10.9k citations
- The University of TokyoJP1.8k papers
- University of TsukubaJP1.7k papers
- The Ohio State UniversityUS1.7k papers
- University of MichiganUS1.6k papers
- University of GenevaCH1.6k papers
- Yale UniversityUS1.6k papers
- University of ChicagoUS1.6k papers
- Centre National de la Recherche ScientifiqueFR1.6k papers
- Lawrence Berkeley National LaboratoryUS1.6k papers
- Argonne National LaboratoryUS1.6k papers
- University of BolognaIT1.6k papers
- University of New MexicoUS1.6k papers
6 papers · 2 filters
Crossover from classical to quantum behavior of Duffing oscillator through "pseudo-Lyapunov exponent"
Yukihiro Ota, Ichiro Ohba
We discuss the quantum--classical correspondence in a specific dissipative chaotic system, Duffing oscillator. We quantize it on the basis of quantum state diffusion (QSD) which is…
A New Symmetric Expression of Weyl Ordering
Kazuyuki Fujii, Tatsuo Suzuki
For the creation operator $\adag $ and the annihilation operator of a harmonic oscillator, we consider Weyl ordering expression of $(\adag a)^n$ and obtain a new symmetric expr…
Kraus representation in the presence of initial correlations
Hiroyuki Hayashi, Gen Kimura, Yukihiro Ota
We examine the validity of the Kraus representation in the presence of initial correlations and show that it is assured only when a joint dynamics is locally unitary.
Optimization of a Neutron-Spin Test of the Quantum Zeno Effect
Paolo Facchi, Yoichi Nakaguro, Hiromichi Nakazato +3
A neutron-spin experimental test of the quantum Zeno effect (QZE) is discussed from a practical point of view, when the nonideal efficiency of the magnetic mirrors, used for filter…
Purification through Zeno-like Measurements
Hiromichi Nakazato, Tomoko Takazawa, Kazuya Yuasa
A series of frequent measurements on a quantum system (Zeno-like measurements) is shown to result in the ``purification'' of another quantum system in interaction with the former.…
The Bloch Vector for N-Level Systems
Gen Kimura
We determine the set of the Bloch vectors for N-level systems, generalizing the familiar Bloch ball in 2-level systems. An origin of the structural difference from the Bloch ball i…