Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 26: Quantum Optics IV
Q 26.3: Vortrag
Dienstag, 1. März 2016, 15:00–15:15, f442
Optical Harmonic Generation from Bright Squeezed Vacuum — •Kirill Spasibko1,2,3, Viktor Krutyanskiy3, Denis Kopylov3, Tatiana Murzina3, Maria Chekhova1,2,3, and Gerd Leuchs1,2 — 1MPI for the Science of Light, Erlangen, Germany — 2FAU Erlangen-Nürnberg, Erlangen, Germany — 3M.V.Lomonosov MSU, Moscow, Russia
Bright squeezed vacuum (BSV) is a macroscopic but still highly non-classical state of light. Its non-classical features include quadrature and two-mode squeezing. Moreover with this state even the Bell inequalities could be, in principle, violated. Due to the high brightness, BSV is very attractive for any nonlinear light-matter interactions, where it provides much higher efficiency than faint non-classical states of light.
The simplest case is the generation of optical harmonics. Usually it is done with laser beams that have coherent statistics. Depending on the conditions, single-mode BSV has thermal or superbunched statistics. Such statistics leads to the enhancement in the generation of the m-th harmonic by a factor of m! or (2m-1)!! compared to coherent light with the same mean intensity. For example, for the generation of the second (third) harmonics the enhancement factors are 2 (6) and 3 (15). Thus, BSV offers higher sensitivity in nonlinear interactions with the same mean intensity, which is important for fragile samples.
Here we study the generation of the second and third harmonics from the filtered single-mode and multimode BSV radiation. We compare harmonics generation from single-mode superbunched BSV, single-mode BSV with thermal statistics, and multimode BSV mimicking coherent radiation.