Development of quantum light sources for the emission of temporally correlated photon pairs

Nyomtatóbarát változatNyomtatóbarát változat
PhD típus: 
Fizikai Tudományok Doktori Iskola
Erdei Gábor
Email cím:
Department of Atomic Physics
egyetemi docens
Tudományos fokozat: 

The Department of Atomic Physics takes part in the HunQuTech project launched in 2017 for the study and development of quantum optical processes and technologies. This rapidly growing branch of optics-photonics is aimed at realizing devices and methods capable of performing quantum computations, telecommunication as well as cryptography. A crucial element of the latter area is the light source, which should emit entangled photon pairs of temporally correlated properties (i.e. energy and polarization state), also known as twin-photons.

For these purposes alternative solutions exist both in the literature and in the form of industrial products. They all share common drawbacks, such as low level of integration, instability, sensitivity to environtmental effects, lack of modularity, complicated setup, long and awkward alignment process and most of all insufficient photon flux.

The task of the applicant is to get a deep learning of the underlying physical phenomena (light propagation in anisotropic media, nonlinear effects, parametric photon down conversion etc.), build a twin-photon light source starting from the Sagnac-layout and improve it step by step finding solutions for as many of the above challenges as possible. Their task is complex: it comprises the optical simulation of light beams and photonic processes, thermal analysis of opto-mechanical structures, assessment of sensitivity to vibrations/deformations, designing experiments and opto-mechanical systems, assembling, aligning, testing and measuring diverse physical properties.



Good English skills, ability for abstract thinking, fundamental knowledge in optics, basic understanding of quantum optical theories, capability to use simulation and mathematic software (Zemax, Comsol, MatLAB) and CAD programs (Creo or SolidWorks), high-level laboratory practice and a keen to progress autonomously.


Munkahely neve: 
BME Atomfizika Tanszék
Munkahely címe: 
1111 Budapest, Budafoki út 8.