Realization of photonic time crystals via spin bifurcations of exciton-polariton condensates

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Title:	Realization of photonic time crystals via spin bifurcations of exciton-polariton condensates
Authors:	程思誠 Szu-Cheng, Cheng 鄭世達 Shih-Da, Jheng Ting-Wei, Chen
Contributors:	光電物理學系 Department of Optoelectric Physics
Date:	2024-06-17
Issue Date:	2024-07-22 09:35:45 (UTC+8)
Publisher:	Optica Publishing Group (formerly OSA)
Abstract:	We have theoretically realized a photonic time crystal in a homogeneous spinor exciton-polariton condensate subject to a cavity strain induced energy splitting between the x- and y-polarized polaritons with distinct loss rates. Numerical modeling based on the time-dependent open dissipative Gross-Pitaevskii equation results in the phase transition from linearly-polarized spinor condensate at low pump powers into a circularly-polarized one and then a photonic time crystal at higher pump powers. This phenomenon occurs only under the condition that the lower-energy x-polarized condensate has a higher loss rate than the y-polaried condensate, which can exist intrinsically in the semiconductor microcavities.
Relation:	Optics Express, 32(13), 23524 - 23535.
Appears in Collections:	[Department of Physics ] journal articles

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