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Articles by Lijiong Shen
[2604.03646] Superradiant phase transition in cavity magnonics via Floquet engineering
[Submitted on 4 Apr 2026 ( v1 ), last revised 23 Sep 2026 (this version, v2)] Title:Superradiant phase transition in cavity magnonics via Floquet engineering View a PDF of the paper titled Superradiant phase transition in cavity magnonics via Floquet engineering, by Si-Yan Lin and 6 other authors View PDF HTML (experimental) Abstract:We propose a scheme to engineer the superradiant phase transition (SPT) in cavity magnonics by periodically modulating the frequency of the magnon mode.
Direct measurement of the coherent light proportion from a practical laser source
We present a technique to estimate the proportion of coherent emission in the light emitted by a practical laser source without spectral filtering. The technique is based on measuring interferometric photon correlations between the output ports of an asymmetric Mach-Zehnder interferometer. With this, we characterize the fraction of coherent emission in the light emitted by a laser diode when transiting through the lasing threshold.
Practical Range Sensing with Thermal Light
Abstract Many quantum sensing suggestions rely on temporal correlations found in photon pairs generated by parametric down-conversion. In this work, we show that the temporal correlations in light with a thermal photon statistics can be equally useful for such applications. Using a subthreshold laser diode as an ultrabright source of thermal light, we demonstrate optical range finding to a distance of up to 1.8 km.
Distributing Polarization-Entangled Photon Pairs with High Rate Over Long Distances through Standard Telecommunication Fiber
Abstract Distributing entanglement through standard telecommunication fiber is particularly important for quantum key distribution protocols with low vulnerability over metropolitan distances. However, entanglement distribution over long distance through optical fiber so far could only be accomplished with moderate photon pair rates.
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