Quantifying the enhancement of two-photon absorption due to spectral-temporal entanglement

• URL: http://arxiv.org/abs/2103.10530v1
• Date: Thu, 18 Mar 2021 21:17:22 GMT
• Title: Quantifying the enhancement of two-photon absorption due to spectral-temporal entanglement
• Authors: Tiemo Landes, Michael G. Raymer, Markus Allgaier, Sofiane Merkouche, Brian J. Smith, and Andrew H. Marcus
• Abstract summary: When a low flux of time-frequency-entangled photon pairs illuminates a two-photon transition, the rate of two-photon absorption (TPA) can be enhanced considerably. We present a quantum-theoretic of entangled TPA (ETPA) and calculate an upper bound on the amount of quantum enhancement that is possible in such systems.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: When a low flux of time-frequency-entangled photon pairs (EPP) illuminates a two-photon transition, the rate of two-photon absorption (TPA) can be enhanced considerably by the quantum nature of photon number correlations and frequency correlations. We present a quantum-theoretic derivation of entangled TPA (ETPA) and calculate an upper bound on the amount of quantum enhancement that is possible in such systems. The derived bounds indicate that in order to observe ETPA the experiments would need to operate at a combination of significantly higher rates of EPP illumination, molecular concentrations, and conventional TPA cross sections than are achieved in typical experiments.

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