Detection of Geometric Phases in Superconducting Nanocircuits
Abstract
When a quantum mechanical system undergoes an adiabatic cyclic evolution it acquires a geometrical phase factor in addition to the dynamical one. This effect has been demonstrated in a variety of microscopic systems. Advances in nanotechnologies should enable the laws of quantum dynamics to be tested at the macroscopic level, by providing controllable artificial two-level systems (for example, in quantum dots and superconducting devices). Here we propose an experimental method to detect geometric phases in a superconducting device. The setup is a Josephson junction nanocircuit consisting of a superconducting electron box. We discuss how interferometry based on geometrical phases may be realized, and show how the effect may applied to the design of gates for quantum computation.
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Cite
@article{arxiv.cond-mat/0011040,
title = {Detection of Geometric Phases in Superconducting Nanocircuits},
author = {Giuseppe Falci and Rosario Fazio and G. Massimo Palma and Jens Siewert and Vlatko Vedral},
journal= {arXiv preprint arXiv:cond-mat/0011040},
year = {2009}
}
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12 pages