Feldmann, Polina and Klempt, Carsten and Smerzi, Augusto and Santos, Luis and Gessner, Manuel (2020) Interferometric Order Parameter for Excited-State Quantum Phase Transitions in Bose-Einstein Condensates. Physical Review Letters, 126 (23), p. 230602. American Physical Society. doi: 10.1103/PhysRevLett.126.230602. ISSN 0031-9007.
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Official URL: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.230602
Abstract
Excited-state quantum phase transitions extend the notion of quantum phase transitions beyond the ground state. They are characterized by closing energy gaps amid the spectrum. Identifying order parameters for excited-state quantum phase transitions poses, however, a major challenge. We introduce a topological order parameter that distinguishes excited-state phases in a large class of mean-field models and can be accessed by interferometry in current experiments with spinor Bose-Einstein condensates. Our work opens a way for the experimental characterization of excited-state quantum phases in atomic many-body systems.
Item URL in elib: | https://elib.dlr.de/187341/ | ||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||
Title: | Interferometric Order Parameter for Excited-State Quantum Phase Transitions in Bose-Einstein Condensates | ||||||||||||||||||
Authors: |
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Date: | 4 November 2020 | ||||||||||||||||||
Journal or Publication Title: | Physical Review Letters | ||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||
Volume: | 126 | ||||||||||||||||||
DOI: | 10.1103/PhysRevLett.126.230602 | ||||||||||||||||||
Page Range: | p. 230602 | ||||||||||||||||||
Publisher: | American Physical Society | ||||||||||||||||||
ISSN: | 0031-9007 | ||||||||||||||||||
Status: | Published | ||||||||||||||||||
Keywords: | Quanten-Phasenübergänge, Ordnungsparameter | ||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||
HGF - Program: | Space | ||||||||||||||||||
HGF - Program Themes: | Communication, Navigation, Quantum Technology | ||||||||||||||||||
DLR - Research area: | Raumfahrt | ||||||||||||||||||
DLR - Program: | R KNQ - Communication, Navigation, Quantum Technology | ||||||||||||||||||
DLR - Research theme (Project): | R - Quantum metrology under zero-gravity conditions (QUAMETUS) | ||||||||||||||||||
Location: | Hannover | ||||||||||||||||||
Institutes and Institutions: | Institute for Satellite Geodesy and Inertial Sensing > Quantum Limits of Metrology | ||||||||||||||||||
Deposited By: | Klempt, Carsten | ||||||||||||||||||
Deposited On: | 11 Jul 2022 08:17 | ||||||||||||||||||
Last Modified: | 11 Jul 2022 08:17 |
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