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2015 ; 5
(ä): 17520
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Experimental observation of weak non-Markovianity
#MMPMID26627910
Bernardes NK
; Cuevas A
; Orieux A
; Monken CH
; Mataloni P
; Sciarrino F
; Santos MF
Sci Rep
2015[Dec]; 5
(ä): 17520
PMID26627910
show ga
Non-Markovianity has recently attracted large interest due to significant
advances in its characterization and its exploitation for quantum information
processing. However, up to now, only non-Markovian regimes featuring environment
to system backflow of information (strong non-Markovianity) have been
experimentally simulated. In this work, using an all-optical setup we simulate
and observe the so-called weak non-Markovian dynamics. Through full process
tomography, we experimentally demonstrate that the dynamics of a qubit can be
non-Markovian despite an always increasing correlation between the system and its
environment which, in our case, denotes no information backflow. We also show the
transition from the weak to the strong regime by changing a single parameter in
the environmental state, leading us to a better understanding of the fundamental
features of non-Markovianity.