54 citations · 149 across the 8 of their papers we have counts for
8 papers
Tomographic measurement data of states that never existed
Julian Göttsch, Stephan Grebien, Felix Pein +6
Microscopic Schr{ö}dinger cat states are generated from quantum correlated fields using a probabilistic heralding photon subtraction event. Subsequent quantum state tomography prov…
Reconstruction of photon number conditioned states using phase randomized homodyne measurements
H. M. Chrzanowski, S. M. Assad, Julien Bernu +5
We experimentally demonstrate the reconstruction of a photon number conditioned state without using a photon number discriminating detector. By using only phase randomized homodyne…
Anomalous Quantum Correlations of Squeezed Light
B. Kühn, W. Vogel, M. Mraz +2
Three different noise moments of field strength, intensity, and their correlations are simultaneously measured. For this purpose a homodyne cross-correlation measurement [W. Vogel,…
Continuous sampling of the squeezed state nonclassicality
E. Agudelo, J. Sperling, W. Vogel +3
We report the direct -- continuous in phase -- sampling of a regularized function, the so-called nonclassicality quasiprobability, for squeezed light. Through their negativitie…
Witnessing the degree of nonclassicality of light
M. Mraz, J. Sperling, W. Vogel +1
We introduce an experimentally accessible method to measure a unique degree of nonclassicality, based on the quantum superposition principle, for arbitrary quantum states. We formu…
Demonstrating various quantum effects with two entangled laser beams
B. Hage, J. Janoušek, S. Armstrong +5
We report on the preparation of entangled two mode squeezed states of yet unseen quality. Based on a measurement of the covariance matrix we found a violation of the Reid and Drumm…
Direct Sampling of Negative Quasiprobabilities of a Squeezed State
T. Kiesel, W. Vogel, B. Hage +1
Although squeezed states are nonclassical states, so far, their nonclassicality could not be demonstrated by negative quasiprobabilities. In this work we derive pattern functions f…
Photon number discrimination without a photon counter and its application to reconstructing non-Gaussian states
H. M. Chrzanowski, J. Bernu, B. M. Sparkes +5
The non-linearity of a conditional photon-counting measurement can be used to `de-Gaussify' a Gaussian state of light. Here we present and experimentally demonstrate a technique fo…