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복잡계 이론물리 연구단
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Quantum jumps on Anderson attractors

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Title
Quantum jumps on Anderson attractors
Author(s)
I.I. Yusipov; T. V. Laptyeva; M.V. Ivanchenko
Publication Date
2018-01
Journal
PHYSICAL REVIEW B, v.97, no.2, pp.020301 -
Publisher
AMER PHYSICAL SOC
Abstract
In a closed single-particle quantum system, spatial disorder induces Anderson localization of eigenstates and halts wave propagation. The phenomenon is vulnerable to interaction with environment and decoherence that is believed to restore normal diffusion. We demonstrate that for a class of experimentally feasible non-Hermitian dissipators, which admit signatures of localization in asymptotic states, quantum particle opts between diffusive and ballistic regimes, depending on the phase parameter of dissipators, with sticking about localization centers. In a diffusive regime, statistics of quantum jumps is non-Poissonian and has a power-law interval, a footprint of intermittent locking in Anderson modes. Ballistic propagation reflects dispersion of an ordered lattice and introduces the second timescale for jumps, resulting in non-nonmonotonous probability distribution. Hermitian dephasing dissipation makes localization features vanish, and Poissonian jump statistics along with normal diffusion are recovered. © 2018 American Physical Society
URI
http://pr.ibs.re.kr/handle/8788114/4297
ISSN
2469-9950
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > Journal Papers (저널논문)
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