About: Increasing efficiency of a linear-optical quantum gate using electronic feed-forward

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We have successfully used fast electronic feed-forward to increase the probability of success of a linear optical implementation of a programmable phase gate from 25% to its theoretical limit of 50%. The feed-forward applies a conditional unitary operation, which changes the incorrect output states of the data qubit to the correct ones. The gate itself rotates an arbitrary quantum state of the data qubit around the z axis of the Bloch sphere with the angle of rotation being fully determined by the state of the program qubit. The gate implementation is based on fiber optics components. Qubits are encoded into spatial modes of single photons. The signal from the feed-forward detector is led directly to a phase modulator using only a passive voltage divider. We have verified the increase of the probability of success and characterized the gate operation by means of quantum process tomography. We have demonstrated that the use of feed-forward affects neither the process fidelity nor the output-state fidelities. We have successfully used fast electronic feed-forward to increase the probability of success of a linear optical implementation of a programmable phase gate from 25% to its theoretical limit of 50%. The feed-forward applies a conditional unitary operation, which changes the incorrect output states of the data qubit to the correct ones. The gate itself rotates an arbitrary quantum state of the data qubit around the z axis of the Bloch sphere with the angle of rotation being fully determined by the state of the program qubit. The gate implementation is based on fiber optics components. Qubits are encoded into spatial modes of single photons. The signal from the feed-forward detector is led directly to a phase modulator using only a passive voltage divider. We have verified the increase of the probability of success and characterized the gate operation by means of quantum process tomography. We have demonstrated that the use of feed-forward affects neither the process fidelity nor the output-state fidelities. (en)
Title	Increasing efficiency of a linear-optical quantum gate using electronic feed-forward Increasing efficiency of a linear-optical quantum gate using electronic feed-forward (en)
skos:prefLabel	Increasing efficiency of a linear-optical quantum gate using electronic feed-forward Increasing efficiency of a linear-optical quantum gate using electronic feed-forward (en)
skos:notation	RIV/61989592:15310/12:33139252!RIV13-MSM-15310___
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GA202/09/0747), P(LC06007), S, Z(MSM6198959213)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Fiurášek, Jaromír Ježek, Miroslav Mičuda, Michal Dušek, Miloslav Miková, Martina
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	141119
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/12:33139252
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	linear-optical quantum ,electronic feed-forward (en)
http://linked.open.../riv/klicoveSlovo	electronic feed-forward linear-optical quantum
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[A52BCD31A21B]
http://linked.open...i/riv/nazevZdroje	Physical Review A
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	5 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Quantum-optic experiments with an electronic feedback focused on quantum information processing Centre of Modern Optics
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	85
http://linked.open...iv/tvurceVysledku	Fiurášek, Jaromír Ježek, Miroslav Dušek, Miloslav Mičuda, Michal Straka, Ivo Miková, Martina Fikerová, Helena
http://linked.open...ain/vavai/riv/wos	000298860600007
http://linked.open...n/vavai/riv/zamer	Measurement and Information in Optics
issn	1050-2947
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevA.85.012305
http://localhost/t...ganizacniJednotka	15310

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