36 citations
- Hokkaido UniversityJP8 papers
- University of HoustonUS8 papers
- Hiroshima UniversityJP2 papers
- National Institute for Materials ScienceJP2 papers
- Dartmouth CollegeUS1 paper
- Kyoto Sangyo UniversityJP1 paper
- Los Alamos National LaboratoryUS1 paper
- Nara University of EducationJP1 paper
- National Institute of Technology, Toyama CollegeJP1 paper
- Tohoku UniversityJP1 paper
4 papers · 1 filter
Analogue black-white hole solitons in travelling wave parametric amplifiers with superconducting nonlinear asymmetric inductive elements
Haruna Katayama, Noriyuki Hatakenaka, Toshiyuki Fujii +1
We show that existing travelling wave parametric amplifier (TWPA) setups, using superconducting nonlinear asymmetric inductive elements (SNAILs), admit soliton solutions that act a…
Theoretical Studies on Quantum Walks with a Time-varying Coin
Haruna Katayama, Noriyuki Hatakenaka, Toshiyuki Fujii
Quantum walks can reconstruct quantum algorithms for quantum computation, where the precise controls of quantum state transfers between arbitrary distant sites are required. Here,…
Time Operators and Time Crystals
K. Nakatsugawa, T. Fujii, A. Saxena +1
We investigate time operators in the context of quantum time crystals in ring systems. A generalized commutation relation called the generalized weak Weyl relation is used to deriv…
Quantum Time Crystal By Decoherence: Proposal With Incommensurate Charge Density Wave Ring
Keiji Nakatsugawa, Toshiyuki Fujii, Satoshi Tanda
We show that time translation symmetry of a ring system with a macroscopic quantum ground state is broken by decoherence. In particular, we consider a ring-shaped incommensurate ch…