PT-symmetric slowing down of decoherence
| dc.contributor.author | Gardas, Bartłomiej | |
| dc.contributor.author | Deffner, Sebastian | |
| dc.contributor.author | Saxena, Avadh | |
| dc.date.accessioned | 2020-08-13T16:22:25Z | |
| dc.date.available | 2020-08-13T16:22:25Z | |
| dc.date.issued | 2016-10-27 | |
| dc.description.abstract | We investigate PT-symmetric quantum systems ultraweakly coupled to an environment. We find that such open systems evolve under PT-symmetric, purely dephasing and unital dynamics. The dynamical map describing the evolution is then determined explicitly using a quantum canonical transformation. Furthermore, we provide an explanation of why PT-symmetric dephasing-type interactions lead to a critical slowing down of decoherence. This effect is further exemplified with an experimentally relevant system, a PT-symmetric qubit easily realizable, e.g., in optical or microcavity experiments. | en_US |
| dc.description.sponsorship | We thank Wojciech H. Zurek for stimulating discussions. This work was supported by the Polish Ministry of Science and Higher Education under project Mobility Plus 1060/MOB/2013/0 (B.G.); S.D. acknowledges financial support from the U.S. Department of Energy through a LANL Director’s Funded Fellowship. | en_US |
| dc.description.uri | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.94.040101 | en_US |
| dc.format.extent | 5 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m253zn-ea2l | |
| dc.identifier.citation | Bartłomiej Gardas, Sebastian Deffner, and Avadh Saxena, Phys. Rev. A 94, 040101(R) (2016), DOI:https://doi.org/10.1103/PhysRevA.94.040101 | en_US |
| dc.identifier.uri | https://doi.org/10.1103/PhysRevA.94.040101 | |
| dc.identifier.uri | http://hdl.handle.net/11603/19420 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | American Physical Society (APS) | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Physics Department Collection | |
| dc.relation.ispartof | UMBC Joint Center for Earth Systems Technology (JCET) | |
| dc.relation.ispartof | UMBC Faculty Collection | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | ©2016 American Physical Society | |
| dc.title | PT-symmetric slowing down of decoherence | en_US |
| dc.type | Text | en_US |