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arXiv · 2402.10683

Energy-saving fast-forward scaling

Takuya Hatomura
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Abstract

We propose energy-saving fast-forward scaling. Fast-forward scaling is a method which enables us to speed up (or slow down) given dynamics in a certain measurement basis. We introduce energy costs of fast-forward scaling, and find possibility of energy-saving speedup for time-independent measurement bases. As concrete examples, we show such energy-saving fast-forward scaling in a two-level system and quantum annealing of a general Ising spin glass. We also discuss the influence of a time-dependent measurement basis, and give a remedy for unwanted energy costs. The present results pave the way for realization of energy-efficient quantum technologies.

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Takuya Hatomura. 2024-02-16. Energy-saving fast-forward scaling. https://doi.org/10.21468/scipostphyscore.8.1.019

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