Senior Lecturer

Dr Joris Keizer

Science
Centre for Quantum Computation & Communication Technology
Phone
041/483-2180
  • Book Chapters | 2012
    Keizer JG; Koenraad PM, 2012, 'Atomic-scale analysis of self-assembled quantum dots by cross-sectionalscanning, tunneling microscopy, and atom probe tomography', in Quantum Dots: Optics, Electron Transport and Future Applications, pp. 41 - 60, http://dx.doi.org/10.1017/CBO9780511998331.004
  • Journal articles | 2023
    Kranz L; Gorman SK; Thorgrimsson B; Monir S; He Y; Keith D; Charde K; Keizer JG; Rahman R; Simmons MY, 2023, 'The Use of Exchange Coupled Atom Qubits as Atomic-Scale Magnetic Field Sensors', Advanced Materials, vol. 35, pp. e2201625, http://dx.doi.org/10.1002/adma.202201625
    Journal articles | 2023
    Kranz L; Gorman SK; Thorgrimsson B; Monir S; He Y; Keith D; Charde K; Keizer JG; Rahman R; Simmons MY, 2023, 'The Use of Exchange Coupled Atom Qubits as Atomic‐Scale Magnetic Field Sensors (Adv. Mater. 6/2023)', Advanced Materials, vol. 35, pp. 2370039 - 2370039, http://dx.doi.org/10.1002/adma.202370039
    Journal articles | 2023
    Kranz L; Roche S; Gorman SK; Keizer JG; Simmons MY, 2023, 'High-Fidelity CNOT Gate for Donor Electron Spin Qubits in Silicon', Physical Review Applied, vol. 19, http://dx.doi.org/10.1103/physrevapplied.19.024068
    Journal articles | 2022
    Keith D; Gorman SK; Kranz L; He Y; Keizer JG; Broome MA; Simmons MY, 2022, 'Erratum: Benchmarking high fidelity single-shot readout of semiconductor qubits (New J. Phys. (2019) 21 (063011) DOI: 10.1088/1367-2630/ab242c/meta)', New Journal of Physics, vol. 24, http://dx.doi.org/10.1088/1367-2630/ac7479
    Journal articles | 2022
    Kiczynski M; Gorman SK; Geng H; Donnelly MB; Chung Y; He Y; Keizer JG; Simmons MY, 2022, 'Engineering topological states in atom-based semiconductor quantum dots', Nature, vol. 606, pp. 694 - 699, http://dx.doi.org/10.1038/s41586-022-04706-0
    Journal articles | 2021
    Donnelly MB; Keizer JG; Chung Y; Simmons MY, 2021, 'Monolithic Three-Dimensional Tuning of an Atomically Defined Silicon Tunnel Junction', Nano Letters, vol. 21, pp. 10092 - 10098, http://dx.doi.org/10.1021/acs.nanolett.1c03879
    Journal articles | 2021
    Fricke L; Hile SJ; Kranz L; Chung Y; He Y; Pakkiam P; House MG; Keizer JG; Simmons MY, 2021, 'Coherent control of a donor-molecule electron spin qubit in silicon', Nature Communications, vol. 12, http://dx.doi.org/10.1038/s41467-021-23662-3
    Journal articles | 2020
    Kranz L; Gorman SK; Thorgrimsson B; He Y; Keith D; Keizer JG; Simmons MY, 2020, 'Exploiting a Single-Crystal Environment to Minimize the Charge Noise on Qubits in Silicon', Advanced Materials, vol. 32, http://dx.doi.org/10.1002/adma.202003361
    Journal articles | 2020
    Kranz L; Gorman SK; Thorgrimsson B; He Y; Keith D; Keizer JG; Simmons MY, 2020, 'Quantum Computing: Exploiting a Single‐Crystal Environment to Minimize the Charge Noise on Qubits in Silicon (Adv. Mater. 40/2020)', Advanced Materials, vol. 32, pp. 2070298 - 2070298, http://dx.doi.org/10.1002/adma.202070298
    Journal articles | 2019
    He Y; Gorman SK; Keith D; Kranz L; Keizer JG; Simmons MY, 2019, 'A two-qubit gate between phosphorus donor electrons in silicon', Nature, vol. 571, pp. 371 - 375, http://dx.doi.org/10.1038/s41586-019-1381-2
    Journal articles | 2019
    Keith D; Gorman SK; Kranz L; He Y; Keizer JG; Broome MA; Simmons MY, 2019, 'Benchmarking high fidelity single-shot readout of semiconductor qubits', New Journal of Physics, vol. 21, http://dx.doi.org/10.1088/1367-2630/ab242c
