Single Photons

Single Photons

The realization of single-photon sources with diverse materials and the applications quantum radiometry, quantum metrology and quantum communication.

Contributions to QuantumFrontiers

  • Collaboration for creating the best single-photon sources and required structures
  • Realisation of ultra-precise radiometric and photometric standards by single photon sources and detectors
  • Enablement of the control of electromagnetic fields at the single quantum level
  • Establishment of the Niedersachsen Quantum Link between LUH and PTB as a quantum communication testbed
  • Organization of a regular PhD seminar on Single Photons

Collaborative Innovation

  • Growing single-photon sources based on GaInN/GaN quantum dot pyramidal structures, micro-luminescence investigation and confocal microscopy on these samples (Kück PTB / Hangleiter TUBS)
  • Growing single-photon sources based on molecules, specifically the preparation of C60-molecules as protective layers for dibenzoterrylene (DBT) molecules and for embedding DBT into C60 molecules (Kück PTB / Schlickum TUBS) 
  • Diamond structuring using Focused Ion Beam (FIB) methods (Kück, PTB / Etzkorn TUBS)
  • Establishing a quantum key distribution channel between LUH and PTB based on different protocols (Ding LUH / Kück PTB)
  • Investigating the properties of defects in hexagonal boron nitride. (Schell LUH / Kück PTB)
  • Advancing light extraction from quantum dots using hybrid antennas (Ding LUH / Kück PTB)
  • Developing and characterizing bright sources of single photons based on GaIn/GaN pyramid structures and GaAs/AlGaAs quantum dots (Kück PTB / Hangleiter TUBS)
  • Investigating the coupling of plasmonic nanostructures with GaAs/AlGaAs quantum dots grown close to the semiconductor surface (Chichkov, Schell LUH)
  • Growing and characterizing molecular photon sources (Voss, Schlickum TUBS)

Scientific Output

  • Publications
    Christinck J, Hirt F, Hofer H, Liu Z, Etzkorn M, Dunatov T et al. Bright single-photon emission from a GeV center in diamond under a microfabricated solid immersion lens at room temperature. Journal of applied physics. 2023 May 21;133(19):193102. Epub 2023 May 16. doi: 10.1063/5.0150208
    Christinck J, Rodiek B, López M, Georgieva H, Hofer H, Götzinger S et al. Comparison of back focal plane imaging of nitrogen vacancy centers in nanodiamond and core-shell CdSe/CdS quantum dots. Journal of Physics: Conference Series. 2022;2149(1):012014. doi: 10.1088/1742-6596/2149/1/012014
    Kück S, López M, Hofer H, Georgieva H, Christinck J, Rodiek B et al. Single photon sources for quantum radiometry: a brief review about the current state-of-the-art. Applied Physics B: Lasers and Optics. 2022 Jan 23;128(2):28. doi: 10.1007/s00340-021-07734-2
    Bruschi DE, Paraoanu GS, Fuentes I, Wilhelm FK, Schell AW. General solution of the time evolution of two interacting harmonic oscillators. Physical Review A. 2021 Feb 11;103(2):023707. doi: 10.1103/PhysRevA.103.023707
    Bruschi DE, Chatzinotas S, Wilhelm FK, Schell AW. Spacetime effects on wavepackets of coherent light. Physical Review D. 2021 Oct 11;104(8):085015. doi: 10.1103/PhysRevD.104.085015
    Cao X, Yang J, Li P, Zhang Y, Rugeramigabo EP, Brechtken B et al. Single photon emission from ODT passivated near-surface GaAs quantum dots. Applied physics letters. 2021 Jun 2;118(22):221107. doi: 10.1063/5.0046042
    Georgieva H, López M, Hofer H, Kanold N, Kaganskiy A, Rodt S et al. Absolute calibration of a single-photon avalanche detector using a bright triggered single-photon source based on an InGaAs quantum dot. Optics express. 2021 Jul 19;29(15):430680. doi: 10.1364/OE.430680
    Georgieva H, Meda A, Raupach SMF, Hofer H, Gramegna M, Degiovanni IP et al. Detection of ultra-weak laser pulses by free-running single-photon detectors: Modeling dead time and dark counts effects. Applied physics letters. 2021 Apr 26;118(17):174002. doi: 10.1063/5.0046014
    Henning P, Sidikejiang S, Horenburg P, Bremers H, Rossow U, Hangleiter A. Unity quantum efficiency in III-nitride quantum wells at low temperature: Experimental verification by time-resolved photoluminescence. Applied physics letters. 2021 Jul 8;119(1):011106. doi: 10.1063/5.0055368
    Krumbein L, Anggara K, Stella M, Michnowicz T, Ochner H, Abb S et al. Fast Molecular Compression by a Hyperthermal Collision Gives Bond-Selective Mechanochemistry. Physical review letters. 2021 Feb 1;126(5):056001. doi: 10.1103/PhysRevLett.126.056001
    Rossow U, Sidikejiang S, Hagag S, Horenburg P, Henning P, de Vasconcellos Lourenco R et al. Pyramid Formation by Etching of InxGa1−xN /GaN Quantum Well Structures Grown on N-face GaN for Nanooptical Light Emitters. Physica Status Solidi (B) Basic Research. 2021 Oct 8;258(10):2100085. Epub 2021 Jul 20. doi: 10.1002/pssb.202100085
    Tieben P, Shiyani B, Bahrami N, Schell AW. Spectroscopic Analysis of Defect Centers in hBN. In Proceedings of SPIE: Photonics for Quantum 2021: 12–16 July 2021 Online Only, United States. SPIE. 2021. 1184418. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2600952
    Christinck J, Rodiek B, López M, Hofer H, Georgieva H, Kück S. Characterization of the angular-dependent emission of nitrogen-vacancy centers in nanodiamond. Applied Physics B: Lasers and Optics. 2020 Oct 1;126(10):161. doi: 10.1007/s00340-020-07508-2
    Georgieva H, López M, Hofer H, Christinck J, Rodiek B, Schnauber P et al. Radiometric characterization of a triggered narrow-bandwidth single-photon source and its use for the calibration of silicon single-photon avalanche detectors. METROLOGIA. 2020 Oct;57(5):055001. doi: 10.1088/1681-7575/ab9db6
    Michnowicz T, Borca B, Pétuya R, Schendel V, Pristl M, Pentegov I et al. Controlling Single Molecule Conductance by a Locally Induced Chemical Reaction on Individual Thiophene Units. Angewandte Chemie - International Edition. 2020 Apr 1;59(15):6207-6212. Epub 2020 Jan 22. doi: 10.1002/anie.201915200
    Wu X, Delbianco M, Anggara K, Michnowicz T, Pardo-Vargas A, Bharate P et al. Imaging single glycans. NATURE. 2020 Jun 18;582(7812):375-378. Epub 2020 Jun 17. doi: 10.1038/s41586-020-2362-1
    Yang J, Nawrath C, Keil R, Joos R, Zhang X, Höfer B et al. Quantum dot-based broadband optical antenna for efficient extraction of single photons in the telecom O-band. Optics express. 2020 Jun 22;28(13):19457-19468. Epub 2020 Jun 17. doi: 10.1364/OE.395367
    Zopf M, Keil R, Chen Y, Yang J, Chen D, Ding F et al. Entanglement Swapping with Semiconductor-Generated Photons Violates Bell's Inequality. Physical review letters. 2019 Oct 18;123(16):160502. Epub 2019 Oct 14. doi: 10.1103/PhysRevLett.123.160502, 10.15488/5545

