arXiv:2310.18997 · Physical review. E

Qubit reset with a shortcut-to-isothermal scheme

Hongbo Huang, Geng Li, Hui Dong

Published Jun 13, 2024• 2 citations

Abstract

Landauer's principle shows that the minimum energy cost to reset a classical bit in a bath with temperature T is k_{B}Tln2 in the infinite time. However, the task to reset the bit in finite time has posted a new challenge, especially for quantum bit (qubit) where both the operation time and controllability are limited. We design a shortcut-to-isothermal scheme to reset a qubit in finite time τ with limited controllability. The energy cost is minimized with the optimal control scheme with and without bound. This optimal control scheme can provide a reference to realize qubit reset with minimum energy cost for the limited time.

DOI: 10.1103/physreve.109.064132

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