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Decoherence and the retrieval of lost information | | Yin Ye
; Yunshan Cao
; Xin-Qi Li
; Shmuel Gurvitz
; | | Date: |
19 Sep 2011 | | Abstract: | We found that in contrast with the common premise, a measurement on the
environment of an open quantum system can {em reduce} its decoherence rate. We
demonstrate it by studying an example of indirect qubit’s measurement, where
the information on its state is hidden in the environment. This information is
extracted by a distant device, coupled with the environment. We also show that
the reduction of decoherence generated by this device, is accompanied with
diminution of the environmental noise in a vicinity of the qubit. An
interpretation of these results in terms of quantum interference on large
scales is presented. | | Source: | arXiv, 1109.4027 | | Services: | Forum | Review | PDF | Favorites | |
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