Quantum frequency interferometry: with applications ranging from gravitational wave detection to dark matter searches
Quantum frequency interferometry: with applications ranging from gravitational wave detection to dark matter searches
We introduce a quantum interferometric scheme that uses states that are sharp in frequency and delocalized in position. The states are frequency modes of a quantum field that is trapped at all times in a finite volume potential, such as a small box potential. This allows for significant miniaturization of interferometric devices. Since the modes are in contact at all times, it is possible to estimate physical parameters of global multi-mode channels. As an example, we introduce a three-mode scheme and calculate precision bounds in the estimation of parameters of two-mode Gaussian channels. This scheme can be implemented in several systems, including superconducting circuits, cavity-QED and cold atoms. We consider a concrete implementation using the ground state and two phononic modes of a trapped Bose-Einstein condensate. We apply this to show that frequency interferometry can improve the sensitivity of phononic gravitational waves detectors by several orders of magnitude, even in the case that squeezing is much smaller than assumed previously and that the system suffers from short phononic lifetimes. Other applications range from magnetometry, gravimetry and gradiometry to dark matter/energy searches.
cond-mat.quant-gas, gr-qc, quant-ph
Howl, Richard
0856300a-849c-41af-b124-65947cca1cad
Fuentes, Ivette
6281afeb-b1bc-44fc-824c-265b57be9794
1 March 2023
Howl, Richard
0856300a-849c-41af-b124-65947cca1cad
Fuentes, Ivette
6281afeb-b1bc-44fc-824c-265b57be9794
Howl, Richard and Fuentes, Ivette
(2023)
Quantum frequency interferometry: with applications ranging from gravitational wave detection to dark matter searches.
AVS Quantum Science, 5 (1), [014402].
(doi:10.1116/5.0084821).
Abstract
We introduce a quantum interferometric scheme that uses states that are sharp in frequency and delocalized in position. The states are frequency modes of a quantum field that is trapped at all times in a finite volume potential, such as a small box potential. This allows for significant miniaturization of interferometric devices. Since the modes are in contact at all times, it is possible to estimate physical parameters of global multi-mode channels. As an example, we introduce a three-mode scheme and calculate precision bounds in the estimation of parameters of two-mode Gaussian channels. This scheme can be implemented in several systems, including superconducting circuits, cavity-QED and cold atoms. We consider a concrete implementation using the ground state and two phononic modes of a trapped Bose-Einstein condensate. We apply this to show that frequency interferometry can improve the sensitivity of phononic gravitational waves detectors by several orders of magnitude, even in the case that squeezing is much smaller than assumed previously and that the system suffers from short phononic lifetimes. Other applications range from magnetometry, gravimetry and gradiometry to dark matter/energy searches.
Text
2103.02618v1
- Accepted Manuscript
More information
Accepted/In Press date: 6 December 2022
e-pub ahead of print date: 23 January 2023
Published date: 1 March 2023
Additional Information:
Funding Information:
We thank Paul Juschitz, Jan Kohlrus, Daniel Goldwater, Tupac Bravo, Daniel Hartley, and Dennis Rätzel for useful discussions and comments. R.H. and I.F. would like to acknowledge that this project was made possible through the support of a donation by John Moussouris and the grant “Leaps in cosmology: gravitational wave detection with quantum systems” (No. 58745) from the John Templeton Foundation. R.H. would also like to acknowledge the support of the ID 61466 grant from the John Templeton Foundation, as part of the QISS project. The opinions expressed in this publication are those of the authors and do not necessarily reflect the views of the John Templeton Foundation.
Publisher Copyright:
© 2023 Author(s).
Keywords:
cond-mat.quant-gas, gr-qc, quant-ph
Identifiers
Local EPrints ID: 475205
URI: http://eprints.soton.ac.uk/id/eprint/475205
ISSN: 2639-0213
PURE UUID: b9a06f7d-3007-4435-97f2-d5da5651ebd6
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Date deposited: 14 Mar 2023 17:34
Last modified: 17 Mar 2024 01:20
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Contributors
Author:
Richard Howl
Author:
Ivette Fuentes
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