Abstract
We discuss the behaviour of a superconducting weak link ring coupled to a radio frequency tank circuit. We show that with the weak link acting quantum mechanically to connect different winding number states of the ring together two limiting regimes of behaviour are discernible. In the first, SQUID (Superconducting Quantum Interference Device) magnetometer, limit nearest neighbour winding number transitions dominate. In the second limit, which forms the basis for a quantum voltmeter conjugate to the SQUID magnetometer, all possible winding number transitions need to be considered.
Preview
Unable to display preview. Download preview PDF.
References
W.L. Goodman, W.D. Willis, D.A. Vincent and B.S. Deaver, Phys. Rev. B4, 1530 (1971).
B.D. Josephson, Phys. Lett. 1, 251 (1962).
R.J. Prance, A.P. Long, T.D. Clark, A. Widom, J.E. Mutton, J. Sacco, M.W. Potts, G. Megaloudis and F. Goodall, Nature 289, 543 (1981).
R.J. Prance, J.E. Mutton, H. Prance, T.D. Clark, A. Widom and G. Megaloudis, Helv. Phys. Acta 56, 789 (1983).
J. Callaway, Quantum Theory of the Solid State (Academic Press 1976), p. 681; see also P. G. de Gennes, Superconductivity of Metals and Alloys (Benjamin, New York 1966), p. 118.
R.J. Prance, T.D. Clark, J.E. Mutton, H. Prance, T.P. Spiller, and R. Nest, Phys. Lett. 107A, 133 (1985).
T.P. Spiller, J.E., Mutton, H. Prance, R.J. Prance, T.D. Clark and R. Nest, Quantum Mechanical Flux Band Dynamics of a Superconducting Weak Link Constriction Ring, in preparation.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1985 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH
About this chapter
Cite this chapter
Prance, H., Prance, R.J., Mutton, J.E., Spiller, T.P., Clark, T.D., Nest, R. (1985). Quantum mechanical duality in SQUID rings and the design and operation of a quantum mechanical voltmeter. In: Grosse, P. (eds) Festkörperprobleme 25. Advances in Solid State Physics, vol 25. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0108166
Download citation
DOI: https://doi.org/10.1007/BFb0108166
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-528-08031-0
Online ISBN: 978-3-540-75361-2
eBook Packages: Springer Book Archive