Experimental replication of single-qubit quantum phase gates
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33159745" target="_blank" >RIV/61989592:15310/16:33159745 - isvavai.cz</a>
Result on the web
<a href="http://journals.aps.org/pra/pdf/10.1103/PhysRevA.93.052318" target="_blank" >http://journals.aps.org/pra/pdf/10.1103/PhysRevA.93.052318</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.93.052318" target="_blank" >10.1103/PhysRevA.93.052318</a>
Alternative languages
Result language
angličtina
Original language name
Experimental replication of single-qubit quantum phase gates
Original language description
We experimentally demonstrate the underlying physical mechanism of the recently proposed protocol for superreplication of quantum phase gates [W. Dur, P. Sekatski, and M. Skotiniotis, Phys. Rev. Lett. 114, 120503 (2015)], which allows producing up to N-2 high-fidelity replicas from N input copies in the limit of large N. Our implementation of 1 -> 2 replication of the single-qubit phase gates is based on linear optics and qubits encoded into states of single photons. We employ the quantum Toffoli gate to imprint information about the structure of an input two-qubit state onto an auxiliary qubit, apply the replicated operation to the auxiliary qubit, and then disentangle the auxiliary qubit from the other qubits by a suitable quantum measurement. We characterize the replication protocol by full quantum process tomography and observe good agreement of the experimental results with theory.
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
<a href="/en/project/GA13-20319S" target="_blank" >GA13-20319S: Optical quantum information processing driven by weak quantum measurements</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2016
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 A
ISSN
2469-9926
e-ISSN
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Volume of the periodical
93
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
"052318-1"-"052318-7"
UT code for WoS article
000376239900005
EID of the result in the Scopus database
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