Yang, Huan and Miao, Haixing and Chen, Yanbei (2011) Reveal non-Markovianity of open quantum systems via local operations. , Pasadena, CA. (Submitted) https://resolver.caltech.edu/CaltechAUTHORS:20121102-100208411
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Abstract
Non-Markovianity, as an important feature of general open quantum systems, is usually difficult to quantify with limited knowledge of how the plant that we are interested in interacts with its environment-the bath. It often happens that the reduced dynamics of the plant attached to a non-Markovian bath becomes indistinguishable from the one with a Markovian bath, if we left the entire system freely evolve. Here we show that non-Markovianity can be revealed via applying local unitary operations on the plant-they will influence the plant evolution at later times due to memory of the bath. This not only provides a new criterion for non-Markovianity, but also sheds light on protecting and recovering quantum coherence in non-Markovian systems, which will be useful for quantum-information processing.
Item Type: | Report or Paper (Discussion Paper) | ||||||||||||||
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Additional Information: | We thank S.L. Danilishin, F.Ya, Kahlili and other colleagues in the LIGO MQM group for fruitful discussions. This work has been supported by NSF grants PHY-0555406, PHY-0653653, PHY-0601459, PHY-0956189, PHY-1068881, as well as the David and Barbara Groce startup fund at Caltech. | ||||||||||||||
Group: | UNSPECIFIED, Institute for Quantum Information and Matter, TAPIR | ||||||||||||||
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Record Number: | CaltechAUTHORS:20121102-100208411 | ||||||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20121102-100208411 | ||||||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||
ID Code: | 35259 | ||||||||||||||
Collection: | CaltechAUTHORS | ||||||||||||||
Deposited By: | Tony Diaz | ||||||||||||||
Deposited On: | 03 Nov 2012 05:02 | ||||||||||||||
Last Modified: | 04 Jun 2020 10:14 |
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