Experimental Implementation of Optimal Linear-Optical Controlled-Unitary Gates
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33154352" target="_blank" >RIV/61989592:15310/15:33154352 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/15:00449061
Result on the web
<a href="http://journals.aps.org/prl/pdf/10.1103/PhysRevLett.114.153602" target="_blank" >http://journals.aps.org/prl/pdf/10.1103/PhysRevLett.114.153602</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.114.153602" target="_blank" >10.1103/PhysRevLett.114.153602</a>
Alternative languages
Result language
angličtina
Original language name
Experimental Implementation of Optimal Linear-Optical Controlled-Unitary Gates
Original language description
We show that it is possible to reduce the number of two-qubit gates needed for the construction of an arbitrary controlled-unitary transformation by up to 2 times using a tunable controlled-PHASE gate. On the platform of linear optics, where two-qubit gates can only be achieved probabilistically, our method significantly reduces the amount of components and increases success probability of a two-qubit gate. The experimental implementation of our technique presented in this Letter for a controlled single-qubit unitary gate demonstrates that only one tunable controlled-PHASE gate is needed instead of two standard controlled-NOT gates. Thus, not only do we increase the success probability by about 1 order of magnitude (with the same resources), but also avoid the need for conducting quantum nondemolition measurement otherwise required to join two probabilistic gates. Subsequently, we generalize our method to a higher order, showing that n-times controlled gates can be optimized by replaci
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Result continuities
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)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Letters
ISSN
0031-9007
e-ISSN
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Volume of the periodical
114
Issue of the periodical within the volume
15
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
"153602-1"-"153602-5"
UT code for WoS article
000352990700004
EID of the result in the Scopus database
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