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Quantum Zeno effect of general quantum operations.
- Source :
-
Physical Review A: Atomic, Molecular & Optical Physics . Oct2013, Vol. 88 Issue 4-A, p1-9. 9p. - Publication Year :
- 2013
-
Abstract
- In this paper, we show that the quantum Zeno effect can occur for generalized quantum measurements or operations. As a consequence of frequently performing nonselective measurements (or trace-preserving completely positive maps), the evolution of a certain measurement-invariant state is governed by an effective Hamiltonian defined by the measurement (or map) and the free-evolution Hamiltonian. For selective measurements, the state may change randomly with time according to measurement outcomes, but some physical quantities (operators) still evolve according to the effective Hamiltonian. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10502947
- Volume :
- 88
- Issue :
- 4-A
- Database :
- Academic Search Index
- Journal :
- Physical Review A: Atomic, Molecular & Optical Physics
- Publication Type :
- Periodical
- Accession number :
- 92523019
- Full Text :
- https://doi.org/10.1103/PhysRevA.88.042321