Engineering Quantum Jump Superoperators for Single Photon Detectors

Abstract

We study the back-action of a single photon detector on the electromagnetic field upon a photodetection by considering a microscopic model in which the detector is constituted of a sensor and an amplification mechanism. Using the quantum trajectories approach we determine the Quantum Jump Superoperator (QJS) that describes the action of the detector on the field state immediately after the photocount. The resulting QJS consists of two parts: the bright counts term, representing the real photoabsorptions, and the dark counts term, representing the amplification of intrinsic excitations inside the detector. First we compare our results for the counting rates to experimental data, showing a good agreement. Then we point out that by modifying the field frequency one can engineer the form of QJS, obtaining the QJS's proposed previously in an ad hoc manner.

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• Inclusion of non-idealities in the continuous photodetection model
• Smooth quantum-classical transition in photon subtraction and addition processes
• AMENDART in Markovian circuit QED
• Interaction of a single mode field cavity with the 1D XY model: Energy spectrum
• Energy spectra of a spin-$\frac{1}{2}$ XY spin molecule interacting with a single mode field cavity: Numerical study
• The Photodetection Process under the Conditions of an Imperfect Measurement Device
• Continuous photodetection model: quantum jump engineering and hints for experimental verification