Trade-offs between precision and fluctuations in charging finite-dimensional quantum batteries
(2024) In Physical Review E 109(1).- Abstract
Within quantum thermodynamics, many tasks are modeled by processes that require work sources represented by out-of-equilibrium quantum systems, often dubbed quantum batteries, in which work can be deposited or from which work can be extracted. Here we consider quantum batteries modeled as finite-dimensional quantum systems initially in thermal equilibrium that are charged via cyclic Hamiltonian processes. We present optimal or near-optimal protocols for N identical two-level systems and individual d-level systems with equally spaced energy gaps in terms of the charging precision and work fluctuations during the charging process. We analyze the trade-off between these figures of merit as well as the performance of local and global... (More)
Within quantum thermodynamics, many tasks are modeled by processes that require work sources represented by out-of-equilibrium quantum systems, often dubbed quantum batteries, in which work can be deposited or from which work can be extracted. Here we consider quantum batteries modeled as finite-dimensional quantum systems initially in thermal equilibrium that are charged via cyclic Hamiltonian processes. We present optimal or near-optimal protocols for N identical two-level systems and individual d-level systems with equally spaced energy gaps in terms of the charging precision and work fluctuations during the charging process. We analyze the trade-off between these figures of merit as well as the performance of local and global operations.
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- author
- Bakhshinezhad, Pharnam LU ; Jablonski, Beniamin R. ; Binder, Felix C. and Friis, Nicolai
- organization
- publishing date
- 2024-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review E
- volume
- 109
- issue
- 1
- article number
- 014131
- publisher
- American Physical Society
- external identifiers
-
- pmid:38366482
- scopus:85183317674
- ISSN
- 2470-0045
- DOI
- 10.1103/PhysRevE.109.014131
- language
- English
- LU publication?
- yes
- id
- a58e200c-3b73-46f8-969f-3dc3fa889fc9
- date added to LUP
- 2024-02-20 14:25:03
- date last changed
- 2024-04-23 16:11:22
@article{a58e200c-3b73-46f8-969f-3dc3fa889fc9,
abstract = {{<p>Within quantum thermodynamics, many tasks are modeled by processes that require work sources represented by out-of-equilibrium quantum systems, often dubbed quantum batteries, in which work can be deposited or from which work can be extracted. Here we consider quantum batteries modeled as finite-dimensional quantum systems initially in thermal equilibrium that are charged via cyclic Hamiltonian processes. We present optimal or near-optimal protocols for N identical two-level systems and individual d-level systems with equally spaced energy gaps in terms of the charging precision and work fluctuations during the charging process. We analyze the trade-off between these figures of merit as well as the performance of local and global operations.</p>}},
author = {{Bakhshinezhad, Pharnam and Jablonski, Beniamin R. and Binder, Felix C. and Friis, Nicolai}},
issn = {{2470-0045}},
language = {{eng}},
number = {{1}},
publisher = {{American Physical Society}},
series = {{Physical Review E}},
title = {{Trade-offs between precision and fluctuations in charging finite-dimensional quantum batteries}},
url = {{http://dx.doi.org/10.1103/PhysRevE.109.014131}},
doi = {{10.1103/PhysRevE.109.014131}},
volume = {{109}},
year = {{2024}},
}