P.309 Cognitive impairment in patients with endogenous depression in connection with the magnocellular and the parvocellular neural systems

Abstract

Ultrafast spectroscopy can be extended to quantum spectroscopy if quantum correlations of light, including entanglement become freely adjustable for light pulses having an arbitrary wave form and intensity. The consequences of this important step are overviewed by focusing on light-to-matter mapping to directly detect and control many-body states as a new, high-precision resource for quantum-information science. Both theoretical and experimental approaches are developed to realize all-experimental quantum spectroscopy with semiconductors. In this context, a quantum-light shaping methodology is introduced and experimentally demonstrated using pulse-to-pulse weighted postselection, without altering the ultrafast light pulses themselves. This conditional measurement technique meets the stringent criteria for realizing direct, user-defined quantum-optical excitations of many-body states.