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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F04%3A00002368%21RIV%2F2005%2FMSM%2F153105%2FN
rdf:type
n9:Vysledek skos:Concept
dcterms:description
We propose quantum devices that can realize probabilistically different projective measurements on a qubit. The desired measurement basis is selected by the quantum state of a program register. First we analyze the phase-covariant multimeters for a large class of program states and then the universal multimeters for a special choice of program. In both cases we start with deterministic but error-prone devices and then proceed to devices that never make a mistake but from time to time give an inconclusive result. These multimeters are optimized (for a given type of program) with respect to the minimum probability of an inconclusive result. This concept is further generalized to multimeters that minimize the error rate for a given probability of an inconclusive result (or vice versa). Finally, we propose a generalization for qudits. We propose quantum devices that can realize probabilistically different projective measurements on a qubit. The desired measurement basis is selected by the quantum state of a program register. First we analyze the phase-covariant multimeters for a large class of program states and then the universal multimeters for a special choice of program. In both cases we start with deterministic but error-prone devices and then proceed to devices that never make a mistake but from time to time give an inconclusive result. These multimeters are optimized (for a given type of program) with respect to the minimum probability of an inconclusive result. This concept is further generalized to multimeters that minimize the error rate for a given probability of an inconclusive result (or vice versa). Finally, we propose a generalization for qudits. V článku nevrhujeme pravděpodobnostní kvantové multimetry.
dcterms:title
Pravděpodobnostní kvantové multimetry Probabilistic quantum multimeters Probabilistic quantum multimeters
skos:prefLabel
Pravděpodobnostní kvantové multimetry Probabilistic quantum multimeters Probabilistic quantum multimeters
skos:notation
RIV/61989592:15310/04:00002368!RIV/2005/MSM/153105/N
n3:strany
032302-1-13
n3:aktivita
n18:P
n3:aktivity
P(LN00A015)
n3:cisloPeriodika
3
n3:dodaniDat
n10:2005
n3:domaciTvurceVysledku
n6:4555201 n6:8991081
n3:druhVysledku
n4:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
582109
n3:idVysledku
RIV/61989592:15310/04:00002368
n3:jazykVysledku
n7:eng
n3:klicovaSlova
quantum multimeters
n3:klicoveSlovo
n13:quantum%20multimeters
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[D0FA35D12CA2]
n3:nazevZdroje
Physical Review A
n3:obor
n17:BH
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n16:LN00A015
n3:rokUplatneniVysledku
n10:2004
n3:svazekPeriodika
69
n3:tvurceVysledku
Dušek, Miloslav Fiurášek, Jaromír
s:issn
1050-2947
s:numberOfPages
4
n15:organizacniJednotka
15310