President

2024

Bounds to electron spin qubit variability for scalable CMOS architectures

Cifuentes, J. D., Tanttu, T., Gilbert, W., Huang, J. Y., Vahapoglu, E., Leon, R. C. C., Serrano, S., Otter, D., Dunmore, D., Mai, P. Y., Schlattner, F., Feng, M. K., Itoh, K., Abrosimov, N., Pohl, H. J., Thewalt, M., Laucht, A., Yang, C. H., Escott, C. C. & Lim, W. H. & 4 others, Hudson, F. E., Rahman, R., Dzurak, A. S. & Saraiva, A., 2024 Dec, In: Nature communications. 15, 1, 4299.

Research output: Contribution to journal › Article › peer-review

Open Access

7 Citations (Scopus)

Improved Placement Precision of Donor Spin Qubits in Silicon using Molecule Ion Implantation

Holmes, D., Wilhelm, B., Jakob, A. M., Yu, X., Hudson, F. E., Itoh, K. M., Dzurak, A. S., Jamieson, D. N. & Morello, A., 2024 Mar, In: Advanced Quantum Technologies. 7, 3, 2300316.

Research output: Contribution to journal › Article › peer-review

Open Access

3 Citations (Scopus)

Navigating the 16-dimensional Hilbert space of a high-spin donor qudit with electric and magnetic fields

Fernández de Fuentes, I., Botzem, T., Johnson, M. A. I., Vaartjes, A., Asaad, S., Mourik, V., Hudson, F. E., Itoh, K. M., Johnson, B. C., Jakob, A. M., McCallum, J. C., Jamieson, D. N., Dzurak, A. S. & Morello, A., 2024 Dec, In: Nature communications. 15, 1, 1380.

Research output: Contribution to journal › Article › peer-review

Open Access

10 Citations (Scopus)

Silicon spin qubit noise characterization using real-time feedback protocols and wavelet analysis

Dumoulin Stuyck, N., Seedhouse, A. E., Serrano, S., Tanttu, T., Gilbert, W., Huang, J. Y., Hudson, F., Itoh, K. M., Laucht, A., Lim, W. H., Yang, C. H., Saraiva, A. & Dzurak, A. S., 2024 Mar 11, In: Applied Physics Letters. 124, 11, 114003.

Research output: Contribution to journal › Article › peer-review

Open Access

5 Citations (Scopus)

2023

An electrically driven single-atom “flip-flop” qubit

Savytskyy, R., Botzem, T., de Fuentes, I. F., Joecker, B., Pla, J. J., Hudson, F. E., Itoh, K. M., Jakob, A. M., Johnson, B. C., Jamieson, D. N., Dzurak, A. S. & Morello, A., 2023 Feb, In: Science Advances. 9, 6, eadd9408.

Research output: Contribution to journal › Article › peer-review

Open Access

14 Citations (Scopus)

Control of dephasing in spin qubits during coherent transport in silicon

Feng, M. K., Yoneda, J., Huang, W., Su, Y., Tanttu, T., Yang, C. H., Cifuentes, J. D., Chan, K. W., Gilbert, W., Leon, R. C. C., Hudson, F. E., Itoh, K. M., Laucht, A., Dzurak, A. S. & Saraiva, A., 2023 Feb 15, In: Physical Review B. 107, 8, 085427.

Research output: Contribution to journal › Article › peer-review

Open Access

3 Citations (Scopus)

On-demand electrical control of spin qubits

Gilbert, W., Tanttu, T., Lim, W. H., Feng, M. K., Huang, J. Y., Cifuentes, J. D., Serrano, S., Mai, P. Y., Leon, R. C. C., Escott, C. C., Itoh, K. M., Abrosimov, N. V., Pohl, H. J., Thewalt, M. L. W., Hudson, F. E., Morello, A., Laucht, A., Yang, C. H., Saraiva, A. & Dzurak, A. S., 2023 Feb, In: Nature Nanotechnology. 18, 2, p. 131-136 6 p.

