X states of the same spectrum and entanglement as all two-qubit states

Samuel R. Hedemann

doi:10.1007/s11128-018-2061-0

X states of the same spectrum and entanglement as all two-qubit states

Samuel R. Hedemann

Department of Physics

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

9 Scopus citations

Abstract

We present an explicit family of two-qubit X states with entanglement-preserving unitary equivalence to the set of general states; that is, for any spectrum–entanglement combination achievable by general states, this family contains an X state of the same spectrum and entanglement.

Original language	English
Article number	293
Journal	Quantum Information Processing
Volume	17
Issue number	11
DOIs	https://doi.org/10.1007/s11128-018-2061-0
State	Published - 1 Nov 2018

Keywords

Concurrence
Entanglement
Entanglement-preserving unitary
TGX states
True-generalized X states
X states

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10.1007/s11128-018-2061-0

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title = "X states of the same spectrum and entanglement as all two-qubit states",

abstract = "We present an explicit family of two-qubit X states with entanglement-preserving unitary equivalence to the set of general states; that is, for any spectrum–entanglement combination achievable by general states, this family contains an X state of the same spectrum and entanglement.",

keywords = "Concurrence, Entanglement, Entanglement-preserving unitary, TGX states, True-generalized X states, X states",

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AB - We present an explicit family of two-qubit X states with entanglement-preserving unitary equivalence to the set of general states; that is, for any spectrum–entanglement combination achievable by general states, this family contains an X state of the same spectrum and entanglement.

KW - Concurrence

KW - Entanglement

KW - Entanglement-preserving unitary

KW - TGX states

KW - True-generalized X states

KW - X states

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JO - Quantum Information Processing

JF - Quantum Information Processing

IS - 11

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ER -

X states of the same spectrum and entanglement as all two-qubit states

Abstract

Keywords

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