About: Quantum disentanglers

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Quantum disentanglers Goto Sponge NotDistinct Permalink

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

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	It is not possible to disentangle a qubit in an unknown state \ psi > from a set of N-1 ancilla qubits prepared in a specific reference state \0 >. That is, it is not possible to perfectly perform the transformation (\ psi ,0,...,0 > + \0,psi,...,0 > +...+\0.0,...,0 psi >) --> \0,...,0 > circle times \ psi >. The question is then how well we can do? We consider a number of different methods of extracting an unknown state from an entangled state formed from that qubit and a set of ancilla qubits in a known state. Measuring the whole system is, as expected, the least effective method. We present various quantum ''devices'' which disentangle the unknown qubit from the set of ancilla qubits. In particular, we present the optimal universal disentangler which disentangles the unknown qubit with a fidelity that does not depend on the state of the qubit, and a probabilistic disentangler which performs the perfect disentangling transformation, but with a probability less than 1. It is not possible to disentangle a qubit in an unknown state \ psi > from a set of N-1 ancilla qubits prepared in a specific reference state \0 >. That is, it is not possible to perfectly perform the transformation (\ psi ,0,...,0 > + \0,psi,...,0 > +...+\0.0,...,0 psi >) --> \0,...,0 > circle times \ psi >. The question is then how well we can do? We consider a number of different methods of extracting an unknown state from an entangled state formed from that qubit and a set of ancilla qubits in a known state. Measuring the whole system is, as expected, the least effective method. We present various quantum ''devices'' which disentangle the unknown qubit from the set of ancilla qubits. In particular, we present the optimal universal disentangler which disentangles the unknown qubit with a fidelity that does not depend on the state of the qubit, and a probabilistic disentangler which performs the perfect disentangling transformation, but with a probability less than 1. (en)
Title	Quantum disentanglers Quantum disentanglers (en)
skos:prefLabel	Quantum disentanglers Quantum disentanglers (en)
skos:notation	RIV/00216224:14330/00:00002895!RIV/2002/GA0/143302/N
http://linked.open.../vavai/riv/strany	N/A
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA201/98/0369), Z(MSM 143300001)
http://linked.open...iv/cisloPeriodika	05
http://linked.open...vai/riv/dodaniDat	2002
http://linked.open...aciTvurceVysledku	Bužek, Vladimír
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	Masarykova univerzita / Fakulta informatiky
http://linked.open...dnocenehoVysledku	724166
http://linked.open...ai/riv/idVysledku	RIV/00216224:14330/00:00002895
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	CLONING, STATES, INFORMATION, ENSEMBLES (en)
http://linked.open.../riv/klicoveSlovo	INFORMATION ENSEMBLES CLONING STATES
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[C9ABA32E3D7B]
http://linked.open...i/riv/nazevZdroje	Physical Review A
http://linked.open...in/vavai/riv/obor	BE
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Informatics as the third methodology
http://linked.open...UplatneniVysledku	2000
http://linked.open...v/svazekPeriodika	62
http://linked.open...iv/tvurceVysledku	Bůžek, Vladimír Hillery, M.
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20143300001
issn	1050-2947
number of pages	1 (xsd:int)
http://localhost/t...ganizacniJednotka	14330

Faceted Search & Find service v1.16.118 as of Jun 21 2024

Alternative Linked Data Documents: ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3240 as of Jun 21 2024, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (126 GB total memory, 48 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software