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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Inducing nontrivial qubit coherence through a controlled dispersive environment

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Teixeira, Wallace S. [1] ; Nicacio, Fernando [2] ; Semiao, Fernando L. [1]
Total Authors: 3
[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil
[2] Univ Fed Rio de Janeiro, Inst Fis, Caixa Postal 68528, BR-21941972 Rio De Janeiro, RJ - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Physical Review A; v. 99, n. 3 MAR 5 2019.
Web of Science Citations: 0

We show how the dispersive regime of the Jaynes-Cummings model may serve as a valuable tool to the study of open quantum systems. We employ it in a bottom-up approach to build an environment that preserves qubit energy and induces varied coherence dynamics. We then present the derivation of a compact expression for the qubit coherence, applied here to the case of a finite number of thermally populated modes in the environment. We also discuss how the model parameters can be adjusted to facilitate the production of short-time monotonic decay (STMD) of the qubit coherence. Our results provide a broadly applicable platform for the investigation of energy-conserving open system dynamics which is fully within the grasp of current quantum technologies. (AU)

FAPESP's process: 17/09058-2 - Non-trivial open quantum dynamics motivated by quantum technologies
Grantee:Wallace Santos Teixeira
Support Opportunities: Scholarships in Brazil - Doctorate