| MCHUGH, Derek, Mário ZIMAN a Vladimír BUŽEK. Entanglement, purity and energy: Two qubits vs Two modes. Physical Review A. New York: American Physical Society, 2006, Vol. 74, No. 4, s. A042303, 13 s. ISSN 1050-2947. |
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@article{706343,
author = {McHugh, Derek and Ziman, Mário and Bužek, Vladimír},
article_location = {New York},
article_number = {No. 4},
keywords = {entanglement; purity; energy},
language = {eng},
issn = {1050-2947},
journal = {Physical Review A},
title = {Entanglement, purity and energy: Two qubits vs Two modes},
volume = {Vol. 74},
year = {2006}
}
TY - JOUR
ID - 706343
AU - McHugh, Derek - Ziman, Mário - Bužek, Vladimír
PY - 2006
TI - Entanglement, purity and energy: Two qubits vs Two modes
JF - Physical Review A
VL - Vol. 74
IS - No. 4
SP - A042303
EP - A042303
PB - American Physical Society
SN - 10502947
KW - entanglement
KW - purity
KW - energy
N2 - We study the relationship between the entanglement, mixedness, and energy of two-qubit and two-mode Gaussian quantum states. We parametrize the set of allowed states of these two fundamentally different physical systems using measures of entanglement, mixedness, and energy that allow us to compare and contrast the two systems using a phase diagram. This phase diagram enables one to clearly identify not only the physically allowed states, but the set of states connected under an arbitrary quantum operation. We pay particular attention to the maximally entangled mixed states of each system. Following this we investigate how efficiently one may transfer entanglement from two-mode to two-qubit states.
ER -
MCHUGH, Derek, Mário ZIMAN a Vladimír BUŽEK. Entanglement, purity and energy: Two qubits vs Two modes. \textit{Physical Review A}. New York: American Physical Society, 2006, Vol. 74, No. 4, s.~A042303, 13 s. ISSN~1050-2947.
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