Erlangen 2018 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Quantum Information (Coherence and Entanglement)
Q 56.5: Vortrag
Donnerstag, 8. März 2018, 11:30–11:45, K 1.019
Subcycle tracing of ultrabroadband squeezed light transients from nonlinear crystals — •Matthias Kizmann1, Thiago Lucena de M. Guedes1, Philipp Sulzer1, Denis V. Seletskiy2, Andrey S. Moskalenko1, Alfred Leitenstorfer1, and Guido Burkard1 — 1Department of Physics and Center for Applied Photonics, University of Konstanz, Germany — 2Department of Engineering Physics, Polytechnique Montréal, C-6079 Montréal, Canada
The electro-optic effect can be used to sample the vacuum fluctuations of the electric field [1]. Moreover, this technique provides a way to study the dynamics of the variance of the probed field with subcycle resolution. Recently, this was shown by sampling the relative differential noise patterns of a transient squeezed vacuum state generated in a thin nonlinear crystal [2]. We demonstrate theoretically that the quantum dynamics of ultrabroadband squeezed light transients generated in thin nonlinear crystals can be determined for certain characteristic shapes of the driving few-cycle coherent pulses. The squeezing and anti-squeezing can be interpreted as a result of a change in the local run of time, induced by the driving pulse. Furthermore, we predict that the conventionally observed asymmetry between squeezing and more pronounced anti-squeezing in the temporal noise traces, resulting from the product character of Heisenberg's uncertainty relation, can be reversed with specific driving pulses. We argue that this phenomenon can be realized under realistic conditions of the state-of-art experiments.
[1] C. Riek et al., Science 350, 420 (2015).
[2] C. Riek et al., Nature 541, 376 (2017).