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

Zhang, Jingfu; Peng, Xinhua; Suter, Dieter

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

Authors

Zhang, Jingfu

Peng, Xinhua

Suter, Dieter

Description

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.
Comments are welcome to Jingfu@e3.physik.uni-dortmund.de or zhangjfu2000@yahoo.com. More experimental results are added