Experimental requirements for entangled two-photon spectroscopy
Stefan Lerch, Andr\'e Stefanov
TL;DR
This paper presents an experimental setup for high-resolution spectral shaping of entangled photon pairs and compares the efficiency of sum frequency generation using entangled versus classical light.
Contribution
It introduces a novel experimental setup for spectral shaping of entangled photons and evaluates its performance in sum frequency generation.
Findings
Spectral shaping of entangled photons achieved with high resolution.
Sum frequency generation efficiency is higher with entangled photons.
Experimental setup outperforms classical protocols in specific conditions.
Abstract
Entangled two-photon spectroscopy is expected to provide advantages compared with classical protocols. It is achieved by coherently controlling the spectral properties of energy-entangled photons. We present here an experimental setup that allows the spectral shaping of entangled photons with high resolution. We evaluate its performances by detecting sum frequency generation in a non-linear crystal. The efficiency of the process is compared when performed with classical or entangled light.
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