Pashkin, Yu. A.; Tilma, T.; Averin, D. V.; Astafiev, O.; Yamamoto, T.; Nakamura, Y.; Nori, F.; Tsai, J. S. Entanglement of two coupled charge qubits. (English) Zbl 1058.81529 Int. J. Quantum Inf. 1, No. 4, 421-426 (2003). Summary: We have analyzed the entanglement of a system of two coupled charge qubits. We calculate the amount of entanglement using several different approaches. We show that in the ideal case the system remains entangled most of the time and the amount of entanglement reaches almost unity, i.e., the system becomes maximally entangled at certain instances. Cited in 9 Documents MSC: 81P68 Quantum computation PDFBibTeX XMLCite \textit{Yu. A. Pashkin} et al., Int. J. Quantum Inf. 1, No. 4, 421--426 (2003; Zbl 1058.81529) Full Text: DOI References: [1] DOI: 10.1103/PhysRevLett.77.1413 · Zbl 0947.81003 · doi:10.1103/PhysRevLett.77.1413 [2] Horodecki M., Phys. Lett. 223 pp 1– · Zbl 1037.81501 · doi:10.1016/S0375-9601(96)00706-2 [3] Vidal G., Phys. Rev. 65 pp 032314– · doi:10.1103/PhysRevA.65.032314 [4] DOI: 10.1103/PhysRevLett.78.5022 · doi:10.1103/PhysRevLett.78.5022 [5] DOI: 10.1103/PhysRevLett.80.2245 · Zbl 1368.81047 · doi:10.1103/PhysRevLett.80.2245 [6] Wootters W. K., Quant. Inform. Comput. 1 pp 27– [7] Bennett H. H., Phys. Rev. 54 pp 3824– · Zbl 1371.81041 · doi:10.1103/PhysRevA.54.3824 [8] Bennett H. H., Phys. Rev. 53 pp 2046– · doi:10.1103/PhysRevA.53.2046 [9] DOI: 10.1038/nature01365 · doi:10.1038/nature01365 [10] DOI: 10.1088/0305-4470/35/48/315 · Zbl 1044.22010 · doi:10.1088/0305-4470/35/48/315 This reference list is based on information provided by the publisher or from digital mathematics libraries. Its items are heuristically matched to zbMATH identifiers and may contain data conversion errors. In some cases that data have been complemented/enhanced by data from zbMATH Open. This attempts to reflect the references listed in the original paper as accurately as possible without claiming completeness or a perfect matching.