Work

Energy-saving fast-forward scaling

Year: 2025

Type: article

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.

Source: SciPost Physics Core

DOI: 10.21468/scipostphyscore.8.1.019

Author: Takuya Hatomura

Institutions: NTT (Japan), NTT Basic Research Laboratories

Language: English

Topic: Quantum Computing Algorithms and Architecture

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: diamond

Funders: Japan Science and Technology Agency, Moonshot Research and Development Program