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      "name": "CC0 1.0 Universal",
      "url": "https://creativecommons.org/publicdomain/zero/1.0",
      "description": "To the extent possible under law, all copyright and related or neighbouring rights have been waived worldwide to the data made available through this API."
    },
    "documentation": "https://doi.org/10.5281/zenodo.14918287",
    "release_date": "2025-08-20T00:00:00",
    "funder": "https://doi.org/10.13039/501100003246",
    "ror_id": "https://ror.org/04jsz6e67",
    "date": "2026-11-03T00:00:00",
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  "projects": [
    {
      "project_id": "VI.Veni.202.034",
      "title": "Spin qubit as a quantum sensor of Majorana zero modes",
      "funding_scheme_id": 4046,
      "funding_scheme": "NWO-Talentprogramma Veni ENW 2020",
      "department": "Exacte en Natuurwetenschappen",
      "sub_department": "Exacte en Natuurwetenschappen",
      "start_date": "2021-02-01T00:00:00",
      "end_date": "2022-12-31T00:00:00",
      "reporting_year": 2020,
      "summary_nl": "The combination of a strong high spin-orbit 1-dimensional semiconductor wire with a superconductor is predicted to give rise to Majorana bound states at the ends of the wire. Majorana bound states are expected to exhibit nonabelian exchange statistics and be suitable for fault-tolerant quantum computation. However, the Majorana bound states were only studied in very simple devices, that were not suitable for coherent manipulation and readout\n\nof quantum states. Consequently, aspects of central importance, such as the state lifetime, coherence and projective measurement remain unaddressed.\n\n\n\nI propose to use an ancillary system that can be coherently manipulated – an electronic spin in a quantum dot – to probe the quantum nature of the Majorana bound states. Thanks to coupling, the spin evolution will reflect the properties of the bound states. Furthermore, the coupling enables mapping\n\nthe quantum state of the Majorana bound state on the spin qubit state, allowing for a projective measurement.\n\n\n\nThe goal of the proposed project is to couple a coherently controlled spin to a bound state localized at the end of a proximitized nanowire. This goal will be achieved in several steps. First, I will embed the bottom-gated nanowire device in a radio-frequency resonant circuit in order to measure differential conductance and charge on a microsecond timescale. Second, I will realize a spin-qubit in a double quantum dot and verify its performance in\n\na magnetic field regime necessary to bring the nanowire into a topological phase. Third, I will investigate the coupling between a quantum dot and a proximitized nanowire using tunnelling spectroscopy combined with radio-frequency differential conductance measurement. Finally, I will couple a coherently controlled spin to a bound state to reveal if it can be manipulated coherently and measured projectively.",
      "summary_en": "The combination of a strong high spin-orbit 1-dimensional semiconductor wire with a superconductor is predicted to give rise to Majorana bound states at the ends of the wire. Majorana bound states are expected to exhibit nonabelian exchange statistics and be suitable for fault-tolerant quantum computation. However, the Majorana bound states were only studied in very simple devices, that were not suitable for coherent manipulation and readout\n\nof quantum states. Consequently, aspects of central importance, such as the state lifetime, coherence and projective measurement remain unaddressed.\n\n\n\nI propose to use an ancillary system that can be coherently manipulated – an electronic spin in a quantum dot – to probe the quantum nature of the Majorana bound states. Thanks to coupling, the spin evolution will reflect the properties of the bound states. Furthermore, the coupling enables mapping\n\nthe quantum state of the Majorana bound state on the spin qubit state, allowing for a projective measurement.\n\n\n\nThe goal of the proposed project is to couple a coherently controlled spin to a bound state localized at the end of a proximitized nanowire. This goal will be achieved in several steps. First, I will embed the bottom-gated nanowire device in a radio-frequency resonant circuit in order to measure differential conductance and charge on a microsecond timescale. Second, I will realize a spin-qubit in a double quantum dot and verify its performance in\n\na magnetic field regime necessary to bring the nanowire into a topological phase. Third, I will investigate the coupling between a quantum dot and a proximitized nanowire using tunnelling spectroscopy combined with radio-frequency differential conductance measurement. Finally, I will couple a coherently controlled spin to a bound state to reveal if it can be manipulated coherently and measured projectively.",
      "award_amount": 250000,
      "grant_id": "https://doi.org/10.61686/BDUBP27709",
      "summary_updates": [
        {
          "submission_date": "2023-03-30T09:13:59",
          "update_en": "At first, the project initially followed the expected timeline implementing a fast method of measuring nanowires in which signatures of Majorana particles were observed in the past. Unfortunately, as that part of the project was near finishing, it came to the public knowledge that the previously reported signatures were misrepresented, putting the project in a peculiar position. To make the best out of this situation, we focused on how the developed techniques could be adapted in other areas, and ultimately published several articles on that topic.",
          "update_nl": "In eerste instantie volgde het project aanvankelijk de verwachte tijdlijn door een snelle methode te implementeren voor het meten van nanodraden, waarin in het verleden handtekeningen van Majorana-deeltjes werden waargenomen. Helaas, toen dat deel van het project bijna afgerond was, werd het algemeen bekend dat de eerder gerapporteerde handtekeningen verkeerd waren weergegeven, waardoor het project in een bijzondere positie terechtkwam. Om het beste uit deze situatie te halen, hebben we ons gericht op hoe de ontwikkelde technieken konden worden aangepast in andere gebieden en uiteindelijk hebben we verschillende artikelen over dat onderwerp gepubliceerd."
        }
      ],
      "project_members": [
        {
          "role": "Researcher",
          "member_id": 420194,
          "last_name": "Malinowski",
          "degree_pre_nominal": "dr.",
          "initials": "F.K.",
          "first_name": "Filip",
          "organisation": "Technische Universiteit Delft",
          "organisation_id": 4621,
          "ror": "https://ror.org/02e2c7k09",
          "active": false
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        {
          "role": "Main Applicant",
          "member_id": 420194,
          "last_name": "Malinowski",
          "degree_pre_nominal": "dr.",
          "initials": "F.K.",
          "first_name": "Filip",
          "organisation": "Technische Universiteit Delft",
          "organisation_id": 4621,
          "ror": "https://ror.org/02e2c7k09",
          "active": true
        },
        {
          "role": "Project leader",
          "member_id": 420194,
          "last_name": "Malinowski",
          "degree_pre_nominal": "dr.",
          "initials": "F.K.",
          "first_name": "Filip",
          "organisation": "Technische Universiteit Delft",
          "organisation_id": 4621,
          "ror": "https://ror.org/02e2c7k09",
          "active": true
        }
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          "year": 2023,
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          "start": 445,
          "end": 450,
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