91 citations · 674 across the 41 of their papers we have counts for
41 papers
A comprehensive survey on quantum computer usage: How many qubits are employed for what purposes?
Tsubasa Ichikawa, Hideaki Hakoshima, Koji Inui +18
Quantum computers (QCs), which work based on the law of quantum mechanics, are expected to be faster than classical computers in several computational tasks such as prime factoring…
Variational quantum eigensolver with embedded entanglement using a tensor-network ansatz
Ryo Watanabe, Keisuke Fujii, Hiroshi Ueda
In this paper, we introduce a tensor network (TN) scheme into the entanglement augmentation process of the synergistic optimization framework by Rudolph et al. [arXiv:2208.13673] t…
Entanglement bipartitioning and tree tensor networks
Kouichi Okunishi, Hiroshi Ueda, Tomotoshi Nishino
We propose the entanglement bipartitioning approach to design an optimal network structure of the tree-tensor-network (TTN) for quantum many-body systems. Given an exact ground-sta…
Automatic structural optimization of tree tensor networks
Toshiya Hikihara, Hiroshi Ueda, Kouichi Okunishi +2
Tree tensor network (TTN) provides an essential theoretical framework for the practical simulation of quantum many-body systems, where the network structure defined by the connecti…
Extracting a function encoded in amplitudes of a quantum state by tensor network and orthogonal function expansion
Koichi Miyamoto, Hiroshi Ueda
There are quantum algorithms for finding a function satisfying a set of conditions, such as solving partial differential equations, and these achieve exponential quantum speedu…
Automatic quantum circuit encoding of a given arbitrary quantum state
Tomonori Shirakawa, Hiroshi Ueda, Seiji Yunoki
We propose a quantum-classical hybrid algorithm to encode a given arbitrarily quantum state onto an optimal quantum circuit with a finite numbe…