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Statements

Subject Item
n2:RIV%2F00216224%3A14330%2F05%3A00013051%21RIV10-GA0-14330___
rdf:type
skos:Concept n14:Vysledek
dcterms:description
We investigate decoherence channels that are modeled as a sequence of collisions of a quantum system (e.g., a qubit) with particles (e.g., qubits) of the environment. We show that collisions induce decoherence when a bipartite interaction between the system qubit and an environment (reservoir) qubit is described by the controlled-U unitary transformation (gate). We characterize decoherence channels and in the case of a qubit we specify the most general decoherence channel and derive a corresponding master equation. Finally, we analyze entanglement that is generated during the process of decoherence between the system and its environment. We investigate decoherence channels that are modeled as a sequence of collisions of a quantum system (e.g., a qubit) with particles (e.g., qubits) of the environment. We show that collisions induce decoherence when a bipartite interaction between the system qubit and an environment (reservoir) qubit is described by the controlled-U unitary transformation (gate). We characterize decoherence channels and in the case of a qubit we specify the most general decoherence channel and derive a corresponding master equation. Finally, we analyze entanglement that is generated during the process of decoherence between the system and its environment.
dcterms:title
All (qubit) decoherences: Complete characterization and physical implementation All (qubit) decoherences: Complete characterization and physical implementation
skos:prefLabel
All (qubit) decoherences: Complete characterization and physical implementation All (qubit) decoherences: Complete characterization and physical implementation
skos:notation
RIV/00216224:14330/05:00013051!RIV10-GA0-14330___
n3:aktivita
n10:Z n10:P
n3:aktivity
P(GA201/04/1153), Z(MSM0021622419)
n3:cisloPeriodika
No. 2
n3:dodaniDat
n5:2010
n3:domaciTvurceVysledku
n16:4347196 n16:1365878
n3:druhVysledku
n12:J
n3:duvernostUdaju
n9:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
511734
n3:idVysledku
RIV/00216224:14330/05:00013051
n3:jazykVysledku
n19:eng
n3:klicovaSlova
quantum information processing; decoherence
n3:klicoveSlovo
n13:quantum%20information%20processing n13:decoherence
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[D1775F55D5A6]
n3:nazevZdroje
Physical Review A
n3:obor
n6:BE
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n18:GA201%2F04%2F1153
n3:rokUplatneniVysledku
n5:2005
n3:svazekPeriodika
Vol. 72
n3:tvurceVysledku
Bužek, Vladimír Ziman, Mário
n3:wos
000231564200029
n3:zamer
n8:MSM0021622419
s:issn
1050-2947
s:numberOfPages
9
n11:organizacniJednotka
14330