Tomotaka Kuwahara

Sep 4, 2024 | arxiv.org | Donghoon Kim |Yusuke Kimura |Tomotaka Kuwahara

[Submitted on 4 Sep 2024] Title:Efficient Simulation of 1D Long-Range Interacting Systems at Any Temperature View a PDF of the paper titled Efficient Simulation of 1D Long-Range Interacting Systems at Any Temperature, by Rakesh Achutha and 3 other authors View PDF HTML (experimental) Abstract:We introduce a method that ensures efficient computation of one-dimensional quantum systems with long-range interactions across all temperatures.

Aug 28, 2024 | link.aps.org | Tan Van Vu |Kitashirakawa Oiwakecho |Tomotaka Kuwahara |Japan Science

Accurate quantum computing relies on the precision of quantum gates. However, quantum gates in practice are generally affected by dissipative environments, which can significantly reduce their fidelity. In this paper, we elucidate the fundamental relations between the average fidelity of generic quantum gates and the dissipation that occurs during the computing processes.

Mar 21, 2024 | nature.com | Tomotaka Kuwahara |Tan Van Vu

AbstractThe speed limit of information propagation is one of the most fundamental features in non-equilibrium physics. The region of information propagation by finite-time dynamics is approximately restricted inside the effective light cone that is formulated by the Lieb-Robinson bound. To date, extensive studies have been conducted to identify the shape of effective light cones in most experimentally relevant many-body systems.

Mar 18, 2024 | arxiv.org | Tomotaka Kuwahara