4 citations · 5 across the 2 of their papers we have counts for
7 papers
Systematic construction of multi-controlled Pauli gate decompositions with optimal -count
Ken M. Nakanishi, Synge Todo
Multi-controlled Pauli gates are typical high-level qubit operations that appear in the quantum circuits of various quantum algorithms. We find multi-controlled Pauli gate decompos…
Quantum-gate decomposer
Ken M. Nakanishi, Takahiko Satoh, Synge Todo
Efficient decompositions of multi-qubit gates are essential in NISQ applications, where the number of gates or the circuit depth is limited. This paper presents efficient decomposi…
Post-Hartree-Fock method in Quantum Chemistry for Quantum Computer
Yutaka Shikano, Hiroshi C. Watanabe, Ken M. Nakanishi +1
Quantum computational chemistry is a potential application of quantum computers that is expected to effectively solve several quantum-chemistry problems, particularly the electroni…
Qulacs: a fast and versatile quantum circuit simulator for research purpose
Yasunari Suzuki, Yoshiaki Kawase, Yuya Masumura +17
To explore the possibilities of a near-term intermediate-scale quantum algorithm and long-term fault-tolerant quantum computing, a fast and versatile quantum circuit simulator is n…
Sequential minimal optimization for quantum-classical hybrid algorithms
Ken M. Nakanishi, Keisuke Fujii, Synge Todo
We propose a sequential minimal optimization method for quantum-classical hybrid algorithms, which converges faster, is robust against statistical error, and is hyperparameter-free…
Subspace-search variational quantum eigensolver for excited states
Ken M Nakanishi, Kosuke Mitarai, Keisuke Fujii
The variational quantum eigensolver (VQE), a variational algorithm to obtain an approximated ground state of a given Hamiltonian, is an appealing application of near-term quantum c…