Approaching Landauer's Bound In A Spin-Encoded Quantum Computer
arXiv:2302.00476 · doi:10.1007/s11128-022-03707-2
Abstract
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.
arXiv comment8 pages, 6 figures
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