TY  - JOUR
AU  - Fauseweh, Benedikt
AU  - Pasini, Stefano
AU  - Uhrig, Götz S.
TI  - Frequency-modulated pulses for quantum bits coupled to time-dependent baths
JO  - Physical review / A
VL  - 85
IS  - 2
SN  - 1050-2947
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2015-04041
SP  - 022310
PY  - 2012
AB  - We consider the coherent control of a quantum bit by the use of short pulses with finite duration τp. By shaping the pulse, we perturbatively decouple the dynamics of the bath from the dynamics of the quantum bit during the pulse. Such shaped pulses provide single quantum bit gates robust against decoherence which are useful for quantum-information processing. We extend previous results in two ways: (i) we treat frequency-modulated pulses and (ii) we pass from time-independent baths to analytically time-dependent baths. First- and second-order solutions for π and π/2 pulses are presented. They are useful in experiments where amplitude modulation is difficult to realize
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000300081500005
DO  - DOI:10.1103/PhysRevA.85.022310
UR  - https://juser.fz-juelich.de/record/201747
ER  -