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Projects / Programmes source: ARIS

Symmetries and quantum pumping

Research activity

Code Science Field Subfield
1.02.01  Natural sciences and mathematics  Physics  Physics of condesed matter 

Code Science Field
1.03  Natural Sciences  Physical sciences 
Keywords
Non-equilibrium quantum dynamics; Integrable systems; Many-body localization; Open driven quantum systems; Quantum transport
Evaluation (rules)
source: COBISS
Points
4,407.4
A''
1,410.42
A'
2,046.4
A1/2
3,964.52
CI10
9,744
CImax
672
h10
45
A1
16.69
A3
0.12
Data for the last 5 years (citations for the last 10 years) on May 29, 2024; A3 for period 2018-2022
Data for ARIS tenders ( 04.04.2019 – Programme tender, archive )
Database Linked records Citations Pure citations Average pure citations
WoS  500  15,248  13,220  26.44 
Scopus  496  15,791  13,795  27.81 
Researchers (7)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  04943  PhD Janez Bonča  Physics  Researcher  2020 - 2024  286 
2.  34445  PhD Zala Lenarčič  Physics  Head  2020 - 2024  73 
3.  25625  PhD Jernej Mravlje  Physics  Researcher  2020 - 2024  132 
4.  56001  PhD Sourav Nandy  Physics  Researcher  2021 - 2024  21 
5.  01105  PhD Peter Prelovšek  Physics  Researcher  2020 - 2024  424 
6.  29545  PhD Lev Vidmar  Physics  Researcher  2020 - 2024  136 
7.  23567  PhD Rok Žitko  Physics  Researcher  2020 - 2024  253 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  91,035 
Abstract
We explore the role of symmetries in quantum systems, which are driven out of equilibrium, for example, by laser pumping. The proposal investigates, on the one hand, systems with macroscopically many conservation laws. This includes integrable quantum systems (e.g., spin-chains) and models, where strong disorder leads to (many-body) localization. On the other hand, it studies symmetry-protected resonances manifest in towers of equidistant eigenstates in the energy spectrum. The guiding principle of the proposal is that weak driving can have a substantial effect if it pumps into a degree of freedom that is approximately protected by some symmetry or, equivalently, a conservation law. An everyday example is a greenhouse, which can be heated up to high temperatures by weak sunlight because the energy within the greenhouse is approximately conserved. The proposal employs this principle in different quantum setups and investigates when a weak driving can bring a system far from equilibrium, because of underlying approximate symmetries. The central aim of the proposed program is to connect theoretically fascinating idealized models to realistic experiments of driven quantum matter and thus pave the way for the observation of new phenomena, inaccessible to equilibrium states. A weak driving is used to revive exceptional features inherited from the symmetries even when these are only approximately realized, as is typically the case in nature and experiments. The proposal considers different setups and non-equilibrium protocols that stabilize nonequilibrium (steady) states with remarkable properties: integrability based heat- or spin pumps, many-body localization-based switches and exotic superconductivity in driven systems. While parts of the proposal explore new symmetry-based phenomena and their potential for technological applications, a complementary part develops efficient descriptions of driven quantum systems in the presence of symmetries and thus pushes the frontiers of non-equilibrium physics.
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