Demonstration of long-range correlations via susceptibility measurements in a one-dimensional superconducting Josephson spin chain

Autor: D. M. Tennant, X. Dai, A. J. Martinez, R. Trappen, D. Melanson, M. A. Yurtalan, Y. Tang, S. Bedkihal, R. Yang, S. Novikov, J. A. Grover, S. M. Disseler, J. I. Basham, R. Das, D. K. Kim, A. J. Melville, B. M. Niedzielski, S. J. Weber, J. L. Yoder, A. J. Kerman, E. Mozgunov, D. A. Lidar, A. Lupascu
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: npj Quantum Information, Vol 8, Iss 1, Pp 1-9 (2022)
Druh dokumentu: article
ISSN: 2056-6387
DOI: 10.1038/s41534-022-00590-8
Popis: Abstract Spin chains have long been considered an effective medium for long-range interactions, entanglement generation, and quantum state transfer. In this work, we explore the properties of a spin chain implemented with superconducting flux circuits, designed to act as a connectivity medium between two superconducting qubits. The susceptibility of the chain is probed and shown to support long-range, cross-chain correlations. In addition, interactions between the two end qubits, mediated by the coupler chain, are demonstrated. This work has direct applicability in near term quantum annealing processors as a means of generating long-range, coherent coupling between qubits.
Databáze: Directory of Open Access Journals