    Journal articles | 2019
    Koch M; Keizer JG; Pakkiam P; Keith D; House MG; Peretz E; Simmons MY, 2019, 'Spin read-out in atomic qubits in an all-epitaxial three-dimensional transistor', Nature Nanotechnology, vol. 14, pp. 137 - 140, http://dx.doi.org/10.1038/s41565-018-0338-1
    Journal articles | 2018
    Broome MA; Gorman SK; House MG; Hile SJ; Keizer JG; Keith D; Hill CD; Watson TF; Baker WJ; Hollenberg LCL; Simmons MY, 2018, 'Two-electron spin correlations in precision placed donors in silicon', Nature Communications, vol. 9, http://dx.doi.org/10.1038/s41467-018-02982-x
    Journal articles | 2018
    Gorman SK; Broome MA; House MG; Hile SJ; Keizer JG; Keith D; Watson TF; Baker WJ; Simmons MY, 2018, 'Singlet-triplet minus mixing and relaxation lifetimes in a double donor dot', Applied Physics Letters, vol. 112, http://dx.doi.org/10.1063/1.5021500
    Journal articles | 2018
    Hile SJ; Fricke L; House MG; Peretz E; Chen CY; Wang Y; Broome M; Gorman SK; Keizer JG; Rahman R; Simmons MY, 2018, 'Addressable electron spin resonance using donors and donor molecules in silicon', Science Advances, vol. 4, http://dx.doi.org/10.1126/sciadv.aaq1459
    Journal articles | 2017
    Broome MA; Watson TF; Keith D; Gorman SK; House MG; Keizer JG; Hile SJ; Baker W; Simmons MY, 2017, 'High-Fidelity Single-Shot Singlet-Triplet Readout of Precision-Placed Donors in Silicon', Physical Review Letters, vol. 119, http://dx.doi.org/10.1103/PhysRevLett.119.046802
    Journal articles | 2017
    Gorman SK; He Y; House MG; Keizer JG; Keith D; Fricke L; Hile SJ; Broome MA; Simmons MY, 2017, 'Tunneling Statistics for Analysis of Spin-Readout Fidelity', Physical Review Applied, vol. 8, http://dx.doi.org/10.1103/PhysRevApplied.8.034019
    Journal articles | 2016
    Broome MA; Gorman SK; Keizer JG; Watson TF; Hile SJ; Baker WJ; Simmons MY, 2016, 'Mapping the chemical potential landscape of a triple quantum dot', Physical Review B, vol. 94, http://dx.doi.org/10.1103/PhysRevB.94.054314
    Journal articles | 2016
    Gorman SK; Broome MA; Keizer JG; Watson TF; Hile SJ; Baker WJ; Simmons MY, 2016, 'Extracting inter-dot tunnel couplings between few donor quantum dots in silicon', New Journal of Physics, vol. 18, http://dx.doi.org/10.1088/1367-2630/18/5/053041
    Journal articles | 2015
    Bietti S; Bocquel J; Adorno S; Mano T; Keizer JG; Koenraad PM; Sanguinetti S, 2015, 'Precise shape engineering of epitaxial quantum dots by growth kinetics', Physical Review B - Condensed Matter and Materials Physics, vol. 92, http://dx.doi.org/10.1103/PhysRevB.92.075425
    Journal articles | 2015
    Keizer JG; Koelling S; Koenraad PM; Simmons MY, 2015, 'Suppressing Segregation in Highly Phosphorus Doped Silicon Monolayers', ACS Nano, vol. 9, pp. 12537 - 12541, http://dx.doi.org/10.1021/acsnano.5b06299
    Journal articles | 2015
    Keizer JG; McKibbin SR; Simmons MY, 2015, 'The Impact of Dopant Segregation on the Maximum Carrier Density in Si:P Multilayers', ACS Nano, vol. 9, pp. 7080 - 7084, http://dx.doi.org/10.1021/acsnano.5b01638
    Journal articles | 2014
    Grossi DF; Smereka P; Keizer JG; Ulloa JM; Koenraad PM, 2014, 'Erratum: "Height control of self-assembled quantum dots by strain engineering during capping" (Applied Physics Letters (2014) 105, (143104))', Applied Physics Letters, vol. 105, http://dx.doi.org/10.1063/1.4901731
    Journal articles | 2014
