Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Izumida, Wataru"'
Autor:
Aizawa, Takumi, Shinozaki, Motoya, Fujiwara, Yoshihiro, Kumasaka, Takeshi, Izumida, Wataru, Ludwig, Arne, Wieck, Andreas D., Otsuka, Tomohiro
The quantum cellular automata (QCA) effect is a transition in which multiple electron move coordinately by Coulomb interactions and observed in multiple quantum dots. This effect will be useful for realizing and improving quantum cellular automata an
Externí odkaz:
http://arxiv.org/abs/2403.06333
Autor:
Moca, Cătălin Paşcu, Izumida, Wataru, Dóra, Balázs, Legeza, Örs, Asbóth, János K., Zaránd, Gergely
Publikováno v:
Phys. Rev. Lett. 125, 056401 (2020)
For most chiralities, semiconducting nanotubes display topologically protected end states of multiple degeneracies. We demonstrate using density matrix renormalization group based quantum chemistry tools that the presence of Coulomb interactions indu
Externí odkaz:
http://arxiv.org/abs/1909.08400
Publikováno v:
Phys. Rev. B 99, 115409 (2019)
The single-wall carbon nanotube (SWNT) can be a one-dimensional topological insulator, which is characterized by a $\mathbb{Z}$-topological invariant, winding number. Using the analytical expression for the winding number, we classify the topology fo
Externí odkaz:
http://arxiv.org/abs/1812.06399
Publikováno v:
Phys. Rev. B 100, 155417 (2019)
The full spatial 3D profile of Majorana bound states (MBS) in a nanowire-like setup featuring a semiconducting carbon nanotube (CNT) as the central element is discussed. By accurate tight-binding calculations we show that the chiral nature of the CNT
Externí odkaz:
http://arxiv.org/abs/1812.02796
Publikováno v:
Phys. Rev. B 97, 075141 (2018)
Engineering effective p-wave superconductors hosting Majorana quasiparticles (MQPs) is nowadays of particular interest, also in view of the possible utilization of MQPs in fault-tolerant topological quantum computation. In quasi one-dimensional syste
Externí odkaz:
http://arxiv.org/abs/1711.03616
Publikováno v:
J. Phys. Soc. Jpn. 86, 013702 (2017)
The topological phase transition is theoretically studied in a metallic single-wall carbon nanotube (SWNT) by applying a magnetic field $B$ parallel to the tube. The $\mathbb{Z}$ topological invariant, winding number, is changed discontinuously when
Externí odkaz:
http://arxiv.org/abs/1610.05034
We propose an experimental method for a quantum protocol termed quantum energy teleportation (QET), which allows energy transportation to a remote location without physical carriers. Using a quantum Hall system as a realistic model, we discuss the ph
Externí odkaz:
http://arxiv.org/abs/1109.2203
We propose an experimental method for extracting the zero-point energy from a local vacuum state by performing local operations and classical communication (LOCC). We model a quantum Hall edge channel as a quantum entangled many-body channel and the
Externí odkaz:
http://arxiv.org/abs/1101.2766
Autor:
Izumida, Wataru, Grifoni, Milena
Transport in suspended metallic single wall carbon nanotubes in the presence of strong electron-electron interaction is investigated. We consider a tube of finite length and discuss the effects of the coupling of the electrons to the deformation pote
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509597
Autor:
Sakai, Osamu, Izumida, Wataru
We review our recent studies on the Kondo effect in the tunneling phenomena through quantum dot systems. Numerical methods to calculate reliable tunneling conductance are developed. In the first place, a case in which electrons of odd number occupy t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208505