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.
![]() |
PDF
- Published version
604kB |
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/ | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Document Type: | Article | ||||||||||||||||||||||||
Title: | Interferometric Order Parameter for Excited-State Quantum Phase Transitions in Bose-Einstein Condensates | ||||||||||||||||||||||||
Authors: |
| ||||||||||||||||||||||||
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, Apl. Prof. Carsten | ||||||||||||||||||||||||
Deposited On: | 11 Jul 2022 08:17 | ||||||||||||||||||||||||
Last Modified: | 11 Jul 2022 08:17 |
Repository Staff Only: item control page