Title :
Tuning quantum discord in Josephson charge qubits system
Author :
Shang Boxing ; Zhang Weiwei ; Guo Yucui ; Xi Xiaoqiang
Author_Institution :
Sch. of Sci., Xi´an Univ. of Posts & Telecommun., Xi´an, China
Abstract :
A type of two qubits Josephson charge system is constructed, and properties of the quantum discord (QD) as well as the differences between thermal QD and thermal entanglement are investigated. A detailed calculation shows that the magnetic flux is more efficient than the voltage in tuning QD. By choosing proper system parameter the maximum QD can be realized in our two qubits Josephson charge system.
Keywords :
quantum computing; quantum entanglement; Josephson charge qubit system; magnetic flux; quantum discord; system parameter; thermal QD; thermal entanglement; Correlation; Couplings; Inductance; Josephson junctions; Logic gates; Magnetic flux; SQUIDs; Josephson charge qubits; quantum discord;
Journal_Title :
Communications, China
DOI :
10.1109/CC.2014.7022544
