Through the study of the factorization conditions of a wave function made up of two, three and four qubits, we propose an analytical expression which can characterize entangled states in terms of the coefficients of t...
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Through the study of the factorization conditions of a wave function made up of two, three and four qubits, we propose an analytical expression which can characterize entangled states in terms of the coefficients of the wave function and density matrix elements.
R. Penrose and S. Hameroff have proposed an idea that the brain can attain high efficient quantum computation by functioning of microtubular structure of neurons in the cytoskelton of biological cells, including neuro...
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R. Penrose and S. Hameroff have proposed an idea that the brain can attain high efficient quantum computation by functioning of microtubular structure of neurons in the cytoskelton of biological cells, including neurons of the brain. But Tegmark estimated the duration of coherence of a quantum state in a warm wet brain to be on the order of 10>–13
Following Scully et al.’s study on the mechanism of complementarity, we further investigate the role of detector in which-way experiment. We will show that the initial quantum pure state of particle will reduce to a ...
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Following Scully et al.’s study on the mechanism of complementarity, we further investigate the role of detector in which-way experiment. We will show that the initial quantum pure state of particle will reduce to a mixture state because of the inevitable interaction between particle and detector, then the coherence of wavefunction for the particle falling on the screen will be destroyed, which leads to the disappearance of interference fringes in which-way experiment.
This paper studies the simple alternating-current(AC) control strategy for performing quantum state manipulation under a non-Markovian environment(consisting of a cluster of two-level systems).Genetic algorithm is ado...
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This paper studies the simple alternating-current(AC) control strategy for performing quantum state manipulation under a non-Markovian environment(consisting of a cluster of two-level systems).Genetic algorithm is adopted to optimize the parameters of the AC control to fulfil one-qubit quantum operations,such as the NOT gate,the Z gate,and the Hadamard gate. Theoretical analysis and simulations show that our method can keep the Rabi frequency of the system away from the noise band so as to suppress low-frequency 1/f *** the meantime,the strategy can also drive the quantum state to the target state with high fidelities.
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