title: Preservation of bipartite pseudoentanglement in solids using dynamical decoupling.
abstract: A crucial challenge for future quantum technologies is to protect fragile entanglement against environment-induced decoherence. Here we demonstrate experimentally that dynamical decoupling can preserve bipartite pseudoentanglement in phosphorous donors in a silicon system. In particular, the lifetime of pseudoentangled states is extended from 0.4  μs in the absence of decoherence control to 30  μs in the presence of a two-flip dynamical decoupling sequence.
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui, People's Republic of China.
authors.forename: Ya
authors.initials: Y
authors.lastname: Wang
authors.forename: Xing
authors.initials: X
authors.lastname: Rong
authors.forename: Pengbo
authors.initials: P
authors.lastname: Feng
authors.forename: Wanjie
authors.initials: W
authors.lastname: Xu
authors.forename: Bo
authors.initials: B
authors.lastname: Chong
authors.forename: Ji-Hu
authors.initials: JH
authors.lastname: Su
authors.forename: Jiangbin
authors.initials: J
authors.lastname: Gong
authors.forename: Jiangfeng
authors.initials: J
authors.lastname: Du