of the spin noise spectroscopy technique. The ratio between the noise of ellipticity of the condensate emission and its polarization plane rotation noise is found to be dependent, in a nontrivial way, on the intensity of continuous wave nonresonant laser pumping. We show that the interplay between the ellipticity and the rotation noise can be explained in terms of the competition between the self-induced Larmor precession of the condensate pseudospin and the static polarization anisotropy of the microcavity.

Received 31 March 2020
Revised 1 June 2020
Accepted 3 June 2020

DOI:https://doi.org/10.1103/PhysRevResearch.2.022064

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Polariton condensate

Spin noise spectroscopy

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

I. I. Ryzhov ^1,2, V. O. Kozlov ^1,2, N. S. Kuznetsov ¹, I. Yu. Chestnov ^3,4,5, A. V. Kavokin^3,4,6,7, A. Tzimis^8,9, Z. Hatzopoulos⁸, P. G. Savvidis ^3,4,8,9,10, G. G. Kozlov², and V. S. Zapasskii²

¹Photonics Department, St. Petersburg State University, Peterhof, 198504 St. Petersburg, Russia
²Spin Optics Laboratory, St. Petersburg State University, Peterhof, 198504 St. Petersburg, Russia
³Westlake University, School of Science, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
⁴Westlake Institute for Advanced Study, Institute of Natural Sciences, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
⁵Vladimir State University, 600000 Vladimir, Russia
⁶Spin Optics Laboratory, St. Petersburg State University, St. Petersburg 198504, Russia
⁷Russian Quantum Centre, 100 Novaya Street, 143025 Skolkovo, Moscow Region, Russia
⁸Foundation for Research and Technology–Hellas, Institute of Electronic Structure and Laser, P.O. Box 1527, Heraklion, Crete 71110, Greece
⁹Department of Materials Science and Technology, University of Crete, P.O. Box 2208, Heraklion, Crete 71003, Greece
¹⁰Department of Nanophotonics and Metamaterials, ITMO University, St. Petersburg, 197101, Russia

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Vol. 2, Iss. 2 — June - August 2020

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