Zobrazeno 1 - 10
of 186
pro vyhledávání: '"Zipper, E."'
Spin related phenomena in quantum nanostructures have attracted recently much interest due to fast growing field of spintronics. In particular complex nanostructures are important as they provide a versatile system to manipulate spin and the electron
Externí odkaz:
http://arxiv.org/abs/1312.6544
Autor:
Kurpas, M., Zipper, E.
We study the entanglement creation between two flux qubits interacting with electromagnetic field modes. No direct interaction between the qubits exists. Entanglement is reached using entanglement swapping method by an interference measurement perfor
Externí odkaz:
http://arxiv.org/abs/0902.2879
Coherent coupling of two qubits mediated by a nonlinear resonator is studied. It is shown that the amount of entanglement accessible in the evolution depends both on the strength of nonlinearity in the Hamiltonian of the resonator and on the initial
Externí odkaz:
http://arxiv.org/abs/0812.3791
Autor:
Kurpas, M., Zipper, E.
Publikováno v:
Eur. Phys. J. D, 50, 201 (2008)
Scalable quantum networks require the capability to create, store and distribute entanglement among distant nodes (atoms, trapped ions, charge and spin qubits built on quantum dots, etc.) by means of photonic channels. We show how the entanglement be
Externí odkaz:
http://arxiv.org/abs/0807.1799
Publikováno v:
J. Phys.: Condens. Matter 20 (2008) 275219
The mechanism for entanglement of two flux qubits each interacting with a single mode electromagnetic field is discussed. By performing a Bell state measurements (BSM) on photons we find the two qubits in an entangled state depending on the system pa
Externí odkaz:
http://arxiv.org/abs/0712.1661
The possibility of making a flux qubit on nonsuperconducting mesoscopic ballistic quasi 1D ring is discussed. We showed that such ring can be effectively reduced to a two-state system with two external control parameters. The two states carry opposit
Externí odkaz:
http://arxiv.org/abs/cond-mat/0609134
A semi-phenomenological model is proposed to study dynamics and stedy states of magnetic fluxes and currents in mesoscopic rings and cylinders at non-zero temperature. The model is based on a Langevin equation for flux subject to zero-mean thermal eq
Externí odkaz:
http://arxiv.org/abs/cond-mat/0206478
Persistent currents driven by a static magnetic flux parallel to the carbon nanotube axis are investigated. Owing to the hexagonal symmetry of graphene the Fermi contour expected for a 2D-lattice reduces to two points. However the electron or hole do
Externí odkaz:
http://arxiv.org/abs/cond-mat/0205184
Autor:
Zipper, E., Lisowski, M.
A mesoscopic system of cylindrical geometry made of a metal or a semiconductor is shown to exhibit features of a quantum coherent state. It is shown that magnetostatic interaction can play an important role in mesoscopic systems leading to an ordered
Externí odkaz:
http://arxiv.org/abs/cond-mat/0005279
A microscopic Hamiltonian of the magnetostatic interaction is discussed. This long-range interaction can play an important role in mesoscopic systems leading to an ordered ground state. The self-consistent mean field approximation of the magnetostati
Externí odkaz:
http://arxiv.org/abs/cond-mat/9812319