6533b834fe1ef96bd129ce06
RESEARCH PRODUCT
Detection of Geometric Phases in Superconducting Nanocircuits
Vlatko VedralG. Massimo PalmaJens SiewertRosario FazioGiuseppe Falcisubject
SuperconductivityJosephson effectPhysicsQuantum PhysicsMultidisciplinaryCondensed Matter - Mesoscale and Nanoscale PhysicsQuantum dynamicsFOS: Physical sciencesElectronPhase factorQuantum dotQuantum mechanicsCondensed Matter::SuperconductivityMesoscale and Nanoscale Physics (cond-mat.mes-hall)Quantum Physics (quant-ph)Adiabatic processQuantum computerdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-09-01 |