Breaking Landauer's bound in a spin-encoded quantum computer

Autor:	Frank Zhigang Wang
Rok vydání:	2022
Předmět:	Physics - General Physics General Physics (physics.gen-ph) Modeling and Simulation Signal Processing FOS: Physical sciences Statistical and Nonlinear Physics Electrical and Electronic Engineering B.0 Theoretical Computer Science Electronic Optical and Magnetic Materials
Zdroj:	Quantum Information Processing. 21
ISSN:	1573-1332
Popis:	It is commonly recognized that the Landauer bound holds in (irreversible) quantum operations. In this study, we verified this bound by extracting a single spin from a spin-spin magnetic interaction experiment to demonstrate that the Landauer bound can be approached quantitatively with an approaching rate of 79.3 percent via quantum spin tunneling. An optically manipulated spin-encoded quantum computer is designed, in which energy bound near kB T to erase a spin qubit is theoretically sensible and experimentally verified. This work may represent the last piece of the puzzle in quantum Landauer erasure in terms of a single spin being the smallest information carrier. Comment: 8 pages, 6 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2eca0dcad2fcc31fb2f22192f4dab40f https://doi.org/10.1007/s11128-022-03707-2 Zobrazit plný text záznamu Full text from SpringerLink