Abstract: This paper is concerned with the analysis of linear quantum optical networks. It provides a systematic approach to the construction a model for a given quantum network in terms of a system of quantum stochastic differential equations. This corresponds to a classical state space model. The linear quantum optical networks under consideration consist of interconnections between optical c...

Feedback systems are important in applications, for example, optical feedback lasers, phase-locked frequency synthesizers and wave equations with feedback stabilization at the boundary, and the problem regarding sensitivity and robustness of the feedback system with respect to time delays has attracted a lot of attention. In this paper we continue the discussion on sensitivity and robustness of...

Atomic ion traps offer a promising architecture for scalable quantum information processing. External cavity diode lasers yield stable output frequency and narrow spectral bandwidth by exploiting the sensitivity of diode lasers to external optical feedback. This project aims to design and develop a high-coherence external cavity diode laser used to depopulate Yb171+ from the undesirable 2F7/2 o...

Near field Scanning Optical Microscopy using heterodyne optical feedback on Erdoped DFB fiber laser at =1.55μm is investigated for optical characterizations of plasmonic waveguides. The experimental results are compared with FDTD numerical models. OCIS : 180.4243 (Near field microscopy) 250.5403 (Plasmonics) 310.2790 (Guided waves) Laser Feedback Interferometry (LFI) has been already investiga...

We experimentally investigate the RF linewidth and timing jitter over a wide range of delay tuning in a self-mode-locked two-section quantum dash lasers emitting at ~ 1.55μm and operating at ~ 21 GHz repetition rate subject to single and dual optical feedback into gain section. Various feedback conditions are investigated and optimum levels determined for narrowest linewidth and reduced timing ...