The monolayer transition metal dichalcogenide (TMDs) are granted with valley degree of freedom due to broken inversion symmetry, and strong spin-orbit coupling. The degenerated states at band-edges of K(K ’ ) valley possess information of valley pseudospin, which experiences intervalley decoherence process during emission [1]. With valley decoherence not coupling to any radiative dipole, direct probing or manipulation of valley coherence in the time domain has remain a challenge. Here we propose a method of optically exploring the valley coherence time in the time-domain measurement.
S. Dufferwiel, T. P. Lyons, D. D. Solnyshkov, A. A. P. Trichet, Alessandro Catanzaro, Freddie Withers, G. Malpuech, J. M. Smith, Konstantin ‘kostya’ Novoselov, M. S. Skolnick, D. N. Krizhanovskii, A. I. Tartakovskii
T. P. Lyons, S. Dufferwiel, Matthew Brooks, F. Withers, Takashi Taniguchi, Kenji Watanabe, Konstantin ‘kostya’ Novoselov, Guido Burkard, A. I. Tartakovskii
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