Passive On-Chip Superconducting Circulator Using a Ring of Tunnel Junctions

Muller, C, Guan, S, Vogt, N, Cole, J and Stace, T 2018, 'Passive On-Chip Superconducting Circulator Using a Ring of Tunnel Junctions', Physical Review Letters, vol. 120, no. 21, pp. 1-6.

Document type: Journal Article
Collection: Journal Articles

Title Passive On-Chip Superconducting Circulator Using a Ring of Tunnel Junctions
Author(s) Muller, C
Guan, S
Vogt, N
Cole, J
Stace, T
Year 2018
Journal name Physical Review Letters
Volume number 120
Issue number 21
Start page 1
End page 6
Total pages 6
Publisher American Physical Society
Abstract We present the design of a passive, on-chip microwave circulator based on a ring of superconducting tunnel junctions. We investigate two distinct physical realizations, based on Josephson junctions (JJs) or quantum phase slip elements (QPS), with microwave ports coupled either capacitively (JJ) or inductively (QPS) to the ring structure. A constant bias applied to the center of the ring provides an effective symmetry breaking field, and no microwave or rf bias is required. We show that this design offers high isolation, robustness against fabrication imperfections and bias fluctuations, and a bandwidth in excess of 500 MHz for realistic device parameters.
Subject Electronic and Magnetic Properties of Condensed Matter; Superconductivity
Quantum Optics
Quantum Information, Computation and Communication
Keyword(s) Quantum Phase-Slip
DOI - identifier 10.1103/PhysRevLett.120.213602
Copyright notice © 2018 American Physical Society
ISSN 0031-9007
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