2022/09/09 by H. S. Borges, S., Borges H., Celso Alves do Nascimento Júnior +13
Computer Science · Materials Science · Neuroscience · #2D Materials and Applications #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Photoreceptor and optogenetics research #Quantum Information and Cryptography #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.2209.04558
openalex publication_date 2022/09/09 · openalex created_date 2022/09/14 · openalex updated_date 2026/08/01
We report dissipative dynamics of two valley excitons residing in the K and K^′-valleys of bare WSe2 monolayer and the one being integrated into a bimodal optical cavity. In the former, only when the exciton-field detunings in the K and K^′-valleys are rigorously equal (resonant detuning), partially entangled stationary states can be created. Otherwise the concurrence of exciton qubits turns to zero. Remarkably, in the latter (the WSe2 monolayer in a bimodal optical cavity), the transfers of entanglement from one subsystem (exciton/light) to the other (light/exciton) take place. Hence a finite stationary concurrence of exciton qubits is always generated, independent of whether the exciton-field detuning in two valleys is resonant or non-resonant. In addition, it can even reach as high as 1 (maximally entangled state of two valley excitons). Since there no real system which has a strictly resonant detuning, an immersion of the WSe2 monolayer in a bimodal optical cavity provides an opportunity to overcome the challenge facing by the bare WSe2, opening a novel realm of potential qubits.