Self-Calibrating Superconducting Pair-Breaking Detector
(2021) In Physical Review Letters 127(14).- Abstract
We propose and experimentally demonstrate a self-calibrating detector of Cooper pair depairing in a superconductor based on a mesoscopic superconducting island coupled to normal metal leads. On average, exactly one electron passes through the device per broken Cooper pair, independent of the absorber volume, device, or material parameters. The device operation is explained by a simple analytical model and verified with numerical simulations in quantitative agreement with experiment. In a proof-of-concept experiment, we use such a detector to measure the high-frequency phonons generated by another, electrically decoupled superconducting island, with a measurable signal resulting from less than 10 fW of dissipated power.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/6fb64a8e-2c5e-4bd4-82d1-4f7ecbf70898
- author
- Mannila, E. T. ; Maisi, V. F. LU and Pekola, J. P.
- organization
- publishing date
- 2021-10-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 127
- issue
- 14
- article number
- 147001
- publisher
- American Physical Society
- external identifiers
-
- scopus:85119089652
- pmid:34652173
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.127.147001
- language
- English
- LU publication?
- yes
- id
- 6fb64a8e-2c5e-4bd4-82d1-4f7ecbf70898
- date added to LUP
- 2021-11-30 23:35:25
- date last changed
- 2024-06-15 21:48:22
@article{6fb64a8e-2c5e-4bd4-82d1-4f7ecbf70898,
abstract = {{<p>We propose and experimentally demonstrate a self-calibrating detector of Cooper pair depairing in a superconductor based on a mesoscopic superconducting island coupled to normal metal leads. On average, exactly one electron passes through the device per broken Cooper pair, independent of the absorber volume, device, or material parameters. The device operation is explained by a simple analytical model and verified with numerical simulations in quantitative agreement with experiment. In a proof-of-concept experiment, we use such a detector to measure the high-frequency phonons generated by another, electrically decoupled superconducting island, with a measurable signal resulting from less than 10 fW of dissipated power.</p>}},
author = {{Mannila, E. T. and Maisi, V. F. and Pekola, J. P.}},
issn = {{1079-7114}},
language = {{eng}},
month = {{10}},
number = {{14}},
publisher = {{American Physical Society}},
series = {{Physical Review Letters}},
title = {{Self-Calibrating Superconducting Pair-Breaking Detector}},
url = {{http://dx.doi.org/10.1103/PhysRevLett.127.147001}},
doi = {{10.1103/PhysRevLett.127.147001}},
volume = {{127}},
year = {{2021}},
}