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Updated: Jul 6, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Non-markovian continuous quantum measurement of retarded observables
1Research Institute for Particle and Nuclear Physics H-1525 Budapest 114, POB 49, Hungary. diosi@rmki.kfki.hu
Abstract:
We reconsider the non-Markovian time-continuous measurement of a Heisenberg observable x[over ] and show for the first time that it can be realized by an infinite set of entangled von Neumann detectors. The concept of continuous readout is introduced and used to rederive the non-Markovian stochastic Schrödinger equation. We can prove that, contrary to recent doubts, the resulting non-Markovian quantum trajectories are true single system trajectories and correspond to the continuous measurement of a retarded functional of x[over ].
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