1. Two-photon emission from a superlattice-based superconducting light-emitting structure
- Author
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Shlomi Bouscher, Dmitry Panna, Ronen Jacovi, Fauzia Jabeen, Christian Schneider, Sven Höfling, and Alex Hayat
- Subjects
Applied optics. Photonics ,TA1501-1820 ,Optics. Light ,QC350-467 - Abstract
Abstract Superconductor-semiconductor hybrid devices can bridge the gap between solid-state-based and photonics-based quantum systems, enabling new hybrid computing schemes, offering increased scalability and robustness. One example for a hybrid device is the superconducting light-emitting diode (SLED). SLEDs have been theoretically shown to emit polarization-entangled photon pairs by utilizing radiative recombination of Cooper pairs. However, the two-photon nature of the emission has not been shown experimentally before. We demonstrate two-photon emission in a GaAs/AlGaAs SLED. Measured electroluminescence spectra reveal unique two-photon superconducting features below the critical temperature (T c), while temperature-dependent photon-pair correlation experiments (g (2)(τ,T)) demonstrate temperature-dependent time coincidences below T c between photons emitted from the SLED. Our results pave the way for compact and efficient superconducting quantum light sources and open new directions in light-matter interaction studies.
- Published
- 2024
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