Published January 23, 2009
| Version v1
Journal article
Experimental Demonstration of the Stability of Berry's Phase for a Spin-1/2 Particle
Creators
- 1. Institut Laue Langevin, Boite Postale 156, F-38042 Grenoble Cedex 9 (France)
- 2. Department of Physics, ETH Zurich, CH-8093 Zuerich (Switzerland)
- 3. Atominstitut der Oesterreichischen Universitaeten, Stadionallee 2, A-1020 Vienna (Austria)
- 4. Physikalisches Institut, Philosophenweg 12, 69120 Heidelberg (Germany)
Description
The geometric phase has been proposed as a candidate for noise resilient coherent manipulation of fragile quantum systems. Since it is determined only by the path of the quantum state, the presence of noise fluctuations affects the geometric phase in a different way than the dynamical phase. We have experimentally tested the robustness of Berry's geometric phase for spin-1/2 particles in a cyclically varying magnetic field. Using trapped polarized ultracold neutrons, it is demonstrated that the geometric phase contributions to dephasing due to adiabatic field fluctuations vanish for long evolution times
Additional details
Identifiers
- DOI
- 10.1103/PhysRevLett.102.030404;
- arXiv
- arXiv:0812.3757v1;
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 102
- Journal Issue
- 3
- Journal Page Range
- p. 030404-030404.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40054330
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- EVOLUTION; FLUCTUATIONS; MAGNETIC FIELDS; NOISE; SPIN; STABILITY; TRAPPING; ULTRACOLD NEUTRONS
- Descriptors DEC
- ANGULAR MOMENTUM; BARYONS; COLD NEUTRONS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; NEUTRONS; NUCLEONS; PARTICLE PROPERTIES; VARIATIONS
Optional Information
- Notes
- (c) 2009 The American Physical Society