Research output: Contribution to journal › Article › peer-review

Open Access

33 Citations (Scopus)

2022

Beating the Thermal Limit of Qubit Initialization with a Bayesian Maxwell's Demon

Johnson, M. A. I., Mądzik, M. T., Hudson, F. E., Itoh, K. M., Jakob, A. M., Jamieson, D. N., Dzurak, A. & Morello, A., 2022 Oct, In: Physical Review X. 12, 4, 041008.

Research output: Contribution to journal › Article › peer-review

Open Access

12 Citations (Scopus)

Fast Bayesian Tomography of a Two-Qubit Gate Set in Silicon

Evans, T. J., Huang, W., Yoneda, J., Harper, R., Tanttu, T., Chan, K. W., Hudson, F. E., Itoh, K. M., Saraiva, A., Yang, C. H., Dzurak, A. S. & Bartlett, S. D., 2022 Feb, In: Physical Review Applied. 17, 2, 024068.

Research output: Contribution to journal › Article › peer-review

Open Access

12 Citations (Scopus)

Floquet Engineering Using Pulse Driving in a Diamond Two-Level System under Large-Amplitude Modulation

Nishimura, S., Itoh, K. M., Ishi-Hayase, J., Sasaki, K. & Kobayashi, K., 2022 Dec, In: Physical Review Applied. 18, 6, 064023.

Research output: Contribution to journal › Article › peer-review

Open Access

6 Citations (Scopus)

Implementation of an advanced dressing protocol for global qubit control in silicon

Hansen, I., Seedhouse, A. E., Chan, K. W., Hudson, F. E., Itoh, K. M., Laucht, A., Saraiva, A., Yang, C. H. & Dzurak, A. S., 2022 Sept 1, In: Applied Physics Reviews. 9, 3, 031409.

Research output: Contribution to journal › Article › peer-review

Open Access

22 Citations (Scopus)

Optimization of optical spin readout of the nitrogen-vacancy center in diamond based on spin relaxation model

Nakamura, Y., Watanabe, H., Sumiya, H., Itoh, K. M., Sasaki, K., Ishi-Hayase, J. & Kobayashi, K., 2022 May 1, In: AIP Advances. 12, 5, 055215.

Research output: Contribution to journal › Article › peer-review

Open Access

Precision tomography of a three-qubit donor quantum processor in silicon

Mądzik, M. T., Asaad, S., Youssry, A., Joecker, B., Rudinger, K. M., Nielsen, E., Young, K. C., Proctor, T. J., Baczewski, A. D., Laucht, A., Schmitt, V., Hudson, F. E., Itoh, K. M., Jakob, A. M., Johnson, B. C., Jamieson, D. N., Dzurak, A. S., Ferrie, C., Blume-Kohout, R. & Morello, A., 2022 Jan 20, In: Nature. 601, 7893, p. 348-353 6 p.

Research output: Contribution to journal › Article › peer-review

167 Citations (Scopus)

2021

Bell-state tomography in a silicon many-electron artificial molecule

Leon, R. C. C., Yang, C. H., Hwang, J. C. C., Camirand Lemyre, J., Tanttu, T., Huang, W., Huang, J. Y., Hudson, F. E., Itoh, K. M., Laucht, A., Pioro-Ladrière, M., Saraiva, A. & Dzurak, A. S., 2021 Dec 1, In: Nature communications. 12, 1, 3228.

Research output: Contribution to journal › Article › peer-review

Open Access

20 Citations (Scopus)

Coherent spin qubit transport in silicon

Yoneda, J., Huang, W., Feng, M., Yang, C. H., Chan, K. W., Tanttu, T., Gilbert, W., Leon, R. C. C., Hudson, F. E., Itoh, K. M., Morello, A., Bartlett, S. D., Laucht, A., Saraiva, A. & Dzurak, A. S., 2021 Dec 1, In: Nature communications. 12, 1, 4114.

