Effects of time-energy correlation strength in molecular entangled photon spectroscopy
- In this paper, we explore the time-energy domain quantum-classical transition comparing a classical pump-probe experiment on a diatomic molecule to its quantum enhanced counterpart, where the pump and probe pulses are substituted by the signal and idler beams of a spontaneous parametric down conversion (SPDC) source. Absorption of biphotons generated with SPDC exploits quantum time-energy entanglement to enhance the overall yield and selectivity of the process, when compared with a classical pump-probe setup, while maintaining femtosecond time resolution. We systematically study the effects of correlation strength on process efficiency and selectivity, comparing the results to classical pump-probe spectra. An excitation scheme to improve the yield based on spectral narrowing of biphotons is shown. The results indicate that the quantum improvements in yield are caused by a more efficient use of the total power available for the process.
Author details: | Fabiano LeverORCiD, Sven RamelowORCiDGND, Markus GührORCiDGND |
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DOI: | https://doi.org/10.1103/PhysRevA.100.053844 |
ISSN: | 2469-9926 |
ISSN: | 2469-9934 |
Title of parent work (English): | Physical review : A, Atomic, molecular, and optical physics |
Publisher: | American Physical Society |
Place of publishing: | College Park |
Publication type: | Article |
Language: | English |
Year of first publication: | 2019 |
Publication year: | 2019 |
Release date: | 2020/10/04 |
Volume: | 100 |
Issue: | 5 |
Number of pages: | 6 |
Funding institution: | Lichtenberg Professorship of the Volkswagen Foundation |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Peer review: | Referiert |