Qubit-environment entanglement in time-dependent pure dephasing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00585721" target="_blank" >RIV/68378271:_____/24:00585721 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/24:73624584 RIV/00216208:11320/24:10483746

Result on the web

<a href="https://doi.org/10.1103/PhysRevA.109.032412" target="_blank" >https://doi.org/10.1103/PhysRevA.109.032412</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.109.032412" target="_blank" >10.1103/PhysRevA.109.032412</a>

Result language

angličtina

Original language name

Qubit-environment entanglement in time-dependent pure dephasing

Original language description

We show that the methods for quantification of system-environment entanglement, recently developed for interactions that lead to pure decoherence, can be generalized to time-dependent Hamiltonians. This includes the criteria of separability, the entanglement measure, and methods of detection of entanglement by operations and measurements on the system. We use these methods to study the nature of the decoherence of a qubit-oscillator system. Qubit-oscillator entanglement is essential for developing bosonic quantum technology with quantum non-Gaussian states and its applications in quantum sensing and computing. The dominating bosonic platforms are based on time-dependent gates that use entanglement to achieve new quantum sensors and quantum error correction. The steplike time dependence of the Hamiltonian that is taken into account allows us to capture the complex interplay between classical and quantum correlations, which could not be replicated in time-independent scenarios.n

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review A

ISSN

2469-9926

e-ISSN

2469-9934

Volume of the periodical

109

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

032412

UT code for WoS article

001198610700005

EID of the result in the Scopus database

2-s2.0-85187544421