Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 13: Posters: Quantum Optics and Photonics I
Q 13.53: Poster
Monday, March 9, 2020, 16:30–18:30, Empore Lichthof
Phonon pair creation by tearing apart quantum vacuum fluctuations — •Florian Haße1, Deviprasath Palani1, Frederick Hakelberg1, Philip Kiefer1, Matthias Wittemer1, Ulrich Warring1, Tobias Schaetz1, Christian Fey2, and Ralf Schützhold3 — 1Albert-Ludwigs-Universität Freiburg, Physikalisches Institut, Hermann-Herder-Strasse 3, 79104 Freiburg — 2Universität Hamburg, Fachbereich Physik, Luruper Chaussee 149, 22761 Hamburg — 3Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden
We switch the trapping field of two ions sufficiently fast to tear apart quantum vacuum fluctuations and, thereby, create squeezed states of motion [1]. This process can be interpreted as an experimental analog to the particle pair creation during a cosmic inflation in the early universe [2] and is accompanied by the formation of entanglement in the ions’ motional degree of freedom [3]. Hence, our platform allows studying the causal connections of squeezing, pair creation, and entanglement and might permit to cross-fertilise between concepts in cosmology and applications of quantum information processing.
[1] Wittemer, M. et al. Phys. Rev. Lett. 123, 180502 (2019).
[2] Schuetzhold, R. et al., Phys. Rev. Lett. 99, 201301 (2007)
[3] Fey, C. et al., Phys. Rev. A 98, 033407 (2018)