Valerian Thiel

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Valerian Thiel

Postdoctoral Research Assistant

After high school in eastern France, I moved to Paris where I received a bachelor degree in Physics & Chemistry at Universite Pierre & Marie Curie (Paris VI). I consequently was accepted for a master degree at Ecole Normale Superieure de Cachan in experimental and theoretical physics. I finally specialized in quantum physics and obtained my master degree at Ecole Normale Superieure de Paris.
During my last years of College, I realized a few internships in experimental physics, notably in quantum optomechanics and in ultrafast quantum optics, where I eventually did my PhD.
Under the supervision of Nicolas Treps and Claude Fabre, I did a three year PhD working with ultrafast frequency comb in the sub-30 fs regime.

My PhD work was focused on quantum metrology, where we used a modal description of the classical field to realize quantum limited measurements of distance. This was eventually extended to measure the noise of a femtosecond oscillator in a novel manner. The work was centered on multi-wavelength, spectrally-resolved homodyne detection and made use of high finesse synchronous Fabry-Perot cavities. It involved a significant amount of active locking by PID and high frequency modulation of optical elements, such as EOMs, AOMs and piezoelectric actuators.
My current research in centered on the development of novel technologies in quantum optics with applications to quantum information. The work is supported by the European project QCUMBER. It involved time-frequency measurements at the single photon level by using frequency to time and time to frequency convertion, where the detection is done either in the temporal or in the spectral domain.