Research output: Contribution to journal › Article › peer-review

Open Access

80 Citations (Scopus)

Conditional quantum operation of two exchange-coupled single-donor spin qubits in a MOS-compatible silicon device

Ma̧dzik, M. T., Laucht, A., Hudson, F. E., Jakob, A. M., Johnson, B. C., Jamieson, D. N., Itoh, K. M., Dzurak, A. S. & Morello, A., 2021 Dec 1, In: Nature communications. 12, 1, 181.

Research output: Contribution to journal › Article › peer-review

Open Access

37 Citations (Scopus)

Efficient Discrete Feature Encoding for Variational Quantum Classifier

Yano, H., Suzuki, Y., Itoh, K. M., Raymond, R. & Yamamoto, N., 2021, In: IEEE Transactions on Quantum Engineering. 2, 3103214.

Research output: Contribution to journal › Article › peer-review

Open Access

29 Citations (Scopus)

Electrical control of the g tensor of the first hole in a silicon MOS quantum dot

Liles, S. D., Martins, F., Miserev, D. S., Kiselev, A. A., Thorvaldson, I. D., Rendell, M. J., Jin, I. K., Hudson, F. E., Veldhorst, M., Itoh, K. M., Sushkov, O. P., Ladd, T. D., Dzurak, A. S. & Hamilton, A. R., 2021 Dec 15, In: Physical Review B. 104, 23, 235303.

Research output: Contribution to journal › Article › peer-review

Open Access

33 Citations (Scopus)

Exchange Coupling in a Linear Chain of Three Quantum-Dot Spin Qubits in Silicon

Chan, K. W., Sahasrabudhe, H., Huang, W., Wang, Y., Yang, H. C., Veldhorst, M., Hwang, J. C. C., Mohiyaddin, F. A., Hudson, F. E., Itoh, K. M., Saraiva, A., Morello, A., Laucht, A., Rahman, R. & Dzurak, A. S., 2021 Feb 10, In: Nano Letters. 21, 3, p. 1517-1522 6 p.

Research output: Contribution to journal › Article › peer-review

Open Access

27 Citations (Scopus)

Materials challenges and opportunities for quantum computing hardware

de Leon, N. P., Itoh, K. M., Kim, D., Mehta, K. K., Northup, T. E., Paik, H., Palmer, B. S., Samarth, N., Sangtawesin, S. & Steuerman, D. W., 2021 Apr 16, In: Science. 372, 6539, eabb2823.

Research output: Contribution to journal › Review article › peer-review

322 Citations (Scopus)

Observation of longitudinal magnetic fluctuations at a first-order ferromagnetic quantum phase transition in UGe2

Noma, Y., Kotegawa, H., Kubo, T., Tou, H., Harima, H., Haga, Y., Yamamoto, E., Onuki, Y., Itoh, K. M., Nakamura, A., Homma, Y., Honda, F. & Aoki, D., 2021 Jul 1, In: Journal of the Physical Society of Japan. 90, 7, 073707.

Research output: Contribution to journal › Article › peer-review

Open Access

1 Citation (Scopus)

Pauli Blockade in Silicon Quantum Dots with Spin-Orbit Control

Seedhouse, A. E., Tanttu, T., Leon, R. C. C., Zhao, R., Tan, K. Y., Hensen, B., Hudson, F. E., Itoh, K. M., Yoneda, J., Yang, C. H., Morello, A., Laucht, A., Coppersmith, S. N., Saraiva, A. & Dzurak, A. S., 2021 Jan, In: PRX Quantum. 2, 1, 010303.

Research output: Contribution to journal › Article › peer-review

Open Access

52 Citations (Scopus)

Wide-Field Dynamic Magnetic Microscopy Using Double-Double Quantum Driving of a Diamond Defect Ensemble

Kazi, Z., Shelby, I. M., Watanabe, H., Itoh, K. M., Shutthanandan, V., Wiggins, P. A. & Fu, K. M. C., 2021 May, In: Physical Review Applied. 15, 5, 054032.

