Number of the records: 1
Purifying teleportation
- 1.
SYSNO ASEP 0577671 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Purifying teleportation Author(s) Roszak, Katarzyna (FZU-D) ORCID, RID
Korbicz, J. (PL)Number of authors 2 Article number 923 Source Title Quantum - ISSN 2521-327X
Roč. 7, Feb. (2023)Number of pages 16 s. Language eng - English Country AT - Austria Keywords teleportation ; decoherence ; open quantum systems ; quantum networks Subject RIV BE - Theoretical Physics OECD category Condensed matter physics (including formerly solid state physics, supercond.) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000935221900001 EID SCOPUS 85149637538 DOI https://doi.org/10.22331/q-2023-02-16-923 Annotation Coupling to the environment typically suppresses quantum properties of physical systems via decoherence. This is one of the main obstacles in practical implementations of quantum protocols. We show how decoherence can be reversed/suppressed during quantum teleportation in a network scenario. Treating the environment quantumly, we show that under a general pure dephasing coupling, performing a second teleportation can probabilistically reverse the decoherence effects if certain commutativity conditions hold. This effect is purely quantum and most pronounced for qubit systems, where in 25% of instances the decoherence can be reversed completely. We show the effect in a physical model of a qubit register coupled to a bosonic bath. We also analyze general d-dimensional systems, identifying all instances of decoherence suppression. Our results are proof-of-concept but will be relevant for the emerging field of quantum networks as teleportation is the key building block of network protocols.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://hdl.handle.net/11104/0346801
Number of the records: 1