Microwave Induced Quantum Transitions in a SQUID Ring

Whiteman, R, Clark, T D, Prance, R J, Prance, H, Schollmann, V, Ralph, J F, Everitta, M and Digginsa, J (1998) Microwave Induced Quantum Transitions in a SQUID Ring. Journal of Modern Optics, 45 (6). pp. 1175-1184. ISSN 0950-0340

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Abstract

In this paper we consider the interaction of a quantum-mechanical superconducting quantum interference device (SQUID) with a classical monochromatic electromagnetic (EM) field. We solve the time-dependent Schrödinger equation for the SQUID ring in this EM field. We demonstrate that non-perturbative transitions between the low-lying states of the ring, due to coherent multiphoton absorption processes, dominate, even when the single-photon energy is small compared with the energy separation between these states. We present experimental data on small-capacitance SQUID rings, interacting with microwave fields, which point to the existence of such non-perturbative transitions.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Robert Prance
Date Deposited: 06 Feb 2012 19:41
Last Modified: 24 Jun 2015 12:24
URI: http://sro.sussex.ac.uk/id/eprint/21779
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