Towards diamond light matter quantum interface: development of a multi-qubit quantum register based on paramagnetic color centers in diamond

• Applicant: Professor Dr. Fedor Jelezko
• Subject Area: Experimental Condensed Matter Physics ; Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas
• Term: from 2020 to 2024
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 445243414

• Final Report Year: 2025

Final Report Abstract

The realisation of a quantum interface between photons and spins is essential for quantum computing and communications. Colour centres in diamond are one of the most promising platforms for realising such an interface. However, most results have been reported using nitrogen-vacancy (NV) centres in diamond. These colour centres have drawbacks in terms of their efficiency as elements of quantum memory. More recently, group IV colour centres have emerged as a novel and highly promising platform for solid-state quantum optics. These colour centres combine strong optical transitions and high spectral stability. The main goal of the project was to explore group IV colour centres as elements of quantum memory for flying qubits and to realise hybrid quantum registers based on electron and nuclear spins.

Publications

• Long optical coherence times of shallow-implanted, negatively charged silicon vacancy centers in diamond. Applied Physics Letters, 116(6).
  Lang, Johannes; Häußler, Stefan; Fuhrmann, Jens; Waltrich, Richard; Laddha, Sunny; Scharpf, Jochen; Kubanek, Alexander; Naydenov, Boris & Jelezko, Fedor
  
• Hyperfine Interactions in the NV-13C Quantum Registers in Diamond Grown from the Azaadamantane Seed. Nanomaterials, 11(5), 1303.
  Nizovtsev, Alexander P.; Pushkarchuk, Aliaksandr L.; Kilin, Sergei Ya.; Kargin, Nikolai I.; Gusev, Alexander S.; Smirnova, Marina O. & Jelezko, Fedor
  
• Online adaptive quantum characterization of a nuclear spin. npj Quantum Information, 7(1).
  Joas, Timo; Schmitt, Simon; Santagati, Raffaele; Gentile, Antonio Andrea; Bonato, Cristian; Laing, Anthony; McGuinness, Liam P. & Jelezko, Fedor
  
• One decade of quantum optimal control in the chopped random basis. Reports on Progress in Physics, 85(7), 076001.
  Müller, Matthias M.; Said, Ressa S.; Jelezko, Fedor; Calarco, Tommaso & Montangero, Simone
  
• QuOCS: The quantum optimal control suite. Computer Physics Communications, 291, 108782.
  Rossignolo, Marco; Reisser, Thomas; Marshall, Alastair; Rembold, Phila; Pagano, Alice; Vetter, Philipp J.; Said, Ressa S.; Müller, Matthias M.; Motzoi, Felix; Calarco, Tommaso; Jelezko, Fedor & Montangero, Simone
  
• Germanium Vacancy in Diamond Quantum Memory Exceeding 20 ms. Physical Review Letters, 132(2).
  Senkalla, Katharina; Genov, Genko; Metsch, Mathias H.; Siyushev, Petr & Jelezko, Fedor
  
• Protecting Quantum Information via Destructive Interference of Correlated Noise. Physical Review Letters, 132(22).
  Salhov, Alon; Cao, Qingyun; Cai, Jianming; Retzker, Alex; Jelezko, Fedor & Genov, Genko
  
• Transform-Limited Photon Emission from a Lead-Vacancy Center in Diamond above 10 K. Physical Review Letters, 132(7).
  Wang, Peng; Kazak, Lev; Senkalla, Katharina; Siyushev, Petr; Abe, Ryotaro; Taniguchi, Takashi; Onoda, Shinobu; Kato, Hiromitsu; Makino, Toshiharu; Hatano, Mutsuko; Jelezko, Fedor & Iwasaki, Takayuki
  
• Uniform microwave field formation for control of ensembles of negatively charged nitrogen vacancy in diamond. Review of Scientific Instruments, 95(10).
  Rezinkin, Oleg; Rezinkina, Marina; Kitamura, Takuya; Paul, Rajan & Jelezko, Fedor
  
• Unveiling the high quantum efficiency of single silicon-vacancy centers through dielectric tuning of their local environment. AVS Quantum Science, 6(3).
  Bézard, M.; Mindarava, Y.; Blinder, R.; Trebbia, J.-B.; Tamarat, P.; Jelezko, F. & Lounis, B.
  
• Coherent Control of a Long-Lived Nuclear Memory Spin in a Germanium-Vacancy Multi-Qubit Node. Physical Review Letters, 134(4).
  Grimm, Nick; Senkalla, Katharina; Vetter, Philipp J.; Frey, Jurek; Gundlapalli, Prithvi; Calarco, Tommaso; Genov, Genko; Müller, Matthias M. & Jelezko, Fedor
  
• Photoactivation of NV Centers in Diamond via Continuous Wave Laser Illumination of Shallow As‐Implanted Nitrogen. Advanced Functional Materials, 36(20).
  Fuhrmann, Jens; Findler, Christoph; Olney‐Fraser, Michael; Kazak, Lev & Jelezko, Fedor
  
• Recent progress in hybrid diamond photonics for quantum information processing and sensing. Communications Engineering, 4(1).
  Katsumi, Ryota; Takada, Kosuke; Jelezko, Fedor & Yatsui, Takashi