Direct Detection of Vacuum Fluctuations of the Multi-Terahertz Electric Field

• DOI: 10.1364/nlo.2015.nm3a.7
• Publication Date: 2015-07-20T10:52:29Z
• Authors: Alfred Leitenstorfer; Claudius Riek; Denis V. Seletskiy
• Keywords: Quantum fluctuation

We show that ultrabroadband electro-optic sampling in free space is able to directly detect the vacuum fluctuations of the electric field, opening up a time-domain approach to quantum statistics that operates on the sub-cycle scale.