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We develop photoelectron interferometry based on laser-assisted extremeultraviolet ionization for flexible and robust control of photoelectroncircular dichroism in randomly oriented chiral molecules. A comb of XUV photonsionizes a sample of chiral molecules in the presence of a time-delayed infraredor visible laser pulse promoting interferences between components of theXUV-ionized photoelectron wave packet. In striking contrast to multicolor phasecontrol schemes relying on pulse shaping techniques, the magnitude of theresulting chiral signal is here controlled by the time delay between the XUVand laser pulses. Furthermore, we show that the relative polarizationconfigurations of the XUV and IR fields allows for disentangling thecontributions of bound and continuum states to the chiral response. Ourproposal provides a simple, robust and versatile tool for the control ofphotoelectron circular dichroism and experimentally feasible protocol forprobing the individual contributions of bound and continuum states to the PECDin a time-resolved manner.

Continuum-electron interferometry for enhancement of photoelectron  circular dichroism and measurement of bound, free, and mixed contributions to  chiral response