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Non-Gaussian dephasing in flux qubits due to 1/f-noise
Y. M. Galperin, B. L. Altshuler, J. Bergli +2
Recent experiments by F. Yoshihara et al. [Phys. Rev. Lett. 97, 167001 (2006)] and by K. Kakuyanagi et al. (cond-mat/0609564) provided information on decoherence of the echo signal…
Negative Echo in the Density Evolution of Ultracold Fermionic Gases
F. Fumarola, Y. Ahmadian, I. L. Aleiner +1
We predict a nonequilibrium critical phenomenon in the space-time density evolution of a fermionic gas above the temperature of transition into the superfluid phase. On the BCS sid…
Anti-Kondo regime of charge transport through a double dot molecule
Richard Berkovits, Boris Altshuler
The conductance through a serial double dot structure for which the inter-dot tunneling is stronger than the tunneling to the leads is studied using the numerical density matrix re…
Quantum versus classical hyperfine-induced dynamics in a quantum dot
W. A. Coish, E. A. Yuzbashyan, B. L. Altshuler +1
In this article we analyze spin dynamics for electrons confined to semiconductor quantum dots due to the contact hyperfine interaction. We compare mean-field (classical) evolution…
The Riches of the Elementary Fluxbrane Solution
Boris Altshuler
The conventional approach to calculation of the radion effective potential in the string theory inspired models with magnetic fluxbrane throat-like space-time compactified on a sph…
Kondo effect in a one-electron double quantum dot: Oscillations of the Kondo current in a weak magnetic field
D. M. Schröer, A. K. Hüttel, K. Eberl +3
We present transport measurements of the Kondo effect in a double quantum dot charged with only one or two electrons, respectively. For the one electron case we observe a surprisin…