MCHUGH, Derek, Mário ZIMAN and Vladimír BUŽEK. Entanglement, purity and energy: Two qubits vs Two modes. Physical Review A. New York: American Physical Society, 2006, Vol. 74, No. 4, p. A042303, 13 pp. 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 and 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, p.~A042303, 13 pp. ISSN~1050-2947.
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