Maria Chekhova is head of the Quantum Radiation group and Single-Photon Technology unit at the Max Planck Institute for the Science of Light in Erlangen, Germany. She is also part-time affiliated with M.V. Lomonosov Moscow State University. Her research is focused on the generation and characterization of nonclassical light, obtained via nonlinear optical effects as well as from nano-emitters. Her main achievements are investigation of the polarization properties of single-mode biphotons, observation of the dispersion spreading of a biphoton, generation of bright squeezed vacuum in polarization-entangled states and witnessing its macroscopic entanglement. She is teaching courses on quantum optics and related subjects at the Lomonosov Moscow State University and the University of Erlangen-Nuremberg.