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

2005/12/31 by Jingfu Zhang, Xinhua Peng, Dieter Suter
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #quant-ph

paper · pdf · doi:10.1103/physreva.73.062325

published as Phys. Rev. A, 73, 062325 (2006) · Comments are welcome to [email protected] or [email protected]. More experimental results are added

arxiv created 2006/03/10 · openalex publication_date 2006/06/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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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