BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:W. V. Pogosov DTSTART:20240904T120000Z DTEND:20240904T123000Z DTSTAMP:20260423T040010Z UID:QOART/16 DESCRIPTION:Title: E ffects of photon statistics in wave mixing on a single qubit\nby W. V. Pogosov as part of Quantum Optics and Related Topics\n\n\nAbstract\nWe th eoretically consider wave mixing under the irradiation of a single qubit b y two photon fields. The first signal is a classical monochromatic drive\, while the second one is a nonclassical light. Particularly\, we address t wo examples of a nonclassical light: (i) a broadband squeezed light and (i i) a periodically excited quantum superposition of Fock states with 0 and 1 photons. The mixing of classical and nonclassical photon fields gives ri se to side peaks due to the elastic multiphoton scattering. We show that s ide peaks structure is distinct from the situation when two classical fiel ds are mixed. The most striking feature is that some peaks are absent. Thu s\, the analysis of peak amplitudes can be used to probe photon statistics in the nonclassical mode. A cascade of two-level superconducting artifici al atoms – a source and a probe – strongly coupled to a semi-infinite waveguide is a promising tool for observing such non-trivial phenomena. Th e probe atom can scatter an antibunched output from the source\, thereby g enerating the field with specific properties. We experimentally demonstrat e wave mixing between non-classical light from the coherently pumped sourc e and another coherent wave acting on the probe. We observe unique feature s in the wave-mixing stationary spectrum that cannot be reproduced by mixi ng two classical waves on the probe. These features are well described by the theory for a strongly coupled cascaded system of two atoms.\n LOCATION:https://researchseminars.org/talk/QOART/16/ END:VEVENT END:VCALENDAR