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International Journal of Theoretical Physics

A Macroscopic Device for Quantum Computation

Diederik Aerts, Ellie D’Hondt, Bart D’Hooghe, Marek Czachor, Jeroen Dehaene, Bart De Moor

Published Aug 23, 2007• 0 citations
Publisher
DOI
10.1007/s10773-007-9507-y

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Electrons in a superconductor form Cooper pairs and thus condense into a ground state which can be described by a macroscopic quantum wavefunction. The phase of the wavefunction represents a collective movement of millions of Cooper pairs. Using devices based on Josephson tunnel junctions we are able to control and detect the phase and number of Cooper pairs in a superconductor. Josephson devices are therefore excellent systems for demonstrating macroscopic quantum phenomena. We present a short review of the macroscopic quantum phenomena in superconducting Josephson devices, as well as their applications and prospects in quantum computationl.