TG Members

  • Involved Members and their Relevant Expertise
    Members Institution Relevant Expertise
    Stefan Kück PTB Single-photon sources and their metrological characterization and application
    Boris Chichkov LUH Nanoscale materials processing
    Uta Schlickum TUBS Light Excitation at the Single Molecular Level; Photon-STM investigations of III-V Semiconductors: growth and characterization of single photon sources
    Fei Ding LUH Intensity-squeezed single photon sources based on quantum dots; Niedersachsen Quantum Link
    Markus Etzkorn TUBS Advancing TEM characterization
    Ilja Gerhardt LUH Development and implementation of optical systems for quantum technologies, quantum communication
    Andreas Hangleiter TUBS Deterministic Quantum Dots
    Michael Oestreich LUH Spin and charge carrier dynamics of complex semiconductor nanostructures
    Andreas Schell PTB/LUH Spectroscopy and photonic integration of quantum emitters
    Tobias Voss TUBS Molecular Quantum Emitters on GaN-based devices
    Heiko Bremers TUBS Deterministic Quantum Dots
    Marco López PTB single-photon metrology
    Uwe Rossow TUBS Deterministic Quantum Dots
    Ali Hreibi PTB Niedersachsen Quantum Link
    Hristina Georgieva PTB Semiconductor quantum dot based single-photon sources
    Beatrice Rodiek PTB Quantum radiometry
    Michael Zopf LUH Semiconductor quantum dot based single-photon sources, Niedersachsen Quantum Link
    Justus Christinck PTB Diamond-based single-photon sources
    Franziska Hirt PTB Molecule- and semiconductor-based single-photon sources
    Martin Kernbach LUH/PTB Optical trapping of nanoparticles
    Chenxi Ma LUH Fabrication of quantum dot based single-photon sources
    Leonora Meier PTB Characterization of single photon sources
    Neda Noei TUBS Molecule-based single-photon sources
    Andreas Reutter TUBS Characterization of single photon sources
    Simon Spelthann LUH Semiconductor quantum dot based single-photon sources
    Mike Stummvoll TUBS Characterization of single photon sources
    Pablo Tieben LUH/PTB Spectroscopy of quantum emitters