Speedup of quantum-state transfer by three-qubit interactions
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Date
2006-06-19
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The American Physical Society
Abstract
Universal quantum information processing requires single-qubit rotations and two-qubit interactions as minimal resources. A possible step beyond this minimal scheme is the use of three-qubit interactions. We consider such three-qubit interactions and show how they can reduce the time required for a quantum state transfer in an XY spin chain. For the experimental implementation, we use liquid-state nuclear magnetic resonance, where three-qubit interactions can be implemented by sequences of radio-frequency pulses.
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Zhang, J.; Peng, X.; Suter, D.: Speedup of quantum-state transfer by three-qubit interactions : Implementation by nuclear magnetic resonance. In: Physical Review A Jg. 73(2006), 062325.