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- Title
Quantum measurement and the Aharonov-Bohm effect with superposed magnetic fluxes.
- Authors
Bradonjić, Kaća; Swain, John
- Abstract
We consider the magnetic flux in a quantum mechanical superposition of two values and find that the Aharonov-Bohm effect interference pattern contains information about the nature of the superposition, allowing information about the state of the flux to be extracted without disturbance. The information is obtained without transfer of energy or momentum and by accumulated nonlocal interactions of the vector potential $$\varvec{A}$$ with many charged particles forming the interference pattern, rather than with a single particle. We suggest an experimental test using already experimentally realized superposed currents in a superconducting ring and discuss broader implications.
- Subjects
QUANTUM measurement; MAGNETIC flux; AHARONOV-Bohm effect; QUANTUM mechanics; SUPERPOSITION principle (Physics); MOMENTUM (Mechanics); ENERGY transfer
- Publication
Quantum Information Processing, 2014, Vol 13, Issue 2, p323
- ISSN
1570-0755
- Publication type
Article
- DOI
10.1007/s11128-013-0652-3