Year: 2025
Type: article
Abstract: The implementation of information processing on a quantum device is a fundamental challenge for many technologies. As a matter of fact, the faster one wants to implement a quantum operation, the higher is the thermodynamic cost of realizing the quantum process. Here, we theoretically propose and experimentally verify a trade-off between quantum speed and energy cost using Schatten 2-norm. Our findings demonstrate that this trade-off remains tight for any instant of time, whether dealing with initial eigenstates or initial thermal equilibrium states, as illustrated by the Landau-Zehner model. This observation underscores the significance of coherence of the evolved states. By extending our method to open system, we find that quantum speed can be significantly affected by environmental decoherence effect. These results illuminate the fundamental limits of quantum state dynamics and hold promise for potential applications in quantum sensing and quantum computing.
Source: npj Quantum Information
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,290
Funders: National Natural Science Foundation of China, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Government of Jiangsu Province, Ministerio de Economía y Competitividad, Conselho Nacional de Desenvolvimento Científico e Tecnológico, University of Science and Technology of China, Ministério da Ciência, Tecnologia, Inovações e Comunicações
OpenAlex ID: W4416797335