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arXiv · 2310.18997

Qubit Reset with a Shortcut-to-Isothermal Scheme

Hong-Bo Huang·Geng Li·Hui Dong
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Abstract

Landauer's principle shows that the minimum energy cost to reset a classical bit in a bath with temperature $T$ is $k_{B}T\ln2$ 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 $\tau$ with limited controllability. The energy cost is minimized with the optimal control scheme with and without nonholonomic constraint. This optimal control scheme can provide a reference to realize qubit reset with minimum energy cost for the limited time.

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Hong-Bo Huang, Geng Li, Hui Dong. 2023-10-29. Qubit Reset with a Shortcut-to-Isothermal Scheme. https://arxiv.org/abs/2310.18997

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