Qubit-environment entanglement in time-dependent pure dephasing

Kód výsledku v 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>

Nalezeny alternativní kódy

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

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Qubit-environment entanglement in time-dependent pure dephasing

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

Qubit-environment entanglement in time-dependent pure dephasing

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Physical Review A

ISSN

2469-9926

e-ISSN

2469-9934

Svazek periodika

109

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

032412

Kód UT WoS článku

001198610700005

EID výsledku v databázi Scopus

2-s2.0-85187544421