Periodic Reporting for period 3 - PEQEM (Photonics for engineered quantum enhanced measurement)
Periodo di rendicontazione: 2022-01-01 al 2023-06-30
This project adopts an engineering approach to the disciplines of photonic quantum enhanced sensing and squeezed light quantum optics. We will develop new sensing protocols and implement them in integrated photonics that are tailored to enable miniature, deployable and ultimately low cost sensors that exceed the state of the art through (i) exploitation of the quantum mechanics of light and by (ii) developing the requisite high performance of components in an integrated photonics platform. The methodology is to combine quantum optics of Kerr-nonlinear materials that generate squeezed light and quantum state detection with photonic device engineering. We will benchmark device performance using quantum metrology techniques. By the end of this project, we will have developed all-integrated squeezed light generation and detection technology, that provides enhanced sensors for absorption and phase measurements beyond the shot noise limit --- the hard limit that bounds performance of state of the art “classical” sensors. Applications include next generation quantum metrology experiments, measurement of photo- sensitive samples, precise characterization of photonic components and trace gas detection.
A core component in this capability will be the development of integrated Homodyne detection. Through edge-coupled photodiode geometry and reduction of overall capacitance of the detection by integration with integrated electronics, we aim for enhanced speed performance in electrical Homodyne detection beyond the state of the art that uses top-illuminated PIN diodes and free-space optics.