Bonn 2025 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 44: Quantum Technologies (Detectors and Photon Sources) (joint session Q/QI)
QI 44.5: Vortrag
Freitag, 14. März 2025, 15:30–15:45, AP-HS
Superconducting nanowire detection of neutral atoms & molecules via their internal and kinetic energy in the eV range, Adv. Phys. Res. DOI: 10.1002/apxr.202400133 — Marcel Strauß1, Ronan Gourges3, Martin F. X. Mauser1, •Linus Kulman1, Mario Castaneda3, Andreas Fognini3, Armin Shayeghi2, Philipp Geyer1, and Markus Arndt1 — 1University of Vienna, Faculty of Physics & VDSP & VCQ, Boltzmanngasse 5, A-1090 Vienna — 2University of Vienna, Faculty of Physics & VCQ, Boltzmanngasse 5, A-1090 Vienna and Institute for Quantum Optics and Quantum Information (IQOQI) Vienna, Austrian Academy of Sciences, Boltzmanngasse 3, A-1090 — 3Single Quantum, Rotterdamseweg 394, 2629 HH, Delft, The Netherlands
Superconducting nanowires have found many applications in photonics as single photon detectors. Here we explore their potential as quantum sensors for neutral matter at low energy. We find that they exhibit outstanding sensitivity both with regard to the detection of internal atomic excitations as well as to the impact of neutral molecules, here demonstrated for metastable atoms as well as supersonic beams of perfluorodecalin. For metastable atoms, the quantum yield of SNWDs compares well with that of secondary electron multipliers and they outperform secondary electron multipliers by orders of magnitude in the detection of neutral molecules at impact energies as low as 2 eV.
Keywords: Superconducting nanowires; Neutral detection; Supersonic beams; Internal energy detection