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Zel’dovich amplification in a superconducting circuit

Zel’dovich amplification in a superconducting circuit
Zel’dovich amplification in a superconducting circuit
Zel’dovich proposed that electromagnetic (EM) waves with angular momentum reflected from arotating metallic, lossy cylinder will be amplified. However, we are still lacking a direct experimentalEM-wave verification of this fifty-year old prediction due to the challenging conditions in which thephenomenon manifests itself: the mechanical rotation frequency of the cylinder must be comparablewith the EM oscillation frequency. Here we propose an approach to meet this condition and performthe first experiment of Zel’dovich amplification with existing superconducting circuit technology.We design a superconducting circuit with low frequency EM modes that couple through free-spaceto a magnetically levitated and spinning micro-sphere placed at the center of the circuit. Wetheoretically estimate the circuit EM mode gain and show that rotation of the micro-sphere can leadto experimentally observable amplification, thus paving the way for the first EM-field experimentaldemonstration of Zel’dovich amplification.
1079-7114
Braidotti, Maria Chiara
6b3ddc8d-7584-423b-ad71-4a9f6712a440
Vinante, Andrea
f023d600-0537-41c4-b307-bf9cdfc1f56c
Gasbarri, Giulio
1f6df418-5a22-4ec4-b24e-68aa10e0a684
Faccio, Daniele
6bcdf9b3-ee18-4227-9daa-054e6912ab7c
Ulbricht, Hendrik
5060dd43-2dc1-47f8-9339-c1a26719527d
Braidotti, Maria Chiara
6b3ddc8d-7584-423b-ad71-4a9f6712a440
Vinante, Andrea
f023d600-0537-41c4-b307-bf9cdfc1f56c
Gasbarri, Giulio
1f6df418-5a22-4ec4-b24e-68aa10e0a684
Faccio, Daniele
6bcdf9b3-ee18-4227-9daa-054e6912ab7c
Ulbricht, Hendrik
5060dd43-2dc1-47f8-9339-c1a26719527d

Braidotti, Maria Chiara, Vinante, Andrea, Gasbarri, Giulio, Faccio, Daniele and Ulbricht, Hendrik (2020) Zel’dovich amplification in a superconducting circuit. Physical Review Letters, 125 (140801), [140801]. (doi:10.1103/PhysRevLett.125.140801).

Record type: Article

Abstract

Zel’dovich proposed that electromagnetic (EM) waves with angular momentum reflected from arotating metallic, lossy cylinder will be amplified. However, we are still lacking a direct experimentalEM-wave verification of this fifty-year old prediction due to the challenging conditions in which thephenomenon manifests itself: the mechanical rotation frequency of the cylinder must be comparablewith the EM oscillation frequency. Here we propose an approach to meet this condition and performthe first experiment of Zel’dovich amplification with existing superconducting circuit technology.We design a superconducting circuit with low frequency EM modes that couple through free-spaceto a magnetically levitated and spinning micro-sphere placed at the center of the circuit. Wetheoretically estimate the circuit EM mode gain and show that rotation of the micro-sphere can leadto experimentally observable amplification, thus paving the way for the first EM-field experimentaldemonstration of Zel’dovich amplification.

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Zel’dovich amplification in a superconducting circuit - Accepted Manuscript
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More information

Accepted/In Press date: 19 August 2020
e-pub ahead of print date: 2 October 2020
Published date: 2 October 2020
Additional Information: ARXIV IS AM

Identifiers

Local EPrints ID: 443667
URI: http://eprints.soton.ac.uk/id/eprint/443667
ISSN: 1079-7114
PURE UUID: d84b2e5f-7dec-4aa5-b962-ff0c1c1a0169
ORCID for Andrea Vinante: ORCID iD orcid.org/0000-0002-9385-2127

Catalogue record

Date deposited: 08 Sep 2020 16:30
Last modified: 25 Nov 2021 18:38

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Contributors

Author: Maria Chiara Braidotti
Author: Andrea Vinante ORCID iD
Author: Giulio Gasbarri
Author: Daniele Faccio

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