QUANTUM STATE IDENTIFICATION OF QUTRITS VIA A NONLINEAR PROTOCOL

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F18%3A00327919" target="_blank" >RIV/68407700:21340/18:00327919 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10946-018-9740-2" target="_blank" >http://dx.doi.org/10.1007/s10946-018-9740-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10946-018-9740-2" target="_blank" >10.1007/s10946-018-9740-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

QUANTUM STATE IDENTIFICATION OF QUTRITS VIA A NONLINEAR PROTOCOL

Popis výsledku v původním jazyce

We propose a probabilistic quantum protocol to realize a nonlinear transformation of qutrit states, which by iterative applications on ensembles can be used to distinguish two types of pure states. The protocol involves single-qutrit and two-qutrit unitary operations as well as post-selection according to the results obtained in intermediate measurements. We utilize the nonlinear transformation in an algorithm to identify a quantum state provided it belongs to an arbitrary known finite set. The algorithm is based on dividing the known set of states into two appropriately designed subsets, which can be distinguished by the nonlinear protocol. In most cases, this is accompanied by the application of some properly defined physical (unitary) operation on the unknown state. Then, applying the nonlinear protocol, one can decide which of the two subsets the unknown state belongs to, thus reducing the number of possible candidates. By iteratively continuing this procedure until a single possible candidate remains, one can identify the unknown state.

Název v anglickém jazyce

QUANTUM STATE IDENTIFICATION OF QUTRITS VIA A NONLINEAR PROTOCOL

Popis výsledku anglicky

We propose a probabilistic quantum protocol to realize a nonlinear transformation of qutrit states, which by iterative applications on ensembles can be used to distinguish two types of pure states. The protocol involves single-qutrit and two-qutrit unitary operations as well as post-selection according to the results obtained in intermediate measurements. We utilize the nonlinear transformation in an algorithm to identify a quantum state provided it belongs to an arbitrary known finite set. The algorithm is based on dividing the known set of states into two appropriately designed subsets, which can be distinguished by the nonlinear protocol. In most cases, this is accompanied by the application of some properly defined physical (unitary) operation on the unknown state. Then, applying the nonlinear protocol, one can decide which of the two subsets the unknown state belongs to, thus reducing the number of possible candidates. By iteratively continuing this procedure until a single possible candidate remains, one can identify the unknown state.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Russian Laser Research

ISSN

1071-2836

e-ISSN

1573-8760

Svazek periodika

39

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

456-464

Kód UT WoS článku

000450488400005

EID výsledku v databázi Scopus

2-s2.0-85055988153