Direct temporal mode measurement of photon pairs by stimulated emission
Xin Chen, Xiaoying Li, and Z. Y. Ou
TL;DR
This paper introduces a feedback-iteration method combined with stimulated emission tomography to precisely determine the independent temporal modes of photon pairs generated via spontaneous parametric processes, advancing quantum photonics characterization.
Contribution
The paper presents a novel feedback-iteration technique that accurately reveals the exact temporal modes of entangled photon pairs, improving upon previous spectral intensity measurements.
Findings
Exact temporal modes can be determined using the proposed method.
The method enhances understanding of multi-temporal mode entanglement.
It provides a practical approach for quantum state characterization.
Abstract
It is known that photon pairs generated from pulse-pumped spontaneous parametric processes can be described by independent temporal modes and form a multi-temporal mode entangled state. However, the exact form of the temporal modes is not known even though the joint spectral intensity of photon pairs can be measured by the method of stimulated emission tomography. In this paper, we describe a feedback-iteration method which, combined with the stimulated emission method, can give rise to the exact forms of the independent temporal modes for the temporally entangled photon pairs.
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