    Grossi DF; Smereka P; Keizer JG; Ulloa JM; Koenraad PM, 2014, 'Height control of self-assembled quantum dots by strain engineering during capping', Applied Physics Letters, vol. 105, http://dx.doi.org/10.1063/1.4897345
    Journal articles | 2014
    House MG; Peretz E; Keizer JG; Hile SJ; Simmons MY, 2014, 'Single-charge detection by an atomic precision tunnel junction', Applied Physics Letters, vol. 104, http://dx.doi.org/10.1063/1.4869032
    Journal articles | 2014
    Keizer JG; Ulloa JM; Utrilla AD; Koenraad PM, 2014, 'InAs quantum dot morphology after capping with In, N, Sb alloyed thin films', Applied Physics Letters, vol. 104, http://dx.doi.org/10.1063/1.4864159
    Journal articles | 2014
    McKibbin SR; Polley CM; Scappucci G; Keizer JG; Simmons MY, 2014, 'Low resistivity, super-saturation phosphorus-in-silicon monolayer doping', Applied Physics Letters, vol. 104, http://dx.doi.org/10.1063/1.4869111
    Journal articles | 2013
    Urbańczyk A; Keizer JG; Koenraad PM; Nötzel R, 2013, 'Long wavelength (>1.55 μm) room temperature emission and anomalous structural properties of InAs/GaAs quantum dots obtained by conversion of in nanocrystals', Applied Physics Letters, vol. 102, http://dx.doi.org/10.1063/1.4792700
    Journal articles | 2012
    Jovanov V; Eissfeller T; Kapfinger S; Clark EC; Klotz F; Bichler M; Keizer JG; Koenraad PM; Brandt MS; Abstreiter G; Finley JJ, 2012, 'Highly nonlinear excitonic Zeeman spin splitting in composition-engineered artificial atoms', Physical Review B - Condensed Matter and Materials Physics, vol. 85, http://dx.doi.org/10.1103/PhysRevB.85.165433
    Journal articles | 2012
    Keizer JG; Henriques AB; Maia ADB; Quivy AA; Koenraad PM, 2012, 'Atomically resolved study of the morphology change of InAs/GaAs quantum dot layers induced by rapid thermal annealing', Applied Physics Letters, vol. 101, http://dx.doi.org/10.1063/1.4770371
    Journal articles | 2012
    Keizer JG; Koenraad PM; Smereka P; Ulloa JM; Guzman A; Hierro A, 2012, 'Kinetic Monte Carlo simulations and cross-sectional scanning tunneling microscopy as tools to investigate the heteroepitaxial capping of self-assembled quantum dots', Physical Review B - Condensed Matter and Materials Physics, vol. 85, http://dx.doi.org/10.1103/PhysRevB.85.155326
    Journal articles | 2011
    Giddings AD; Keizer JG; Hara M; Hamhuis GJ; Yuasa H; Fukuzawa H; Koenraad PM, 2011, 'Composition profiling of InAs quantum dots and wetting layers by atom probe tomography and cross-sectional scanning tunneling microscopy', Physical Review B - Condensed Matter and Materials Physics, vol. 83, http://dx.doi.org/10.1103/PhysRevB.83.205308
    Journal articles | 2011
    Jo M; Keizer JG; Mano T; Koenraad PM; Sakoda K, 2011, 'Self-assembly of GaAs quantum wires grown on (311)A substrates by droplet epitaxy', Applied Physics Express, vol. 4, http://dx.doi.org/10.1143/APEX.4.055501
    Journal articles | 2011
    Jovanov V; Eissfeller T; Kapfinger S; Clark EC; Klotz F; Bichler M; Keizer JG; Koenraad PM; Abstreiter G; Finley JJ, 2011, 'Observation and explanation of strong electrically tunable exciton g factors in composition engineered In(Ga)As quantum dots', Physical Review B - Condensed Matter and Materials Physics, vol. 83, http://dx.doi.org/10.1103/PhysRevB.83.161303
    Journal articles | 2011
    Keizer JG; Bozkurt M; Bocquel J; Mano T; Noda T; Sakoda K; Clark EC; Bichler M; Abstreiter G; Finley JJ; Lu W; Rohel T; Folliot H; Bertru N; Koenraad PM, 2011, 'Shape control of quantum dots studied by cross-sectional scanning tunneling microscopy', Journal of Applied Physics, vol. 109, http://dx.doi.org/10.1063/1.3577960
