Tailoring the resonant spin response of a stirred polariton condensate

Abstract

We report on the enhancement of the spin coherence time (T2) 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 stirring frequency with the condensate intrinsic Larmor precession, achieving an order of magnitude increase in spin coherence. By tuning the optical trap profile via excitation lasers intensity, we precisely control the resonance width. Here we present a theoretical model that explains our experimental findings 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.

References in corpus (18)

• Observation of a Discrete Time Crystal
• Semiconductor Spin Qubits
• Observation of Half Quantum Vortices in an Exciton-Polariton Condensate
• Optical ferris wheel for ultracold atoms
• Ultrafast tristable spin memory of a coherent polariton gas
• Spontaneous spin bifurcations and ferromagnetic phase transitions in a spinor exciton-polariton condensate
• Spin order and phase transitions in chains of polariton condensates
• Robust platform for engineering pure-quantum-state transitions in polariton condensates
• Quantum Vortex Formation in the "Rotating Bucket'' Experiment with Polariton Condensates
• Optical bistability under non-resonant excitation in spinor polariton condensates
• Polariton condensation in a planar microcavity with InGaAs quantum wells
• Optically driven rotation of exciton-polariton condensates
• Solid-state continuous time crystal with a built-in clock
• Optical orientation, polarization pinning, and depolarization dynamics in optically confined polariton condensates
• Qubit Analog with Polariton Superfluid in an Annular Trap
• All-optical linear polarization engineering in single and coupled exciton-polariton condensates
• Bose-Einstein condensation of polaritons at room temperature in a GaAs/AlGaAs structure
• Persistent polarization oscillations in ring-shape polariton condensates