2009/07/10 by S. G. Schirmer, P. J. Pemberton-Ross, Peter Pemberton‐Ross · 1 citation
Computer Science · Engineering · Mathematics · Physics and Astronomy · #Actuator #Chain (unit) #Computer network #Computer science #Electrical engineering #Engineering #Fidelity #Hamiltonian (control theory) #High fidelity #Ideal (ethics) #Information transfer #Information transmission #Mathematical optimization #Mathematics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum entanglement #Quantum information #Quantum information processing #Quantum information science #Quantum mechanics #Spin (aerodynamics) #Telecommunications #Topology (electrical circuits) #Transmission (telecommunications) #quant-ph
paper · pdf · doi:10.1103/physreva.80.030301
published as Phys. Rev. A 80, 030301(R) (2009) · revtex4, 4 pages, 5 figures
arxiv created 2009/07/10 · openalex publication_date 2009/09/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Spin chains have been proposed as quantum wires for information transfer in solid-state quantum architectures. We show that huge gains in both transfer speed and fidelity are possible using a minimalist control approach that relies only on a single local on-off switch actuator. Effective switching time sequences can be determined using optimization techniques for both ideal and disordered chains. Simulations suggest that effective optimization is possible even in the absence of knowledge of the Hamiltonian or accurate models.