    Journal articles | 2011
    Keizer JG; Jo M; Mano T; Noda T; Sakoda K; Koenraad PM, 2011, 'Erratum: Structural atomic-scale analysis of GaAs/AlGaAs quantum wires and quantum dots grown by droplet epitaxy on a (311) A substrate (Applied Physics Letters (2011) 98 (193112))', Applied Physics Letters, vol. 99, http://dx.doi.org/10.1063/1.3633014
    Journal articles | 2011
    Keizer JG; Jo M; Mano T; Noda T; Sakoda K; Koenraad PM, 2011, 'Structural atomic-scale analysis of GaAs/AlGaAs quantum wires and quantum dots grown by droplet epitaxy on a (311)A substrate', Applied Physics Letters, vol. 98, http://dx.doi.org/10.1063/1.3589965
    Journal articles | 2011
    Lu W; Bozkurt M; Keizer JG; Rohel T; Folliot H; Bertru N; Koenraad PM, 2011, 'Shape and size control of InAs/InP (113)B quantum dots by Sb deposition during the capping procedure', Nanotechnology, vol. 22, http://dx.doi.org/10.1088/0957-4484/22/5/055703
    Journal articles | 2010
    Keizer JG; Bocquel J; Koenraad PM; Mano T; Noda T; Sakoda K, 2010, 'Atomic scale analysis of self assembled GaAs/AlGaAs quantum dots grown by droplet epitaxy', Applied Physics Letters, vol. 96, http://dx.doi.org/10.1063/1.3303979
    Journal articles | 2010
    Keizer JG; Clark EC; Bichler M; Abstreiter G; Finley JJ; Koenraad PM, 2010, 'An atomically resolved study of InGaAs quantum dot layers grown with an indium flush step', Nanotechnology, vol. 21, http://dx.doi.org/10.1088/0957-4484/21/21/215705
    Journal articles | 2010
    Kleemans NAJM; Van Bree J; Govorov AO; Keizer JG; Hamhuis GJ; Nötzel R; Silov AY; Koenraad PM, 2010, 'Many-body exciton states in self-assembled quantum dots coupled to a Fermi sea', Nature Physics, vol. 6, pp. 534 - 538, http://dx.doi.org/10.1038/nphys1673
    Journal articles | 2009
    Keizer JG; Garleff JK; Koenraad PM, 2009, 'Simple and efficient scanning tunneling luminescence detection at low-temperature', Review of Scientific Instruments, vol. 80, http://dx.doi.org/10.1063/1.3274675
    Journal articles | 2008
    Paffen ML; Keizer JG; de Winter GV; Arends AJ; Hendrikx AJ, 2008, 'A comparison of the physical properties of four new generation flexible ureteroscopes: (De)flection, flow properties, torsion stiffness, and optical characteristics: Editorial comment', International Braz J Urol, vol. 34, pp. 776
    Journal articles | 2008
    Paffen MLJE; Keizer JG; De Winter GV; Arends AJ; Hendrikx AJM, 2008, 'A comparison of the physical properties of four new generation flexible ureteroscopes: (de)flection, flow properties, torsion stiffness, and optical characteristics', Journal of Endourology, vol. 22, pp. 2227 - 2234, http://dx.doi.org/10.1089/end.2008.0371
    Journal articles | 2006
    Broks BHP; Keizer JG; Zijlmans RAB; Van Der Mullen JJAM, 2006, 'Modelling of a pinched cascaded arc light source using argon', Plasma Sources Science and Technology, vol. 15, pp. 865 - 872, http://dx.doi.org/10.1088/0963-0252/15/4/033
  • Preprints | 2022
    Donnelly MB; Keizer JG; Chung Y; Simmons MY, 2022, 3-Dimensional Tuning of an Atomically Defined Silicon Tunnel Junction, http://dx.doi.org/10.48550/arxiv.2211.02180
    Patents | 2019
    Simmons M; Keizer J; Koch M, 2019, A method of fabricating a three dimensional electronic structure, Patent No. United States patent no. 10373914; Australia patent no. 2017203949, http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=10373914.PN.&OS=PN/10373914&RS=PN/10373914
    Preprints | 2018
