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Physics Colloquium - Dr Dmitry Strekalov

Monday, 10 February 2020

Physics Department
Colloquium

Dr Dmitry Strekalov


Senior Reseasrch Scientist

Jet Propulsion Lab

Caltech


"Whispering gallery resonators as versatile sources of quantum light"


Optical resonators capable of confining light for a long time in a small volume are beneficial for nonlinear optics applications. This makes them also useful in quantum optics, which hinges on the optical nonlinearity. This presentation is focused on the optical resonators based on continuous total internal reflection: the whispering gallery resonators. Being a broadband and intrinsically lossless phenomenon, total internal reflection provides an extremely high optical quality factor for a wide spectrum of electromagnetic waves ranging from microwaves to ultraviolet. This aspect is very important for nonlinear optics phenomena concerned with a significant change of the wavelength, for example generation of optical harmonics and parametric down conversion. We will discuss these and other nonlinear processes in whispering gallery resonators making the emphasis on producing nonclassical optical states, such as squeezed, single-photon, entangled, and others. Remarkably, the narrow and variable bandwidth combined with the spectral tunability of the whispering gallery resonators makes such light easily compatible with atomic transitions and other quantum systems, thereby offering an enabling technology for various quantum information applications.

WHEN: Monday 10 February 2020
WHERE: Room 314, Science 3 Building
TIME: 3.00 pm–4.00 pm

All interested are welcome to attend

Light refreshments to follow in Common Room