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Quantum speedup in memory environment.
- Source :
-
Physical Review A: Atomic, Molecular & Optical Physics . Jan2014, Vol. 89 Issue 1-A, p1-5. 5p. - Publication Year :
- 2014
-
Abstract
- Memory (non-Markovian) effect is found to be able to accelerate quantum evolution [S. Deffner and E. Lutz, Phys. Rev. Lett. 111, 010402 (2013)]. In this work, for an atom in a structured reservoir, we show that the mechanism for the speedup is not only related to non-Markovianity but also to the population of excited states under a given driving time. In other words, it is the competition between non-Markovianity and population of excited states that ultimately determines the acceleration of quantum evolution in memory environment. A potential experimental realization for verifying the above phenomena is discussed by using a nitrogen-vacancy (N-V) center embedded in a planar photonic crystal cavity (PCC) under the current experimental conditions. [ABSTRACT FROM AUTHOR]
- Subjects :
- *QUANTUM theory
*ATOMS
*NITROGEN
*PHOTONIC crystals
*MARKOV spectrum
*EXCITED states
Subjects
Details
- Language :
- English
- ISSN :
- 10502947
- Volume :
- 89
- Issue :
- 1-A
- Database :
- Academic Search Index
- Journal :
- Physical Review A: Atomic, Molecular & Optical Physics
- Publication Type :
- Periodical
- Accession number :
- 94722149
- Full Text :
- https://doi.org/10.1103/PhysRevA.89.012307