Characterizing quantum dynamics with initial system-environment correlations

Martin Ringbauer, Christopher J Wood, Kavan Modi, Alexei Gilchrist, Andrew G White, Alessandro Fedrizzi

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56 Citations (Scopus)


We fully characterize the reduced dynamics of an open quantum system initially correlated with its environment. Using a photonic qubit coupled to a simulated environment, we tomographically reconstruct a superchannel - a generalized channel that treats preparation procedures as inputs - from measurement of the system alone. We introduce novel quantitative measures for determining the strength of initial correlations, and to allow an experiment to be optimized in regard to its environment.
Original languageEnglish
Article number090402
Pages (from-to)1-5
Number of pages5
JournalPhysical Review Letters
Issue number9
Publication statusPublished - 2015

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