2015/07/31 by Bobby Antonio, Abolfazl Bayat, Sanjeev Kumar +3
Computer Science · Physics and Astronomy · #Charge (physics) #Condensed matter physics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum information #Quantum mechanics #Spin (aerodynamics) #Spins #Spintronics #cond-mat.str-el #quant-ph
paper · pdf · doi:10.1103/physrevlett.115.216804
published as Phys. Rev. Lett. 115, 216804 (2015) · 5 pages of main text and 6 pages of supplemental materials
openalex publication_date 2015/11/20 · arxiv created 2015/11/25 · arxiv updated 2015/11/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Technological applications of many-body structures that emerge in gated devices under minimal control are largely unexplored. Here we show how emergent Wigner crystals in a semiconductor quantum wire can facilitate a pivotal requirement for a scalable quantum computer, namely, transmitting quantum information encoded in spins faithfully over a distance of micrometers. The fidelity of the transmission is remarkably high, faster than the relevant decohering effects, independent of the details of the spatial charge configuration in the wire, and realizable in dilution refrigerator temperatures. The transfer can evidence near unitary many-body nonequilibrium dynamics hitherto unseen in a solid-state device. It could also be useful in spintronics as a method for pure spin current over a distance without charge movement.