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Speedup of quantum state transfer by three- qubit interactions: Implementation by nuclear magnetic resonance

Jingfu Zhang·Xinhua Peng·Dieter Suter
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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 (NMR), where three-qubit interactions can be implemented by sequences of radio-frequency pulses.

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Jingfu Zhang, Xinhua Peng, Dieter Suter. 2006-03-10. Speedup of quantum state transfer by three- qubit interactions: Implementation by nuclear magnetic resonance. https://doi.org/10.1103/physreva.73.062325

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