Citation:
Hao, K. ; Moody, G. ; Wu, F. ; Dass, C. K. ; Xu, L. ; Chen, C. - H. ; Sun, L. ; Li, M. - Y. ; Li, L. - J. ; MacDonald, A. H. ; et al. Direct measurement of exciton valley coherence in monolayer WSe2. Nature Physics 12, 677. Copy at http://www.tinyurl.com/24q8hu8r