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

Autor: Frank Zhigang Wang
Rok vydání: 2022
Předmět:
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