Spectra of ultrabroadband squeezed pulses and the finite-time Unruh-Davies effect
arXiv:1810.08273 · doi:10.1103/PhysRevLett.122.053604
Abstract
We study spectral properties of quantum radiation of ultimately short duration. In particular, we introduce a continuous multimode squeezing operator for the description of subcycle pulses of entangled photons generated by a coherent-field driving in a thin nonlinear crystal with second order susceptibility. We find the ultrabroadband spectra of the emitted quantum radiation perturbatively in the strength of the driving field. These spectra can be related to the spectra expected in an Unruh-Davies experiment with a finite time of acceleration. In the time domain, we describe the corresponding behavior of the normally ordered electric field variance.
arXiv comment11 pages, 5 figures
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- Theory of quantum-vacuum detection
- Realizing an Unruh-DeWitt detector through electro-optic sampling of the electromagnetic vacuum
- Quantum simulation of Unruh-DeWitt detectors with nonlinear optics
- Subcycle tomography of quantum light