Zobrazeno 1 - 10
of 470
pro vyhledávání: '"Zarcone, M"'
Publikováno v:
Phys. Rev. A 85, 050305(R) (2012)
We show that a flying particle, such as an electron or a photon, scattering along a one-dimensional waveguide from a pair of static spin-1/2 centers, such as quantum dots, can implement a CZ gate (universal for quantum computation) between them. This
Externí odkaz:
http://arxiv.org/abs/1107.4394
Publikováno v:
Phys. Rev. A 82, 052313 (2010)
We investigate whether a two-qubit quantum gate can be implemented in a scattering process involving a flying and a static qubit. To this end, we focus on a paradigmatic setup made out of a mobile particle and a quantum impurity, whose respective spi
Externí odkaz:
http://arxiv.org/abs/1008.2370
Publikováno v:
Phys. Rev. A 82, 030302(R) (2010)
We propose a physical model for generating multipartite entangled states of spin-$s$ particles that have important applications in distributed quantum information processing. Our protocol is based on a process where mobile spins induce the interactio
Externí odkaz:
http://arxiv.org/abs/1003.2171
Publikováno v:
New J. Phys. 11, 113053 (2009)
We present a protocol that sets maximum stationary entanglement between remote spins through scattering of mobile mediators without initialization, post-selection or feedback of the mediators' state. No time-resolved tuning is needed and, counterintu
Externí odkaz:
http://arxiv.org/abs/0909.0832
Publikováno v:
Phys. Rev. B 80, 165313 (2009)
We investigate the time evolution of entanglement in a process where a mobile particle is scattered by static spins. We show that entanglement increases monotonically during a transient and then saturates to a steady-state value. For a quasi-monochro
Externí odkaz:
http://arxiv.org/abs/0812.0755
Publikováno v:
J. Stat. Mech. P1042 (2009)
We investigate how hot-electron fluctuations in n-type Si are affected by the presence of an intense (static) magnetic field in a Hall geometry. By using the Monte Carlo method, we find that the known Hall-effect-induced redistribution of electrons a
Externí odkaz:
http://arxiv.org/abs/0806.4955
Publikováno v:
Phys. Rev. B 75, 205415 (2007)
We investigate the Aharonov-Bohm (AB) interference pattern in the electron transmission through a mesoscopic ring in which two identical non-interacting magnetic impurities are embedded. Adopting a quantum waveguide theory, we derive the exact transm
Externí odkaz:
http://arxiv.org/abs/cond-mat/0612057
Publikováno v:
J. Phys. A: Math. Theor. 40, 7993 (2007)
We consider a one-dimensional (1D) wire along which single conduction electrons can propagate in the presence of two spin-1/2 magnetic impurities. The electron may be scattered by each impurity via a contact-exchange interaction and thus a spin-flip
Externí odkaz:
http://arxiv.org/abs/quant-ph/0611025
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Akademický článek
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