Facets of Correlated Non‐Markovian Channels

Abstract

AbstractThe domain of correlated non‐Markovian channels are investigated, exploring the potential memory arising from the correlated action of channels and the inherent memory due to non‐Markovian dynamics. The impact of channel correlations is studied using different non‐Markovianity indicators and measures. In addition, the dynamical aspects of correlated non‐Markovian channels, including entanglement dynamics as well as changes in the volume of accessible states, are explored. The analysis is presented for both unital and non‐unital correlated channels. A new correlated channel constructed with modified Ornstein–Uhlenbeck noise (OUN) is also presented and explored. Further, the geometrical effects of the non‐Markovianity of the correlated non‐Markovian channels are discussed with a study of change in the volume of the accessible states. The link between the correlation factor and error correction success probability is highlighted.