Single photon quantum filtering using non-Markovian embeddings
John Edward Gough, M. R. James, Hendra I. Nurdin · Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences · 2012
We determine quantum master and filter equations for continuous measurement of systems coupled to input fields in certain non-classical continuous-mode states, specifically single photon states. The quantum filters are shown to be derivable from an embedding into a larger non-Markovian system, and are given by a system of coupled stochastic differential equations.