Kersten, W. N., De Zordo, N., Diekmann, O., Reiter, T., Zens, M., Kanagin, A. N., Rotter, S., Schmiedmayer, H.-J., & Angerer, A. (2023). Triggered Superradiance and Spin Inversion Storage in a Hybrid Quantum System. Physical Review Letters, 131(4), 043601-1-043601–043606. https://doi.org/10.1103/PhysRevLett.131.043601
We study the superradiant emission of an inverted spin ensemble strongly coupled to a superconducting cavity. After fast inversion, we detune the spins from the cavity and store the inversion for tens of milliseconds, during which the remaining transverse spin components disappear. Switching back on resonance enables us to study the onset of superradiance. A weak trigger pulse of a few hundred photons shifts the superradiant burst to earlier times and imprints its phase onto the emitted radiation. For long hold times, the inversion decreases below the threshold for spontaneous superradiance. There, the energy stored in the ensemble can be used to amplify microwave pulses passing through the cavity.
en
Research facilities:
Vienna Scientific Cluster
-
Project title:
Quantendetektion von Mikrowellen mittels Diamant-Farbzentren: I 3765 (FWF Fonds zur Förderung der wissenschaftlichen Forschung (FWF)) Spins in Quantum Solids: P 34314 (FWF Fonds zur Förderung der wissenschaftlichen Forschung (FWF)) Wellenkontrolle in Systemen mit Absorption und Unordnung: P 32300-N27 (FWF Fonds zur Förderung der wissenschaftlichen Forschung (FWF)) FAult Tolerant MOLecular Spin processor: 862893 (European Commission)
-
Research Areas:
Photonics: 50% Design and Engineering of Quantum Systems: 50%
CC BY 4.0
