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...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.展开更多
In this note,it is proved that for the annihilation operator B of the unforced quantum harmonic oscillator,B^n is mixing and generically 5-chaotic with any 0 < δ < 2 for each positive integer n.Besides,by using...In this note,it is proved that for the annihilation operator B of the unforced quantum harmonic oscillator,B^n is mixing and generically 5-chaotic with any 0 < δ < 2 for each positive integer n.Besides,by using the result in[Wu X and Zhu P,J.Phys.A:Math.Theor.,2011,44:505101],the authors obtain that the principal measure of B^n is equal to 1 for each positive integer n.展开更多
文摘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.
基金supported by YBXSZC20131046the Scientific Research Fund of Sichuan Provincial Education Department under Grant No.14ZB0007
文摘In this note,it is proved that for the annihilation operator B of the unforced quantum harmonic oscillator,B^n is mixing and generically 5-chaotic with any 0 < δ < 2 for each positive integer n.Besides,by using the result in[Wu X and Zhu P,J.Phys.A:Math.Theor.,2011,44:505101],the authors obtain that the principal measure of B^n is equal to 1 for each positive integer n.
