Entangled biphoton virtual-state spectroscopy of the A 2Σ +-X 2Π system of OH
Abstract
This Letter describes the first application of entanglement-induced virtual-state spectroscopy to a molecular system. Non-classical, non-monotonic behavior in the two-photon absorption cross-section of the OH A-X system, induced by entangled photon pairs is theoretically demonstrated. A Fourier transform analysis of the biphoton cross-section permits access to the energy eigenvalues of intermediate rovibronic states with a fixed excitation energy. Our analysis reveals that the implementation of virtual-state spectroscopy of the OH A-X system requires tuning of the relative path delay τe over a picosecond range with femtosecond resolution for a certain entanglement time Te.
- Publication:
-
Chemical Physics Letters
- Pub Date:
- October 2004
- DOI:
- 10.1016/j.cplett.2004.08.051
- Bibcode:
- 2004CPL...396..323K
