Maximally entangled mixed states: Creation and concentration

Nicholas A. Peters; Joseph B. Altepeter; David Branning; Evan R. Jeffrey; Tzu Chieh Wei; Paul G. Kwiat

doi:10.1103/PhysRevLett.92.133601

Maximally entangled mixed states: Creation and concentration

Nicholas A. Peters, Joseph B. Altepeter, David Branning, Evan R. Jeffrey, Tzu Chieh Wei, Paul G. Kwiat

Research output: Contribution to journal › Article › peer-review

127 Scopus citations

Abstract

The extension of the boundaries of experimentally accessible two-qubit Hilbert space using correlated photons from parametric down-conversion was investigated. Maximally entangled mixed states that lie above the Werner boundary in the linear entropy-tangle plane were created and characterized. A sensitivity imbalance in common state measures such as the tangle, linear entropy and fidelity was also investigated. It was demonstrated that the mixed states can be efficiently concentrated, simultaneously increasing both the purity and the degree of entanglement.

Original language	English
Article number	133601
Pages (from-to)	133601-1-133601-4
Journal	Physical Review Letters
Volume	92
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.92.133601
State	Published - Apr 2 2004
Externally published	Yes

Funding

This work was supported by the DCI, ARDA, and NSF Grant No. EIA-0121568.

Funders	Funder number
National Science Foundation	EIA-0121568
Directorate for Computer and Information Science and Engineering	0121568
Duke Cancer Institute
Agricultural Research Development Agency

Access to Document

10.1103/PhysRevLett.92.133601

Cite this

@article{25dbd14e1fa04e399fb50a1b3a9c2ce6,

title = "Maximally entangled mixed states: Creation and concentration",

abstract = "The extension of the boundaries of experimentally accessible two-qubit Hilbert space using correlated photons from parametric down-conversion was investigated. Maximally entangled mixed states that lie above the Werner boundary in the linear entropy-tangle plane were created and characterized. A sensitivity imbalance in common state measures such as the tangle, linear entropy and fidelity was also investigated. It was demonstrated that the mixed states can be efficiently concentrated, simultaneously increasing both the purity and the degree of entanglement.",

author = "Peters, {Nicholas A.} and Altepeter, {Joseph B.} and David Branning and Jeffrey, {Evan R.} and Wei, {Tzu Chieh} and Kwiat, {Paul G.}",

year = "2004",

month = apr,

day = "2",

doi = "10.1103/PhysRevLett.92.133601",

language = "English",

volume = "92",

pages = "133601--1--133601--4",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "13",

}

TY - JOUR

T1 - Maximally entangled mixed states

T2 - Creation and concentration

AU - Peters, Nicholas A.

AU - Altepeter, Joseph B.

AU - Branning, David

AU - Jeffrey, Evan R.

AU - Wei, Tzu Chieh

AU - Kwiat, Paul G.

PY - 2004/4/2

Y1 - 2004/4/2

N2 - The extension of the boundaries of experimentally accessible two-qubit Hilbert space using correlated photons from parametric down-conversion was investigated. Maximally entangled mixed states that lie above the Werner boundary in the linear entropy-tangle plane were created and characterized. A sensitivity imbalance in common state measures such as the tangle, linear entropy and fidelity was also investigated. It was demonstrated that the mixed states can be efficiently concentrated, simultaneously increasing both the purity and the degree of entanglement.

AB - The extension of the boundaries of experimentally accessible two-qubit Hilbert space using correlated photons from parametric down-conversion was investigated. Maximally entangled mixed states that lie above the Werner boundary in the linear entropy-tangle plane were created and characterized. A sensitivity imbalance in common state measures such as the tangle, linear entropy and fidelity was also investigated. It was demonstrated that the mixed states can be efficiently concentrated, simultaneously increasing both the purity and the degree of entanglement.

UR - http://www.scopus.com/inward/record.url?scp=2342571478&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.92.133601

DO - 10.1103/PhysRevLett.92.133601

M3 - Article

AN - SCOPUS:2342571478

SN - 0031-9007

VL - 92

SP - 133601-1-133601-4

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

M1 - 133601

ER -

Maximally entangled mixed states: Creation and concentration

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this