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Article overview
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Many-body localization protected quantum state transfer | | Norman Y. Yao
; Chris R. Laumann
; Ashvin Vishwanath
; | | Date: |
27 Aug 2015 | | Abstract: | In thermal phases, the quantum coherence of individual degrees of freedom is
rapidly lost to the environment. Many-body localized (MBL) phases limit the
spread of this coherence and appear promising for quantum information
applications. However, such applications require not just long coherence times
but also a means to transport and manipulate information. We demonstrate that
this can be done in a one dimensional model of interacting spins at infinite
temperature. Our protocol utilizes protected qubits which emerge at the
boundary between topological and trivial phases. State transfer occurs via
dynamic shifts of this boundary and is shown to preserve quantum information.
As an example, we discuss the implementation of a universal, two-qubit gate
based upon MBL-protected quantum state transfer. | | Source: | arXiv, 1508.6995 | | Services: | Forum | Review | PDF | Favorites | |
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