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arXiv · 2212.12521

Quantum-Referenced Spontaneous Emission Tomography

I. I. Faruque·B. M. Burridge·M. Banic·M. Borghi·J. E. Sipe·J. G. Rarity·J. Barreto
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Abstract

We present a method of tomography that measures the joint spectral phase (JSP) of spontaneously emitted photon pairs originating from a largely uncharacterized ``target" source. We use quantum interference between our target source and a reference source to extract the JSP with four spectrally resolved measurements, in a process that we call quantum-referenced spontaneous emission tomography (Q-SpET). We have demonstrated this method on a photonic integrated circuit for a target micro-ring resonator photon-pair source. Our results show that spontaneously emitted photon pairs from a micro-ring resonator are distinctively different from that of stimulated emission, and thus cannot in general be fully characterized using classical stimulated emission tomography without detailed knowledge of the source.

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I. I. Faruque, B. M. Burridge, M. Banic, M. Borghi, J. E. Sipe, J. G. Rarity, J. Barreto. 2022-12-23. Quantum-Referenced Spontaneous Emission Tomography. https://doi.org/10.1088/2058-9565%2Facf47b

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