info:eu-repo/semantics/article
Quantum Non-Markovian Processes Break Conditional Past-Future Independence
Fecha
2018-12Registro en:
Budini, Adrian Adolfo; Quantum Non-Markovian Processes Break Conditional Past-Future Independence; American Physical Society; Physical Review Letters; 121; 24; 12-2018; 240401-240401
0031-9007
CONICET Digital
CONICET
Autor
Budini, Adrian Adolfo
Resumen
For classical Markovian stochastic systems, past and future events become statistically independent when conditioned to a given state at the present time. Memory non-Markovian effects break this condition, inducing a nonvanishing conditional past-future correlation. Here, this classical memory indicator is extended to a quantum regime, which provides an operational definition of quantum non-Markovianity based on a minimal set of three time-ordered quantum system measurements and postselection. The detection of memory effects through the measurement scheme is univocally related to departures from Born-Markov and white noise approximations in quantum and classical environments, respectively.