12 citations · 31 across the 8 of their papers we have counts for
8 papers
Jarlskog's Parametrization of Unitary Matrices and Qudit Theory
Kazuyuki Fujii, Kunio Funahashi, Takayuki Kobayashi
In the paper (math-ph/0504049) Jarlskog gave an interesting simple parametrization to unitary matrices, which was essentially the canonical coordinate of the second kind in the Lie…
Comment on "A Recursive Parametrisation of Unitary Matrices"
Kazuyuki Fujii
In this note we make a comment on the paper by Jarlskog (math-ph/0504049) in which she gave a parametrisation to unitary matrices. Namely, we show that her recursive method is esse…
From Quantum Optics to Non-Commutative Geometry : A Non-Commutative Version of the Hopf Bundle, Veronese Mapping and Spin Representation
Kazuyuki Fujii
In this paper we construct a non-commutative version of the Hopf bundle by making use of Jaynes-Commings model and so-called Quantum Diagonalization Method. The bundle has a kind o…
Jaynes-Cummings Model and a Non-Commutative "Geometry" : A Few Problems Noted
Kazuyuki Fujii
In this paper we point out that the Jaynes-Cummings model without taking a renonance conditon gives a non-commutative version of the simple spin model (including the parameters …
Explicit Form of the Evolution Operator for the Four Atoms Tavis-Cummings Model
Kazuyuki Fujii, Kyoko Higashida, Ryosuke Kato +2
In this letter the explicit form of evolution operator for the four atoms Tavis-Cummings model is given.
Explicit Form of Evolution Operator of Three Atoms Tavis-Cummings Model
Kazuyuki Fujii, Kyoko Higashida, Ryosuke Kato +2
In this letter the explicit form of evolution operator of three atoms Tavis-Cummings model is given, which is a generalization of the paper quant-ph/0403008.