Stephan Schiller

TL;DR: The quantum state of optical pulses containing single photons is reconstructed using the method of phase-randomized pulsed optical homodyne tomography and shows a strong dip reaching classically impossible negative values around the origin of the phase space.

TL;DR: In this paper, the complete family of squeezed states of light (states that have less uncertainty in one observable than does the vacuum state) have been generated using an optical parametric amplifier, and their density matrices and Wigner functions have been reconstructed from measurements of the quantum statistics of their electric fields.

TL;DR: The essence of the method is the use of two combs of slightly different mode spacing to achieve spectral resolution, which has advantages of speed, frequency resolution, sensitivity, absence of dispersive components, and high spatial resolution.

TL;DR: The Atomic Experiment for Dark Matter and Gravity Exploration (AEDGE) as mentioned in this paper is a space experiment using cold atoms to search for ultra-light dark matter, and to detect gravitational waves in the frequency range between the most sensitive ranges of LISA and the terrestrial LIGO/Virgo/KAGRA/INDIGO experiments.

TL;DR: A new test of Lorentz invariance is performed by comparing the resonance frequencies of two orthogonal cryogenic optical resonators subject to Earth's rotation over approximately 1 yr, improving the best previous result by about 2 orders of magnitude.