Time-dependent Pancharatnam phases and quantum correlations for coupling superconducting two-qubit system with dissipative environment

• Autorzy: Xue Liyuan , Wang Z. S.

Identyfikatory

DOI

10.37190/oa200402

• Języki publikacji: EN

Abstrakty

EN

Two coupling superconducting qubits are studied for the quantum concurrence, discord, and Pancharatnam phase, for the X and Y states under the dephasing and instantaneous decay environment as well as their couplings. We find that the X and Y states are special mixed states according to the Bloch radius. In general, the larger the environment and phonon number are at the larger region of time, the larger the quantum concurrence and discord are. But we find that the environment correlations are helpful to implement the quantum computation. The Pancharatnam phases provide a way to distinguish the X and Y states.

Słowa kluczowe

EN

Pancharatnam phases; quantum concurrence; quantum discord; dissipative environment; Bloch radius

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2020
• Tom: Vol. 50, nr 4
• Strony: 511--537
• Opis fizyczny: Bibliogr. 49 poz., rys.

Twórcy

autor

Xue Liyuan

• Quantum Information Research Center, Shangrao Normal University, Shangrao 334001, P.R. China

autor

Wang Z. S.

• College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, P.R. China

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Uwagi

1. W bibliografii rozdzielono poz. 1 i 42.

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).