Demonstration of Quantum Entanglement Control Using Nuclear Magnetic Resonance
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Abstract
With the two forms of the quantum entanglement control, the quantum entanglement swapping and preservation are demonstrated in a three-qubit nuclear magnetic resonance quantum computer. The pseudopure state is prepared to represent the quantum entangled states through macroscopic signals. Entanglement swapping is directly realized by a swap operation. By controlling the interactions between the system and its environment, we can preserve an initial entangled state for a longer time. The experimental results are in agreement with the experiment.
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