Quantum phase for a system with an arbitrary discrete energy spectrum
Authorized Users Only
MetadataShow full item record
Positive operator valued measures representing phase observables for systems with arbitrary discrete, possibly degenerate, spectra are constructed. The general construction is presented and discussed using illustrative examples. The phase POVM shows intricate discontinuous dependence on the eigenfrequencies. Special discussion is devoted to the systems with degenerate energy spectrum, in which case the phase observable is nonunique. We present arguments that can be used to reduces this nonuniqueness.
Source:Physical Review A, 2013, 88, 2
- Modeling and Numerical Simulations of Complex Many-Body Systems (RS-171017)
- A new approach to foundational problems of quantum mechanics related to applications in quantum technologies and interpretations of signals of various origins (RS-171028)
- The nonlinear dynamics of localized selforganized structures in plasmas, nano-composite meterials, liquid and fotonic crystals, and ultracold condensates (RS-171006)