Towards single-cycle squeezing in chirped quasi-phase-matched optical parametric down-conversion

Abstract

We propose a method for generation of a single-cycle squeezed light by parametric down-conversion in a chirped quasi-phase-matched nonlinear crystal. We find an exact quantum solution for this process valid for an arbitrary parametric gain, and discover an ultrabroadband squeezing in the down-converted light with flat squeezing spectrum comprising the full optical octave. We describe a scheme for observation of this kind of squeezing using second-harmonic generation as an ultrafast correlator.

5 pages, 4 figures

References in corpus (4)

• Nonlinear interactions with an ultrahigh flux of broadband entangled photons
• Generation and characterization of multimode quantum frequency combs
• Noncollinear parametric fluorescence by chirped quasi-phase matching for monocycle temporal entanglement
• Continuous-wave non-classical light with GHz squeezing bandwidth

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• Generation of monocycle squeezed light in chirped quasi-phase-matched nonlinear crystals
• Bloch-Messiah decomposition and Magnus expansion for parametric down-conversion with monochromatic pump
• Fourier-transform infrared spectroscopy with undetected photons from high-gain spontaneous parametric down-conversion
• Nonlinear Domain Engineering for Quantum Technologies
• Octave-Spanning Phase Control for Single-Cycle Bi-Photons