We have a new paper out in Physical Review A called Enhanced-resolution chirped-pulse interferometry by Maggie Bérubé, Mike Mazurek (NIST), and Kevin Resch.
Abstract: Chirped-pulse interferometry (CPI) is a classical low-coherence interferometry technique with automatic dispersion cancellation and improved resolution over white-light interference. Previous work showed that CPI with linearly chirped Gaussian laser pulses achieves a Sqrt(2) improvement in resolution over conventional white-light interferometry, but this is less than the factor of 2 improvement exhibited by a comparable quantum technique. In this work, we show how a particular class of nonlinearly chirped laser pulses can meet, and even exceed, the factor of 2 improvement in resolution. This enhanced-resolution CPI removes the resolution advantage of quantum interferometers in dispersion-cancelled interferometry.
*SuperErf refers to a specific class of nonlinearly chirped laser pulses based on antiderivatives of the error function.
