Engineering the Frequency Spectrum of Bright Squeezed Vacuum via Group Velocity Dispersion in an SU(1,1) Interferometer.
Bright squeezed vacuum, a promising tool for quantum information, can be generated by high-gain parametric down-conversion. However, its frequency and angular spectra are typically quite broad, which is undesirable for applications requiring single-mode radiation. We tailor the frequency spectrum of high-gain parametric down-conversion using an SU(1,1) interferometer consisting of two nonlinear crystals with a dispersive medium separating them. The dispersive medium allows us to select a narrow band of the frequency spectrum to be exponentially amplified by high-gain parametric amplification. The frequency spectrum is thereby narrowed from (56.5±0.1) to (1.22±0.02)  THz and, in doing so, the number of frequency modes is reduced from approximately 50 to 1.82±0.02. Moreover, this method provides control and flexibility over the spectrum of the generated light through the timing of the pump.
Department of Physics and Max Planck Centre for Extreme and Quantum Photonics, University of Ottawa, 25 Templeton Street, Ottawa, Ontario K1N 6N5, Canada.
Samuel
S
Lemieux
Max Planck Institute for the Science of Light, G.-Scharowsky Strasse 1/Bau 24, 91058 Erlangen, Germany.
Mathieu
M
Manceau
Department of Physics, University of Paderborn, Warburger Strasse 100, D-33098 Paderborn, Germany.|Physics Department, Lomonosov Moscow State University, Moscow 119991, Russia.
Polina R
PR
Sharapova
Physics Department, Lomonosov Moscow State University, Moscow 119991, Russia.|Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119234, Russia.
Olga V
OV
Tikhonova
Department of Physics and Max Planck Centre for Extreme and Quantum Photonics, University of Ottawa, 25 Templeton Street, Ottawa, Ontario K1N 6N5, Canada.|Institute of Optics, University of Rochester, Rochester, New York 14627, USA.
Robert W
RW
Boyd
Max Planck Institute for the Science of Light, G.-Scharowsky Strasse 1/Bau 24, 91058 Erlangen, Germany.|University of Erlangen-Nuremberg, Staudtstrasse 7/B2, 91058 Erlangen, Germany.
Gerd
G
Leuchs
Max Planck Institute for the Science of Light, G.-Scharowsky Strasse 1/Bau 24, 91058 Erlangen, Germany.|Physics Department, Lomonosov Moscow State University, Moscow 119991, Russia.|University of Erlangen-Nuremberg, Staudtstrasse 7/B2, 91058 Erlangen, Germany.
Maria V
MV
Chekhova