Optimal reordering of measurements for photonic quantum tomography

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Optimal reordering of measurements for photonic quantum tomography
Original language description
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.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10306 - Optics (including laser optics and quantum optics)

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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