Sisyphus effects in a microwave-excited flux-qubit resonator system

Skinner, J C, Prance, H, Stiffell, P B and Prance, R J (2010) Sisyphus effects in a microwave-excited flux-qubit resonator system. Physical Review Letters, 105 (25). pp. 257002-1. ISSN 0031-9007

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Abstract

Sisyphus amplification, familiar from quantum optics, has recently been reported as a mechanism to explain the enhanced quality factor of a classical resonant (tank) circuit coupled to a superconducting flux qubit. Here we present data from a coupled system, comprising a quantum mechanical rf SQUID (flux qubit) reactively monitored by an ultrahigh quality factor noise driven rf resonator and excited by microwaves. The system exhibits enhancement of the tank-circuit resonance, bringing it significantly closer (within 1%) to the lasing limit, than previously reported results. 2010 The American Physical Society.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Jacob Skinner
Date Deposited: 06 Feb 2012 18:25
Last Modified: 10 Mar 2017 01:12
URI: http://sro.sussex.ac.uk/id/eprint/16210

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