    Broome MA; Gorman SK; House MG; Hile SJ; Keizer JG; Keith D; Hill CD; Watson TF; Baker WJ; Hollenberg LCL; Simmons MY, 2018, Two-Electron Spin Correlations in Precision Placed Donors in Silicon, http://dx.doi.org/10.48550/arxiv.1807.10295
    Preprints | 2018
    Broome MA; Watson TF; Keith D; Gorman SK; House MG; Keizer JG; Hile SJ; Baker W; Simmons MY, 2018, High Fidelity Single-Shot Singlet-Triplet Readout of Precision Placed Donors in Silicon, http://dx.doi.org/10.48550/arxiv.1807.10285
    Preprints | 2018
    Gorman SK; Broome MA; House MG; Hile SJ; Keizer JG; Keith D; Watson TF; Baker WJ; Simmons MY, 2018, Singlet-triplet minus mixing and relaxation lifetimes in a double donor dot, http://dx.doi.org/10.48550/arxiv.1807.10289
    Preprints | 2018
    Hile SJ; Fricke L; House MG; Peretz E; Chen CY; Wang Y; Broome M; Gorman SK; Keizer JG; Rahman R; Simmons MY, 2018, Addressable electron spin resonance using donors and donor molecules in silicon, http://dx.doi.org/10.48550/arxiv.1807.10290
    Preprints | 2018
    Keith D; Gorman SK; Kranz L; He Y; Keizer JG; Broome MA; Simmons MY, 2018, Benchmarking high fidelity single-shot readout of semiconductor qubits, http://dx.doi.org/10.48550/arxiv.1811.03630
    Preprints | 2017
    Gorman SK; He Y; House MG; Keizer JG; Keith D; Fricke L; Hile SJ; Broome MA; Simmons MY, 2017, Tunneling statistics for analysis of spin-readout fidelity, http://dx.doi.org/10.48550/arxiv.1710.02243
    Preprints | 2016
    Broome MA; Gorman SK; Keizer JG; Watson TF; Hile SJ; Baker WJ; Simmons MY, 2016, Mapping the Chemical Potential Landscape of a Triple Quantum Dot, http://dx.doi.org/10.48550/arxiv.1609.03381
    Preprints | 2016
    Gorman SK; Broome MA; Keizer JG; Watson TF; Hile SJ; Baker WJ; Simmons MY, 2016, Extracting inter-dot tunnel couplings between few donor quantum dots in silicon, http://dx.doi.org/10.48550/arxiv.1606.00851
    Preprints | 2014
    House MG; Peretz E; Keizer JG; Hile SJ; Simmons MY, 2014, Single-charge detection by an atomic precision tunnel junction, http://dx.doi.org/10.48550/arxiv.1403.5320
    Preprints | 2011
    Jovanov V; Eissfeller T; Kapfinger S; Clark EC; Klotz F; Bichler M; Keizer JG; Koenraad PM; Brandt MS; Abstreiter G; Finley JJ, 2011, Highly Non-linear Excitonic Zeeman Spin-Splitting in Composition-Engineered Artificial Atoms, http://dx.doi.org/10.48550/arxiv.1112.2585
    Preprints | 2010
    Giddings AD; Keizer JG; Hara M; Hamhuis GJ; Yuasa H; Fukuzawa H; Koenraad PM, 2010, Composition profiling InAs quantum dots and wetting layers by atom probe tomography and cross-sectional scanning tunnelling microscopy, http://dx.doi.org/10.48550/arxiv.1010.5888
    Conference Papers | 2010
    Keizer JG; Bozkurt M; Bocquel J; Koenraad PM; Mano T; Noda T; Sakoda K; Clark EC; Bichler M; Abstreiter G; Finley JJ; Lu W; Rohel T; Folliot H; Bertru N, 2010, 'Shape Control of QDs Studied by Cross-sectional Scanning Tunneling Microscopy', in JOURNAL OF THE KOREAN PHYSICAL SOCIETY, KOREAN PHYSICAL SOC, SOUTH KOREA, Seoul, pp. 1244 - 1250, presented at 30th International Conference on the Physics of Semiconductors (ICPS-30), SOUTH KOREA, Seoul, 25 July 2010 - 30 July 2010, http://dx.doi.org/10.3938/jkps.58.1244
    Preprints | 2010
    Keizer JG; Bozkurt M; Bocquel J; Koenraad PM; Mano T; Noda T; Sakoda K; Clark EC; Bichler M; Abstreiter G; Finley JJ; Lu W; Rohel T; Folliot H; Bertru N, 2010, Shape control of QDs studied by cross-sectional scanning tunneling microscopy, http://dx.doi.org/10.48550/arxiv.1011.3316