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Reck, Phillipp ; Gorini, Cosimo ; Richter, Klaus

Quantum time mirrors for general two-band systems

Reck, Phillipp , Gorini, Cosimo and Richter, Klaus (2018) Quantum time mirrors for general two-band systems. Physical Review B (PRB) 98 (12), p. 125421.

Date of publication of this fulltext: 10 Oct 2018 13:35
Article
DOI to cite this document: 10.5283/epub.37787

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Abstract

Methods that are devised to achieve reversal of quantum dynamics in time have been named “quatum time mirrors.” Such a time mirror can be considered as a generalization of Hahn's spin echo to systems with continuous degrees of freedom. We extend the quantum time mirror protocol originally proposed for Dirac dispersions to arbitrary two-band systems and establish the general requirements for its ...

Methods that are devised to achieve reversal of quantum dynamics in time have been named “quatum time mirrors.” Such a time mirror can be considered as a generalization of Hahn's spin echo to systems with continuous degrees of freedom. We extend the quantum time mirror protocol originally proposed for Dirac dispersions to arbitrary two-band systems and establish the general requirements for its efficient implementation. We further discuss its sensitivity to various nonhomogeneous perturbations including disorder potentials and the effect of external static magnetic and electric fields. Our general statements are verified for a number of exemplary Hamiltonians, whose phase-coherent dynamics are studied both analytically and numerically. The Hamiltonians considered can be used to describe the low-energy properties of systems as diverse as cold atom-optics setups, direct band gap semiconductors, or (mono- or bilayer) graphene. We discuss the consequences of many-body effects at a qualitative level, and consider the protocol feasibility in state-of-the-art experimental setups.



Involved Institutions


Details

Item typeArticle
Journal or Publication TitlePhysical Review B (PRB)
Publisher:American Physical Society
Open Access Type:Due to SHERPA/RoMEO
Volume:98
Number of Issue or Book Chapter:12
Number of Pages:22
Page Range:p. 125421
Date24 September 2018
InstitutionsPhysics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter
Identification Number
ValueType
10.1103/PhysRevB.98.125421DOI
1805.10160arXiv ID
Dewey Decimal Classification500 Science > 530 Physics
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgPartially
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-377873
Item ID37787

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