Work

Tailoring the resonant spin response of a stirred polariton condensate

Year: 2025

Type: article

Abstract: We report on the enhancement of the spin coherence time $({T}_{2})$ by almost an order of magnitude in exciton-polariton condensates through driven spin precession resonance. Using a rotating optical trap formed by a bichromatic laser excitation we synchronize the trap's stirring frequency with the condensate's intrinsic Larmor precession, achieving a substantial increase in spin coherence. By tuning the optical trap profile via the excitation laser intensity, we precisely control the resonance width. Here, we present a theoretical model that explains our experimental results in terms of the mutual synchronization of the condensate circular polarization components. Our findings underpin the potential of polariton condensates for spinoptronic devices and quantum technologies.

Source: Physical review. B./Physical review. B

DOI: 10.1103/lxv5-qwxw

Authors: I. Gnusov, A. Yulin, S. Baryshev, S. Alyatkin, P. G. Lagoudakis

Institutions: Skolkovo Institute of Science and Technology, ITMO University

Language: English

Topic: Strong Light-Matter Interactions

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: University of Sheffield, Russian Science Foundation

Award: G5966750387