Research output: Contribution to journal › Article › peer-review

Open Access

17 Citations (Scopus)

2020

^1-1Forefront of silicon quantum computing

Itoh, K. M., 2020 Sept 23, 2020 International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2020. Institute of Electrical and Electronics Engineers Inc., p. 1-2 2 p. 9241600. (International Conference on Simulation of Semiconductor Processes and Devices, SISPAD; vol. 2020-September).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

A silicon quantum-dot-coupled nuclear spin qubit

Hensen, B., Wei Huang, W., Yang, C. H., Wai Chan, K., Yoneda, J., Tanttu, T., Hudson, F. E., Laucht, A., Itoh, K. M., Ladd, T. D., Morello, A. & Dzurak, A. S., 2020 Jan 1, In: Nature Nanotechnology. 15, 1, p. 13-17 5 p.

Research output: Contribution to journal › Letter › peer-review

60 Citations (Scopus)

Coherent electrical control of a single high-spin nucleus in silicon

Asaad, S., Mourik, V., Joecker, B., Johnson, M. A. I., Baczewski, A. D., Firgau, H. R., Mądzik, M. T., Schmitt, V., Pla, J. J., Hudson, F. E., Itoh, K. M., McCallum, J. C., Dzurak, A. S., Laucht, A. & Morello, A., 2020 Mar 12, In: Nature. 579, 7798, p. 205-209 5 p.

Research output: Contribution to journal › Article › peer-review

95 Citations (Scopus)

Coherent spin control of s-, p-, d- and f-electrons in a silicon quantum dot

Leon, R. C. C., Yang, C. H., Hwang, J. C. C., Lemyre, J. C., Tanttu, T., Huang, W., Chan, K. W., Tan, K. Y., Hudson, F. E., Itoh, K. M., Morello, A., Laucht, A., Pioro-Ladrière, M., Saraiva, A. & Dzurak, A. S., 2020 Dec 1, In: Nature communications. 11, 1, 797.

Research output: Contribution to journal › Article › peer-review

Open Access

61 Citations (Scopus)

Construction and operation of a tabletop system for nanoscale magnetometry with single nitrogen-vacancy centers in diamond

Misonou, D., Sasaki, K., Ishizu, S., Monnai, Y., Itoh, K. M. & Abe, E., 2020 Feb 1, In: AIP Advances. 10, 2, 025206.

Research output: Contribution to journal › Article › peer-review

Open Access

20 Citations (Scopus)

Controllable freezing of the nuclear spin bath in a single-atom spin qubit

Madzi, M. T., Lad, T. D., Hudso, F. E., Ito, K. M., Jako, A. M., Johnso, B. C., McCallu, J. C., Jamieso, D. N., Dzura, A. S., Laucht, A. & Morello, A., 2020 Jul, In: Science Advances. 6, 27, eaba3442.

Research output: Contribution to journal › Article › peer-review

Open Access

23 Citations (Scopus)

Detection and control of single proton spins in a thin layer of diamond grown by chemical vapor deposition

Sasaki, K., Watanabe, H., Sumiya, H., Itoh, K. M. & Abe, E., 2020 Sept 14, In: Applied Physics Letters. 117, 11, 0016196.

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Operation of a silicon quantum processor unit cell above one kelvin

Yang, C. H., Leon, R. C. C., Hwang, J. C. C., Saraiva, A., Tanttu, T., Huang, W., Camirand Lemyre, J., Chan, K. W., Tan, K. Y., Hudson, F. E., Itoh, K. M., Morello, A., Pioro-Ladrière, M., Laucht, A. & Dzurak, A. S., 2020 Apr 16, In: Nature. 580, 7803, p. 350-354 5 p.

Research output: Contribution to journal › Article › peer-review

265 Citations (Scopus)

Oxidation-enhanced Si self-diffusion in isotopically modulated silicon nanopillars

Kiga, R., Hayashi, S., Miyamoto, S., Shimizu, Y., Nagai, Y., Endoh, T. & Itoh, K. M., 2020 Jan 31, In: Journal of Applied Physics. 127, 4, 045704.

