Quantum FROG measures complex temporal modes, quadrature covariances, and up to 7 dB multimode squeezing in femtosecond squeezed vacuum states with over 100 THz bandwidth on a nanophotonic chip.
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A FROG technique employing parametric amplification is proposed and validated via numerical simulations to recover temporal mode shapes and squeezing levels of multimode ultrafast squeezed states.
Optimizing temporal weights from shot and electronic noise autocorrelations via a generalized Rayleigh quotient increases SNR and observed squeezing in ultrafast homodyne detection.
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Quantum Frequency Resolved Optical Gating of Few-Cycle Squeezed Vacuum
Quantum FROG measures complex temporal modes, quadrature covariances, and up to 7 dB multimode squeezing in femtosecond squeezed vacuum states with over 100 THz bandwidth on a nanophotonic chip.