Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Hirofumi Nishi"'
Autor:
Yusuke Hama, Hirofumi Nishi
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-32 (2024)
Abstract Near-term quantum computers have been built as intermediate-scale quantum devices and are fragile against quantum noise effects, namely, NISQ devices. Traditional quantum-error-correcting codes are not implemented on such devices and to perf
Externí odkaz:
https://doaj.org/article/4c2f377a4ba248019e34661a4130f1f8
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract Quantum approximate optimization algorithm (QAOA) is a promising hybrid quantum-classical algorithm to solve combinatorial optimization problems in the era of noisy intermediate-scale quantum computers. Recently it has been revealed that war
Externí odkaz:
https://doaj.org/article/c7705909b6794f85a070044e827c6523
Publikováno v:
npj Quantum Information, Vol 9, Iss 1, Pp 1-9 (2023)
Abstract This study proposes a nonvariational scheme for geometry optimization of molecules for the first-quantized eigensolver, which is a recently proposed framework for quantum chemistry using probabilistic imaginary-time evolution (PITE). In this
Externí odkaz:
https://doaj.org/article/40b3d9d534f3458da706f349e4d2e88b
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043048 (2023)
Ground-state preparation is an important task in quantum computation. The probabilistic imaginary-time evolution (PITE) method is a promising candidate for preparing the ground state of the Hamiltonian, which comprises a single ancilla qubit and forw
Externí odkaz:
https://doaj.org/article/f26a5023be1d41a6b6d8dc7ce8485351
Publikováno v:
npj Quantum Information, Vol 7, Iss 1, Pp 1-7 (2021)
Abstract The imaginary-time evolution method is a well-known approach used for obtaining the ground state in quantum many-body problems on a classical computer. A recently proposed quantum imaginary-time evolution method (QITE) faces problems of deep
Externí odkaz:
https://doaj.org/article/2a1286c73f1745b082f552062a7cf304
Publikováno v:
Physical Review Research, Vol 4, Iss 3, p 033121 (2022)
Imaginary-time evolution (ITE) on a quantum computer is a promising formalism for obtaining the ground state of a quantum system. The probabilistic ITE (PITE) exploits measurements to implement nonunitary operations, and it can avoid the restriction
Externí odkaz:
https://doaj.org/article/2f30fd3f0aec4ba686f2640dd750be76
Autor:
Hirofumi Nishi
Publikováno v:
Cogent Economics & Finance, Vol 8, Iss 1 (2020)
This study aims to identify firm characteristics that affect the cross-firm variation in oil–stock interactions. A panel data analysis with a sample of U.S. and Canadian firms reveals that the stock price sensitivity to crude oil price returns is n
Externí odkaz:
https://doaj.org/article/d4cfcdd3917c4d0394c80a736361c2c8
Autor:
Hirofumi Nishi
Publikováno v:
Applied Finance Letters, Vol 8 (2019)
Firms seeking to apply hedge accounting treatment under the Accounting Standards Codification Topic 815 must demonstrate higher hedge effectiveness, for which the regression analysis is commonly used as a testing method. An autoregressive distributed
Externí odkaz:
https://doaj.org/article/225c9e1c1ec3473da6df8fec5a8d6503
Publikováno v:
SSRN Electronic Journal.
Autor:
Hidenori Suzuki, Hideki Nakajima, Tomonori Ichikawa, Ryuta Yasuda, Takeshi Okada, Fuki Goto, Shota Ito, Yasutaka Horiuchi, Yotaro Kitano, Hirofumi Nishikawa, Masashi Fujimoto, Naoki Toma
Publikováno v:
Brain Hemorrhages, Vol 5, Iss 2, Pp 62-68 (2024)
Objective: This retrospective study aimed to analyze the prospectively collected data of computed tomography (CT) perfusion imaging and to examine if clazosentan add-on administration prevented post-subarachnoid hemorrhage (SAH) delayed cerebral micr
Externí odkaz:
https://doaj.org/article/ebfa428915ab4ec891095e2e89b23c83