1 code implementation • 10 Apr 2025 • Kenya Sakka, Kosuke Mitarai, Keisuke Fujii
Quantum feature maps are a key component of quantum machine learning, encoding classical data into quantum states to exploit the expressive power of high-dimensional Hilbert spaces.
no code implementations • 1 Dec 2023 • Yoshiaki Kawase, Kosuke Mitarai, Keisuke Fujii
Since quantum states are higher dimensional objects that can only be seen via observables, our visualization method, which inherits the similarity of quantum data, would be useful in understanding the behavior of quantum circuits and algorithms.
no code implementations • 29 Nov 2023 • Kohei Morimoto, Yusuke Takase, Kosuke Mitarai, Keisuke Fujii
In this paper, we introduce the quantum adaptive distribution search (QuADS), a quantum continuous optimization algorithm that integrates Grover adaptive search (GAS) with the covariance matrix adaptation - evolution strategy (CMA-ES), a classical technique for continuous optimization.
1 code implementation • 29 Jun 2023 • Leonardo Placidi, Ryuichiro Hataya, Toshio Mori, Koki Aoyama, Hayata Morisaki, Kosuke Mitarai, Keisuke Fujii
In fact, also the Machine Learning research related to quantum computers undertakes a dual challenge: enhancing machine learning exploiting the power of quantum computers, while also leveraging state-of-the-art classical machine learning methodologies to help the advancement of quantum computing.
noisy quantum circuit classification (quantum ML, error mitigation)
quantum circuit classification (classical ML)
+1
no code implementations • 25 Apr 2023 • Nozomu Kobayashi, Yoshiyuki Suimon, Koichi Miyamoto, Kosuke Mitarai
In this paper, we investigate the application of quantum and quantum-inspired machine learning algorithms to stock return predictions.
no code implementations • 9 Feb 2022 • Yoshiaki Kawase, Kosuke Mitarai, Keisuke Fujii
In this paper, we propose to use quantum neural networks for parametric t-SNE to reflect the characteristics of high-dimensional quantum data on low-dimensional data.
no code implementations • 4 Nov 2021 • Norihito Shirai, Kenji Kubo, Kosuke Mitarai, Keisuke Fujii
In this work, we explore a quantum machine learning model with a deep parameterized quantum circuit and aim to go beyond the conventional quantum kernel method.
1 code implementation • 16 Dec 2020 • M. Cerezo, Andrew Arrasmith, Ryan Babbush, Simon C. Benjamin, Suguru Endo, Keisuke Fujii, Jarrod R. McClean, Kosuke Mitarai, Xiao Yuan, Lukasz Cincio, Patrick J. Coles
Applications such as simulating complicated quantum systems or solving large-scale linear algebra problems are very challenging for classical computers due to the extremely high computational cost.
no code implementations • 31 Dec 2018 • Kosuke Mitarai, Keisuke Fujii
However, in certain cases, the indirect measurement can be reduced to the direct measurement, where a quantum state is destructively measured.
Quantum Physics
5 code implementations • 2 Mar 2018 • Kosuke Mitarai, Makoto Negoro, Masahiro Kitagawa, Keisuke Fujii
Hybridizing a low-depth quantum circuit and a classical computer for machine learning, the proposed framework paves the way toward applications of near-term quantum devices for quantum machine learning.
Quantum Physics