Mean-square bond length, root-mean-square end-to-end distance and gyration radius in diblock copolymer films have been studied by dissipative particle dynamics simulations. Results show evident linear trends of any pr...Mean-square bond length, root-mean-square end-to-end distance and gyration radius in diblock copolymer films have been studied by dissipative particle dynamics simulations. Results show evident linear trends of any property separately with the thickness of film, the interaction between particles of different types, the repulsion between particle and boundary, except for the dependence of the variations of mean-square bond length on the thickness of film, which exhibits as a wave trend. What＇s more, the varying trends of mean-square bond length and root-mean-square end-to-end distance can correspond to each other. The density distribution of either component in diblock copolymer film can be controlled and adjusted effectively through its interaction with boundary.展开更多
As two forms of the quantum entanglement control (QEC), the quantum entanglement swapping and preservation are demonstrated in a three-qubit nuclear magnetic resonance (NMR) quantum computer. The pseudopure state is p...As two forms of the quantum entanglement control (QEC), the quantum entanglement swapping and preservation are demonstrated in a three-qubit nuclear magnetic resonance (NMR) quantum computer. The pseudopure state is prepared to represent the entangled states through macroscopic signals. Through controlling the interactions between the system and its environment, we can preserve an initial entangled state for a longer time. Experimental results show an agreement between theory and experiment.展开更多
文摘Mean-square bond length, root-mean-square end-to-end distance and gyration radius in diblock copolymer films have been studied by dissipative particle dynamics simulations. Results show evident linear trends of any property separately with the thickness of film, the interaction between particles of different types, the repulsion between particle and boundary, except for the dependence of the variations of mean-square bond length on the thickness of film, which exhibits as a wave trend. What＇s more, the varying trends of mean-square bond length and root-mean-square end-to-end distance can correspond to each other. The density distribution of either component in diblock copolymer film can be controlled and adjusted effectively through its interaction with boundary.
文摘As two forms of the quantum entanglement control (QEC), the quantum entanglement swapping and preservation are demonstrated in a three-qubit nuclear magnetic resonance (NMR) quantum computer. The pseudopure state is prepared to represent the entangled states through macroscopic signals. Through controlling the interactions between the system and its environment, we can preserve an initial entangled state for a longer time. Experimental results show an agreement between theory and experiment.