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Spin coherence and depths of single nitrogen-vacancy centers created by ion implantation into diamond via screening masks

Ishizu, S., Sasaki, K., Misonou, D., Teraji, T., Itoh, K. M. & Abe, E., 2020 Jun 28, In: Journal of Applied Physics. 127, 24, 244502.

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

State-of-the-Art in Silicon Quantum Computer Development

Itoh, K. M., 2020 Jun, 2020 IEEE Silicon Nanoelectronics Workshop, SNW 2020. Institute of Electrical and Electronics Engineers Inc., p. 43-44 2 p. 9131614. (2020 IEEE Silicon Nanoelectronics Workshop, SNW 2020).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2019

Controlling Spin-Orbit Interactions in Silicon Quantum Dots Using Magnetic Field Direction

Tanttu, T., Hensen, B., Chan, K. W., Yang, C. H., Huang, W. W., Fogarty, M., Hudson, F., Itoh, K., Culcer, D., Laucht, A., Morello, A. & Dzurak, A., 2019 May 10, In: Physical Review X. 9, 2, 021028.

Research output: Contribution to journal › Article › peer-review

Open Access

74 Citations (Scopus)

Electron spin relaxation of single phosphorus donors in metal-oxide-semiconductor nanoscale devices

Tenberg, S. B., Asaad, S., Madzik, M. T., Johnson, M. A. I., Joecker, B., Laucht, A., Hudson, F. E., Itoh, K. M., Jakob, A. M., Johnson, B. C., Jamieson, D. N., McCallum, J. C., Dzurak, A. S., Joynt, R. & Morello, A., 2019 May 14, In: Physical Review B. 99, 20, 205306.

Research output: Contribution to journal › Article › peer-review

Open Access

25 Citations (Scopus)

Fabrication of Ge MOS with low interface trap density by ALD of Al₂O₃ on epitaxially grown Ge

Matsuoka, R., Shigesawa, E., Miyamoto, S., Sawano, K. & Itoh, K. M., 2019 Jan, In: Semiconductor Science and Technology. 34, 1, 014004.

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Fidelity benchmarks for two-qubit gates in silicon

Huang, W., Yang, C. H., Chan, K. W., Tanttu, T., Hensen, B., Leon, R. C. C., Fogarty, M. A., Hwang, J. C. C., Hudson, F. E., Itoh, K. M., Morello, A., Laucht, A. & Dzurak, A. S., 2019 May 23, In: Nature. 569, 7757, p. 532-536 5 p.

Research output: Contribution to journal › Article › peer-review

309 Citations (Scopus)

Silicon qubit fidelities approaching incoherent noise limits via pulse engineering

Yang, C. H., Chan, K. W., Harper, R., Huang, W., Evans, T., Hwang, J. C. C., Hensen, B., Laucht, A., Tanttu, T., Hudson, F. E., Flammia, S. T., Itoh, K. M., Morello, A., Bartlett, S. D. & Dzurak, A. S., 2019 Apr 1, In: Nature Electronics. 2, 4, p. 151-158 8 p.

Research output: Contribution to journal › Article › peer-review

162 Citations (Scopus)

Single-spin qubits in isotopically enriched silicon at low magnetic field

Zhao, R., Tanttu, T., Tan, K. Y., Hensen, B., Chan, K. W., Hwang, J. C. C., Leon, R. C. C., Yang, C. H., Gilbert, W., Hudson, F. E., Itoh, K. M., Kiselev, A. A., Ladd, T. D., Morello, A., Laucht, A. & Dzurak, A. S., 2019 Dec 1, In: Nature communications. 10, 1, 5500.

