Simulation of 1/f charge noise affecting a quantum dot in a Si/SiGe structure

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{
  "metadata": {
    "edited_by": 98, 
    "owner": 1441, 
    "_oai": {
      "id": "oai:materialscloud.org:2286"
    }, 
    "description": "Due to presence of magnetic field gradient needed for coherent spin control, dephasing of single-electron spin qubits in silicon quantum dots is often dominated by 1/f charge noise. We investigate theoretically fluctuations of ground state energy of an electron in gated quantum dot in realistic Si/SiGe structure. We assume that the charge noise is caused by motion of charges trapped at the semiconductor-oxide interface. We consider a realistic range of trapped charge densities, \u03c1\u223c10\u00b9\u2070 cm\u207b\u00b2, and typical lenghtscales of isotropically distributed displacements of these charges, \u03b4r\u22641 nm, and identify pairs (\u03c1,\u03b4r) for which the amplitude and shape of the noise spectrum is in good agreement with spectra reconstructed in recent experiments on similar structures.", 
    "mcid": "2024.118", 
    "id": "2286", 
    "license": "Creative Commons Attribution 4.0 International", 
    "license_addendum": null, 
    "references": [
      {
        "citation": "M. K\u0119pa, N. Focke, \u0141. Cywi\u0144ski, J.A. Krzywda, arXiv:2303.13968 (2023)", 
        "type": "Preprint", 
        "url": "https://arxiv.org/abs/2303.13968", 
        "comment": "Preprint in which the data is discussed", 
        "doi": "https://doi.org/10.48550/arXiv.2303.13968"
      }, 
      {
        "citation": "M. K\u0119pa, N. Focke, \u0141. Cywi\u0144ski, J.A. Krzywda, Appl. Phys. Lett. 123, 034005 (2023)", 
        "type": "Journal reference", 
        "url": "https://pubs.aip.org/aip/apl/article-abstract/123/3/034005/2903215/Simulation-of-1-f-charge-noise-affecting-a-quantum?redirectedFrom=fulltext", 
        "comment": "Paper In which the method is described", 
        "doi": "https://doi.org/10.1063/5.0151029"
      }
    ], 
    "doi": "10.24435/materialscloud:mx-0w", 
    "keywords": [
      "Quantum dots", 
      "Simulation", 
      "Charge noise"
    ], 
    "contributors": [
      {
        "affiliations": [
          "Institute of Physics, Polish Academy of Sciences, al. Lotnik\u00f3w 32/46, PL 02-668 Warsaw,\nPoland"
        ], 
        "familyname": "K\u0119pa", 
        "email": "marcin.kepa@nbi.ku.dk", 
        "givennames": "Marcin"
      }, 
      {
        "affiliations": [
          "JARA-FIT Institute for Quantum Information, Forschungszentrum J\u00fclich GmbH and RWTH Aachen University, Aachen, Germany"
        ], 
        "familyname": "Focke", 
        "email": "niels.focke@rwth-aachen.de", 
        "givennames": "Niels"
      }, 
      {
        "affiliations": [
          "Institute of Physics, Polish Academy of Sciences, al. Lotnik\u00f3w 32/46, PL 02-668 Warsaw,\nPoland"
        ], 
        "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,\nPoland", 
          "Lorentz Institute and Leiden Institute of Advanced Computer Science, Leiden University, P.O. Box 9506,\n2300 RA Leiden, The Netherlands"
        ], 
        "familyname": "Krzywda", 
        "email": "j.a.krzywda@liacs.leidenuniv.nl", 
        "givennames": "Jan A."
      }
    ], 
    "conceptrecid": "2285", 
    "version": 1, 
    "publication_date": "Aug 07, 2024, 14:28:01", 
    "is_last": true, 
    "status": "published", 
    "_files": [
      {
        "size": 27567911, 
        "checksum": "md5:0bf56f3b6c4916b54b8e5e32e90dae66", 
        "description": "Code and data for regenerating figures and findings of the paper", 
        "key": "data_simulation1f.zip"
      }, 
      {
        "size": 1021, 
        "checksum": "md5:692d7a4898d9e98e7341865550216f2f", 
        "description": "Readme file", 
        "key": "README.md"
      }
    ], 
    "title": "Simulation of 1/f charge noise affecting a quantum dot in a Si/SiGe structure"
  }, 
  "id": "2286", 
  "updated": "2024-08-07T12:28:01.596851+00:00", 
  "created": "2024-08-07T04:33:09.755069+00:00", 
  "revision": 5
}