Experimental test of robust quantum detection and restoration of a qubit

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33154707" target="_blank" >RIV/61989592:15310/15:33154707 - isvavai.cz</a>

Výsledek na webu

<a href="http://journals.aps.org/pra/abstract/10.1103/PhysRevA.92.012324#fulltext" target="_blank" >http://journals.aps.org/pra/abstract/10.1103/PhysRevA.92.012324#fulltext</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.92.012324" target="_blank" >10.1103/PhysRevA.92.012324</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental test of robust quantum detection and restoration of a qubit

Popis výsledku v původním jazyce

Macroscopic devices that probe and control elementary quantum systems are subjected to environment-induced decoherence and typically consist of a large number of particles that cannot be precisely controlled and individually accessed. These two factors limit the control of quantum systems by an open macroscopic device. Here, we investigate a faithful and robust implementation of specific elementary quantum operations under such conditions. We propose a procedure for quantum restoration of a single qubitthat is resilient to particle loss and decoherence of the macroscopic device and compare it with a similarly robust procedure for indirect quantum detection of the qubit state by measurement on the macroscopic device. Complementary to detection, the restoration recovers the original state of the system qubit by quantum erasing which decouples the system from the device. Perfect restoration is possible even if the particles of the device are only classically correlated. We experimentally

Název v anglickém jazyce

Experimental test of robust quantum detection and restoration of a qubit

Popis výsledku anglicky

Macroscopic devices that probe and control elementary quantum systems are subjected to environment-induced decoherence and typically consist of a large number of particles that cannot be precisely controlled and individually accessed. These two factors limit the control of quantum systems by an open macroscopic device. Here, we investigate a faithful and robust implementation of specific elementary quantum operations under such conditions. We propose a procedure for quantum restoration of a single qubitthat is resilient to particle loss and decoherence of the macroscopic device and compare it with a similarly robust procedure for indirect quantum detection of the qubit state by measurement on the macroscopic device. Complementary to detection, the restoration recovers the original state of the system qubit by quantum erasing which decouples the system from the device. Perfect restoration is possible even if the particles of the device are only classically correlated. We experimentally

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-20319S" target="_blank" >GA13-20319S: Optické kvantové zpracování informace pomocí slabých kvantových měření</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Physical Review A

ISSN

1050-2947

e-ISSN

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Svazek periodika

92

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

"012324-1"-"012324-5"

Kód UT WoS článku

000358252700006

EID výsledku v databázi Scopus

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