Optimal reordering of measurements for photonic quantum tomography

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73589291" target="_blank" >RIV/61989592:15310/18:73589291 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.osapublishing.org/DirectPDFAccess/096E2BB0-F7EB-953E-F7692B10611E1C51_402815/oe-26-25-32878.pdf?da=1&id=402815&seq=0&mobile=no" target="_blank" >https://www.osapublishing.org/DirectPDFAccess/096E2BB0-F7EB-953E-F7692B10611E1C51_402815/oe-26-25-32878.pdf?da=1&id=402815&seq=0&mobile=no</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/OE.26.032878" target="_blank" >10.1364/OE.26.032878</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Optimal reordering of measurements for photonic quantum tomography

Popis výsledku v původním jazyce

Quantum tomography is an essential method of the photonic technology toolbox and is routinely used for evaluation of experimentally prepared states of light and characterization of devices transforming such states. The tomography procedure consists of many different sequentially performed measurements. We present considerable tomography speedup by optimally arranging the individual constituent measurements, which is equivalent to solving an instance of the traveling salesman problem. As an example, we obtain solutions for photonic systems of up to five qubits, and conclude that already for systems of three or more qubits, the total duration of the tomography procedure can be halved. The reported speedup has been verified experimentally for quantum state tomography and also for full quantum process characterization up to six qubits, without resorting to any complexity reduction or simplification of the system of interest. Our approach is versatile and reduces the time of an input-output characterization of optical devices and various scattering processes as well.

Název v anglickém jazyce

Optimal reordering of measurements for photonic quantum tomography

Popis výsledku anglicky

Quantum tomography is an essential method of the photonic technology toolbox and is routinely used for evaluation of experimentally prepared states of light and characterization of devices transforming such states. The tomography procedure consists of many different sequentially performed measurements. We present considerable tomography speedup by optimally arranging the individual constituent measurements, which is equivalent to solving an instance of the traveling salesman problem. As an example, we obtain solutions for photonic systems of up to five qubits, and conclude that already for systems of three or more qubits, the total duration of the tomography procedure can be halved. The reported speedup has been verified experimentally for quantum state tomography and also for full quantum process characterization up to six qubits, without resorting to any complexity reduction or simplification of the system of interest. Our approach is versatile and reduces the time of an input-output characterization of optical devices and various scattering processes as well.

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

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

OPTICS EXPRESS

ISSN

1094-4087

e-ISSN

—

Svazek periodika

26

Číslo periodika v rámci svazku

25

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

32878-32887

Kód UT WoS článku

000452612200044

EID výsledku v databázi Scopus

2-s2.0-85058176854