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Quantum walk on the generalized birkhoff polytope graph
(2021-10-01)
We study discrete-time quantum walks on generalized Birkhoff polytope graphs (GBPGs), which arise in the solution-set to certain transportation linear programming problems (TLPs). It is known that quantum walks mix at most ...
DC voltage profile of a 1D pumped wire with two dynamical and one static impurities
(Elsevier Science, 2009-10)
In this work we study the behavior of the voltage profile of a 1D quantum wire with an impurity when transport is induced by two ac voltages that oscillating with a phase lag define a quantum pump. The voltage profile ...
Comment on "Universal Out-of-Equilibrium Transport in Kondo-Correlated Quantum Dots: Renormalized Dual Fermions on the Keldysh Contour"
(Amer Physical Soc, 2013-08)
It is shown that the lesser and greater self energies and Green functions calculated in a recent work on universal noequilibrium transport in interacting quantum dots [E. Mu~noz, C. J. Bolech, and S. Kirchner, Phys. Rev. ...
Classical counterparts of quantum attractors in generic dissipative systems
(American Physical Society, 2017-06)
In the context of dissipative systems, we show that for any quantum chaotic attractor a corresponding classical chaotic attractor can always be found. We provide a general way to locate them, rooted in the structure of the ...
Exactly conserved quasilocal operators for the XXZ spin chain
(Institute of Physics - IOPBristol, 2014-09)
We extend T Prosen’s construction of quasilocal conserved quantities for the XXZ model (2011 Phys. Rev. Lett. 106 217206) to the case of periodic boundary conditions. These quasilocal operators stem from a two-parameter ...
Mesoscopic features in the transport properties of a Kondo-correlated quantum dot in a magnetic field
(IOP Publishing, 2013-12)
We study the transport behavior induced by a small bias voltage through a quantum dot connected to one-channel finite-size wires. We describe the quantum dot using the Hubbard–Anderson impurity model and we obtain solutions ...
Quantitative comparison of Anderson impurity solvers applied to transport in quantum dots
(2020-01-01)
We study the single impurity Anderson model (SIAM) using the equations of motion method (EOM), the non-crossing approximation (NCA), the one-crossing approximation (OCA), and Wilson's numerical renormalization group (NRG). ...
Probing Individual Quantum Dots: Noise in Self-Assembled Systems
(AMER SCIENTIFIC PUBLISHERS, 2009)
In this work we explore the noise characteristics in lithographically-defined two terminal devices containing self-assembled InAs/InP quantum dots. The experimental ensemble of InAs dots show random telegraph noise (RTN) ...
Four-terminal resistance in a clean interacting quantum wire with invasive contacts
(Elsevier Science, 2012-08)
We investigate the behavior of the four-terminal resistance R4 pt in an interacting quantum wire described by a Luttinger liquid with an applied bias voltage V and coupled to two voltage probes. We extend previous results, ...
Nonlinear charge transport in III-N semiconductors: Mobility, diffusion, and a generalized Einstein relation
(Amer Inst PhysicsMelvilleEUA, 2006)