Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\25517102
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2014 ; 4
(ä): 7443
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Extracting information from qubit-environment correlations
#MMPMID25517102
Reina JH
; Susa CE
; Fanchini FF
Sci Rep
2014[Dec]; 4
(ä): 7443
PMID25517102
show ga
Most works on open quantum systems generally focus on the reduced physical system
by tracing out the environment degrees of freedom. Here we show that the qubit
distributions with the environment are essential for a thorough analysis, and
demonstrate that the way that quantum correlations are distributed in a quantum
register is constrained by the way in which each subsystem gets correlated with
the environment. For a two-qubit system coupled to a common dissipative
environment E, we show how to optimise interqubit correlations and entanglement
via a quantification of the qubit-environment information flow, in a process
that, perhaps surprisingly, does not rely on the knowledge of the state of the
environment. To illustrate our findings, we consider an optically-driven
bipartite interacting qubit AB system under the action of E. By tailoring the
light-matter interaction, a relationship between the qubits early stage
disentanglement and the qubit-environment entanglement distribution is found. We
also show that, under suitable initial conditions, the qubits energy asymmetry
allows the identification of physical scenarios whereby qubit-qubit entanglement
minima coincide with the extrema of the AE and BE entanglement oscillations.