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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
This is the latest version of this item.
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.
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| Item type | Article | ||||||
| Journal or Publication Title | Physical 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 | ||||||
| Date | 24 September 2018 | ||||||
| Institutions | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter | ||||||
| Identification Number |
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| Dewey Decimal Classification | 500 Science > 530 Physics | ||||||
| Status | Published | ||||||
| Refereed | Yes, this version has been refereed | ||||||
| Created at the University of Regensburg | Partially | ||||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-377873 | ||||||
| Item ID | 37787 |
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