Hierarchy of quantum non-Gaussian conservative motion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F22%3A73613101" target="_blank" >RIV/61989592:15310/22:73613101 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.nature.com/articles/s42005-022-00910-6" target="_blank" >https://www.nature.com/articles/s42005-022-00910-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s42005-022-00910-6" target="_blank" >10.1038/s42005-022-00910-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hierarchy of quantum non-Gaussian conservative motion

Popis výsledku v původním jazyce

Mechanical quantum systems embedded in an external nonlinear potential currently offer the first deep excursion into quantum non-Gaussian motion. The Gaussian statistics of the motion of a linear mechanical quantum system, characterised by its mass and a linear-and-quadratic potential, possess a limited capacity to reduce noise in nonlinear variables. This limitation induces thresholds for noise reduction in nonlinear variables beyond which linear mechanical oscillators cannot pass. Squeezing below the thresholds for such variables is relevant for the implementation of nonlinear mechanical devices, such as sensors, processors or engines. First however, quantum non-Gaussian conservative motion must be identified in experiments with diverse nonlinear potentials. For this purpose, we provide sufficient criteria for quantum non-Gaussian motional states in conservative systems based on the observation of squeezing in nonlinear variables. We further extend these criteria to a hierarchy able to recognise the quantum non-Gaussian motion induced via diverse nonlinear potentials through their various capacities to produce nonlinear squeezing. Gaussian systems are useful for many quantum technologies but new applications will require control over nonlinear systems generating quantum non-Gaussian states. The authors present a method for the detection of quantum non-Gaussian states of mechanical particles which may be applied for future experiments in optomechanics and levitated nanoparticles in the quantum regime.

Název v anglickém jazyce

Hierarchy of quantum non-Gaussian conservative motion

Popis výsledku anglicky

Mechanical quantum systems embedded in an external nonlinear potential currently offer the first deep excursion into quantum non-Gaussian motion. The Gaussian statistics of the motion of a linear mechanical quantum system, characterised by its mass and a linear-and-quadratic potential, possess a limited capacity to reduce noise in nonlinear variables. This limitation induces thresholds for noise reduction in nonlinear variables beyond which linear mechanical oscillators cannot pass. Squeezing below the thresholds for such variables is relevant for the implementation of nonlinear mechanical devices, such as sensors, processors or engines. First however, quantum non-Gaussian conservative motion must be identified in experiments with diverse nonlinear potentials. For this purpose, we provide sufficient criteria for quantum non-Gaussian motional states in conservative systems based on the observation of squeezing in nonlinear variables. We further extend these criteria to a hierarchy able to recognise the quantum non-Gaussian motion induced via diverse nonlinear potentials through their various capacities to produce nonlinear squeezing. Gaussian systems are useful for many quantum technologies but new applications will require control over nonlinear systems generating quantum non-Gaussian states. The authors present a method for the detection of quantum non-Gaussian states of mechanical particles which may be applied for future experiments in optomechanics and levitated nanoparticles in the quantum regime.

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

<a href="/cs/project/GX21-13265X" target="_blank" >GX21-13265X: Kvantová ne-Gaussovská koherence</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Communications Physics

ISSN

2399-3650

e-ISSN

2399-3650

Svazek periodika

5

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

"128-1"-"128-7"

Kód UT WoS článku

000805596400004

EID výsledku v databázi Scopus

2-s2.0-85130937298