Research output: Contribution to journal › Article › peer-review

Open Access

58 Citations (Scopus)

Wide-field magnetic imaging of sub-50 nm ferromagnetic nanoparticles for time-resolved bio-mechanical orientation measurements

Kazi, Z., Shelby, I., Brunelle, N., Watanabe, H., Itoh, K. M., Wiggins, P. & Fu, K. M., 2019, CLEO: Applications and Technology, CLEO_AT 2019. Optica Publishing Group (formerly OSA), (Optics InfoBase Conference Papers; vol. Part F127-CLEO_AT 2019).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

2018

⁷³Ge-NMR study on magnetic fluctuations of ferromagnetic superconductor UGe₂

Noma, Y., Kotegawa, H., Kubo, T., Tou, H., Harima, H., Haga, Y., Yamamoto, E., Ōnuki, Y., Itoh, K. M., Haller, E. E., Nakamura, A., Homma, Y., Honda, F. & Aoki, D., 2018 May 1, In: Physica B: Condensed Matter. 536, p. 543-545 3 p.

Research output: Contribution to journal › Article › peer-review

Anisotropic magnetic fluctuations in ferromagnetic superconductor UGe₂:⁷³Ge-NQR study at ambient pressure

Noma, Y., Kotegawa, H., Kubo, T., Tou, H., Harima, H., Haga, Y., Yamamoto, E., Ōnuki, Y., Itoh, K. M., Haller, E. E., Nakamura, A., Homma, Y., Honda, F. & Aoki, D., 2018, In: Journal of the Physical Society of Japan. 87, 3, 033704.

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

A quantum-dot spin qubit with coherence limited by charge noise and fidelity higher than 99.9%

Yoneda, J., Takeda, K., Otsuka, T., Nakajima, T., Delbecq, M. R., Allison, G., Honda, T., Kodera, T., Oda, S., Hoshi, Y., Usami, N., Itoh, K. M. & Tarucha, S., 2018 Feb 1, In: Nature Nanotechnology. 13, 2, p. 102-106 5 p.

Research output: Contribution to journal › Article › peer-review

683 Citations (Scopus)

Assessment of a Silicon Quantum Dot Spin Qubit Environment via Noise Spectroscopy

Chan, K. W., Huang, W., Yang, C. H., Hwang, J. C. C., Hensen, B., Tanttu, T., Hudson, F. E., Itoh, K. M., Laucht, A., Morello, A. & Dzurak, A. S., 2018 Oct 5, In: Physical Review Applied. 10, 4, 044017.

Research output: Contribution to journal › Article › peer-review

Open Access

102 Citations (Scopus)

Coherent control of solid state nuclear spin nano-ensembles

Unden, T., Tomek, N., Weggler, T., Frank, F., London, P., Zopes, J., Degen, C., Raatz, N., Meijer, J., Watanabe, H., Itoh, K. M., Plenio, M. B., Naydenov, B. & Jelezko, F., 2018 Dec 1, In: npj Quantum Information. 4, 1, 39.

Research output: Contribution to journal › Article › peer-review

Open Access

22 Citations (Scopus)

Coherent control via weak measurements in P 31 single-atom electron and nuclear spin qubits

Muhonen, J. T., Dehollain, J. P., Laucht, A., Simmons, S., Kalra, R., Hudson, F. E., Dzurak, A. S., Morello, A., Jamieson, D. N., McCallum, J. C. & Itoh, K. M., 2018 Oct 5, In: Physical Review B. 98, 15, 155201.

Research output: Contribution to journal › Article › peer-review

Open Access

15 Citations (Scopus)

Determination of the position of a single nuclear spin from free nuclear precessions detected by a solid-state quantum sensor

Sasaki, K., Itoh, K. M. & Abe, E., 2018 Sept 13, In: Physical Review B. 98, 12, 121405.

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Electron spin resonance identification di-carbon-related centers in irradiated silicon

Hayashi, S., Saito, H., Itoh, K. M., Vlasenko, M. P. & Vlasenko, L. S., 2018 Apr 28, In: Journal of Applied Physics. 123, 16, 161592.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Electron spin resonance study of surface and oxide interface spin-triplet centers on (100) silicon wafers

Saito, H., Hayashi, S., Kusano, Y., Itoh, K. M., Vlasenko, M. P. & Vlasenko, L. S., 2018 Apr 28, In: Journal of Applied Physics. 123, 16, 161582.

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

President

Research output

Search results