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19942026
most citedKeeping a Quantum Bit Alive by Optimized -Pulse Sequences

711 citations · 5.5k across the 188 of their papers we have counts for

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Showing 2008Show all

6 papers · 1 filter

cond-mat.str-el2008★ 20 cited

Generic susceptibilities of the half-filled Hubbard model in infinite dimensions

Carsten Raas, Götz S. Uhrig

Around a metal-to-insulator transition driven by repulsive interaction (Mott transition) the single particle excitations and the collective excitations are equally important. Here…

quant-ph2008★ 101 cited

Concatenated Control Sequences based on Optimized Dynamic Decoupling

Götz S. Uhrig

Two recent developments in quantum control, concatenation and optimization of pulse intervals, are combined to yield a strategy to suppress unwanted couplings in quantum systems to…

cond-mat.str-el2008★ 36 cited

Emergent Collective Modes and Kinks in Electronic Dispersions

Carsten Raas, Patrick Grete, Götz S. Uhrig

Recently, it was shown that strongly correlated metallic fermionic systems [Nature Phys. 3, 168 (2007)] generically display kinks in the dispersion of single fermions without the c…

cond-mat.str-el2008★ 29 cited

Collective orbital excitations in orbitally ordered YVO3 and HoVO3

E. Benckiser, R. Rückamp, T. Möller +6

We study orbital excitations in the optical absorption spectra of YVO3 and HoVO3. We focus on an orbital absorption band observed at 0.4 eV for polarization E parallel c. This feat…

quant-ph2008★ 16 cited

Numerical Analysis of Optimized Coherent Control Pulses

P. Karbach, S. Pasini, G. S. Uhrig

Numerically we simulate the effect of optimized coherent control pulses with a finite duration on a qubit in a bath of spins. The pulses of finite duration are compared with ideal…

quant-ph2008★ 168 cited

Exact Results on Dynamical Decoupling by -Pulses in Quantum Information Processes

Götz S. Uhrig

The aim of dynamical decoupling consists in the suppression of decoherence by appropriate coherent control of a quantum register. Effectively, the interaction with the environment…