Correlations of spin splitting and orbital fluctuations due to 1/f charge noise in the Si/SiGe Quantum Dot

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{
  "metadata": {
    "edited_by": 98, 
    "owner": 1441, 
    "_oai": {
      "id": "oai:materialscloud.org:2288"
    }, 
    "description": "Fluctuations of electric fields can change the position of a gate-defined quantum dot in a semiconductor heterostructure. In the presence of magnetic field gradient, these stochastic shifts of electron's wavefunction lead to fluctuations of electron's spin splitting. The resulting spin dephasing due to charge noise limits the coherence times of spin qubits in isotopically purified Si/SiGe quantum dots. We investigate the spin splitting noise caused by such process caused by microscopic motion of charges at the semiconductor-oxide interface. We compare effects of isotropic and planar displacement of the charges, and estimate their densities and typical displacement magnitudes that can reproduce experimentally observed spin splitting noise spectra. We predict that for defect density of 10\u00b9\u2070 cm\u207b\u00b2, visible correlations between noises in spin splitting and in energy of electron's ground state in the quantum dot, are expected.", 
    "mcid": "2024.120", 
    "id": "2288", 
    "license": "Creative Commons Attribution 4.0 International", 
    "license_addendum": null, 
    "references": [
      {
        "citation": "M. K\u0119pa, \u0141. Cywi\u0144ski, J.A. Krzywda, arXiv:2305.06011 (2023)", 
        "type": "Preprint", 
        "url": "https://arxiv.org/abs/2305.06011", 
        "comment": "Preprint in which data is discussed", 
        "doi": "10.48550/arXiv.2305.06011"
      }, 
      {
        "citation": "M. K\u0119pa, \u0141. Cywi\u0144ski, J.A. Krzywda, Appl. Phys. Lett. 123, 034003 (2023)", 
        "type": "Journal reference", 
        "url": "https://pubs.aip.org/aip/apl/article-abstract/123/3/034003/2903023/Correlations-of-spin-splitting-and-orbital?redirectedFrom=fulltext", 
        "comment": "Paper in which method is discussed", 
        "doi": "10.1063/5.0156358"
      }
    ], 
    "doi": "10.24435/materialscloud:91-mj", 
    "keywords": [
      "Quantum dots", 
      "Charge noise", 
      "Simulations"
    ], 
    "contributors": [
      {
        "affiliations": [
          "Institute of Physics, Polish Academy of Sciences, al. Lotnik\u00f3w 32/46, PL 02-668 Warsaw, Poland"
        ], 
        "familyname": "K\u0119pa", 
        "email": "marcin.kepa@nbi.ku.dk", 
        "givennames": "Marcin"
      }, 
      {
        "affiliations": [
          "Institute of Physics, Polish Academy of Sciences, al. Lotnik\u00f3w 32/46, PL 02-668 Warsaw, Poland"
        ], 
        "familyname": "Cywi\u0144ski", 
        "email": "lcyw@ifpan.edu.pl", 
        "givennames": "\u0141ukasz"
      }, 
      {
        "affiliations": [
          "Institute of Physics, Polish Academy of Sciences, al. Lotnik\u00f3w 32/46, PL 02-668 Warsaw, Poland", 
          "Lorentz Institute and Leiden Institute of Advanced Computer Science, Leiden University, P.O. Box 9506, 2300 RA Leiden, The Netherlands"
        ], 
        "familyname": "Krzywda", 
        "email": "j.a.krzywda@liacs.leidenuniv.nl", 
        "givennames": "Jan A."
      }
    ], 
    "conceptrecid": "2287", 
    "version": 1, 
    "publication_date": "Aug 07, 2024, 19:57:36", 
    "is_last": true, 
    "status": "published", 
    "_files": [
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        "description": "Code and data for regenerating figures from the manuscripts", 
        "key": "data_correlations_1f.zip"
      }, 
      {
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        "key": "README.md"
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    ], 
    "title": "Correlations of spin splitting and orbital fluctuations due to 1/f charge noise in the Si/SiGe Quantum Dot"
  }, 
  "id": "2288", 
  "updated": "2024-08-07T17:57:36.987481+00:00", 
  "created": "2024-08-07T09:07:48.267987+00:00", 
  "revision": 6
}