Distance between quantum states in the presence of initial qubit-environment correlations: A comparative study
Journal Article
·
· Physical Review. A
- Institute of Physics, University of Silesia, 40-007 Katowice (Poland)
The time evolution of the trace distance between two states of an open quantum system may increase due to initial system-environment correlations, thus exhibiting a breakdown of distance contractivity of the reduced dynamics. We analyze how the time evolution of the distance depends on the chosen distance measure. Here we elucidate the behavior of the trace distance, the Hilbert-Schmidt distance, the Bures distance, the Hellinger distance, and the quantum Jensen-Shannon divergence for two system-environment setups, namely a qubit bilinearly coupled to an infinite and a finite-size environment with the latter composed of harmonic oscillators.
- OSTI ID:
- 22068641
- Journal Information:
- Physical Review. A, Vol. 84, Issue 3; Other Information: (c) 2011 American Institute of Physics; Country of input: Syrian Arab Republic; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
Similar Records
Properties of classical and quantum Jensen-Shannon divergence
Geometric comparison of popular mixture-model distances.
Operational distance and fidelity for quantum channels
Journal Article
·
Fri May 15 00:00:00 EDT 2009
· Physical Review. A
·
OSTI ID:22068641
Geometric comparison of popular mixture-model distances.
Conference
·
Wed Sep 01 00:00:00 EDT 2010
·
OSTI ID:22068641
Operational distance and fidelity for quantum channels
Journal Article
·
Wed Jun 01 00:00:00 EDT 2005
· Journal of Mathematical Physics
·
OSTI ID:22068641