2014/07/31 by Joydip Ghosh · 1 citation
Computer Science · Mathematics · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Condensed matter physics #Mathematics #Physics #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum information #Quantum mechanics #Quantum state #Qubit #Qutrit #Statistical physics #Superconductivity #Topology (electrical circuits) #Transmon #cond-mat.supr-con #quant-ph
paper · pdf · doi:10.1103/physreva.90.062318
published as Phys. Rev. A 90, 062318 (2014) · 13 pages, 3 figures. Accepted in Phys. Rev. A
arxiv created 2014/11/26 · openalex publication_date 2014/12/10 · arxiv updated 2014/12/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Spin-1 systems, in comparison to spin-(1)/(2) systems, offer a better security for encoding and transferring quantum information, primarily due to their larger Hilbert spaces. Superconducting artificial atoms possess multiple energy levels, thereby being capable of emulating higher-spin systems. Here I consider a one-dimensional lattice of nearest-neighbor-coupled superconducting transmon systems, and devise a scheme to transfer an arbitrary qutrit state (a state encoded in a three-level quantum system) across the chain. I assume adjustable couplings between adjacent transmons, derive an analytic constraint for the control pulse, and show how to satisfy the constraint to achieve a high-fidelity state transfer under current experimental conditions. My protocol thus enables enhanced quantum communication and information processing with promising superconducting qutrits.