3.3k citations · 6.9k across the 56 of their papers we have counts for
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Experimental quantum kernel machine learning with nuclear spins in a solid
Takeru Kusumoto, Kosuke Mitarai, Keisuke Fujii +2
We employ so-called quantum kernel estimation to exploit complex quantum dynamics of solid-state nuclear magnetic resonance for machine learning. We propose to map an input to a fe…
Orbital optimized unitary coupled cluster theory for quantum computer
Wataru Mizukami, Kosuke Mitarai, Yuya O. Nakagawa +3
We propose an orbital optimized method for unitary coupled cluster theory (OO-UCC) within the variational quantum eigensolver (VQE) framework for quantum computers. OO-UCC variatio…
Constructing a virtual two-qubit gate by sampling single-qubit operations
Kosuke Mitarai, Keisuke Fujii
We show a certain kind of non-local operations can be simulated by sampling a set of local operations with a quasi-probability distribution when the task of a quantum circuit is to…
Variational Quantum Algorithm for Non-equilibrium Steady States
Nobuyuki Yoshioka, Yuya O. Nakagawa, Kosuke Mitarai +1
We propose a quantum-classical hybrid algorithm to simulate the non-equilibrium steady state of an open quantum many-body system, named the dissipative-system Variational Quantum E…
Theory of analytical energy derivatives for the variational quantum eigensolver
Kosuke Mitarai, Yuya O. Nakagawa, Wataru Mizukami
The variational quantum eigensolver (VQE) and its variants, which is a method for finding eigenstates and eigenenergies of a given Hamiltonian, are appealing applications of near-t…
Subspace Variational Quantum Simulator
Kentaro Heya, Ken M Nakanishi, Kosuke Mitarai +8
Quantum simulation is one of the key applications of quantum computing, which accelerates research and development in the fields such as chemistry and material science. The recent…
Methodology for replacing indirect measurements with direct measurements
Kosuke Mitarai, Keisuke Fujii
In quantum computing, the indirect measurement of unitary operators such as the Hadamard test plays a significant role in many algorithms. However, in certain cases, the indirect m…