Zobrazeno 1 - 10
of 572
pro vyhledávání: '"Yoneda, J."'
Autor:
Yoneda, J., Rojas-Arias, J. S., Stano, P., Takeda, K., Noiri, A., Nakajima, T., Loss, D., Tarucha, S.
Semiconductor qubits are appealing for building quantum processors as they may be densely integrated due to small footprint. However, a high density raises the issue of noise correlated across different qubits, which is of practical concern for scala
Externí odkaz:
http://arxiv.org/abs/2208.14150
Autor:
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.
Publikováno v:
Phys. Rev. Applied 17, 024068 (2022)
Benchmarking and characterising quantum states and logic gates is essential in the development of devices for quantum computing. We introduce a Bayesian approach to self-consistent process tomography, called fast Bayesian tomography (FBT), and experi
Externí odkaz:
http://arxiv.org/abs/2107.14473
Autor:
Kojima, Y., Nakajima, T., Noiri, A., Yoneda, J., Otsuka, T., Takeda, K., Li, S., Bartlett, S. D., Ludwig, A., Wieck, A. D., Tarucha, S.
Publikováno v:
npj Quantum Information 7, 68 (2021)
Electron spin s in semiconductor quantum dot s have been intensively studied for implementing quantum computation and high fidelity single and two qubit operation s have recently been achieved . Quantum teleportation is a three qubit protocol exploit
Externí odkaz:
http://arxiv.org/abs/2011.04881
Autor:
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.
Publikováno v:
Nature Communications 12, 4114 (2021)
A fault-tolerant quantum processor may be configured using stationary qubits interacting only with their nearest neighbours, but at the cost of significant overheads in physical qubits per logical qubit. Such overheads could be reduced by coherently
Externí odkaz:
http://arxiv.org/abs/2008.04020
Autor:
Yoneda, J., Takeda, K., Noiri, A., Nakajima, T., Li, S., Kamioka, J., Kodera, T., Tarucha, S.
Publikováno v:
Nature Communications 11, 1144 (2020)
Single electron spins confined in silicon quantum dots hold great promise as a quantum computing architecture with demonstrations of long coherence times, high-fidelity quantum logic gates, basic quantum algorithms and device scalability. While singl
Externí odkaz:
http://arxiv.org/abs/1910.11963
Autor:
Takeda, K., Yoneda, J., Otsuka, T., Nakajima, T., Delbecq, M. R., Allison, G., Hoshi, Y., Usami, N., Itoh, K. M., Oda, S., Kodera, T., Tarucha, S.
Publikováno v:
npj Quantum Information (2018) 4:54
Electron spins confined in quantum dots are an attractive system to realize high-fidelity qubits owing to their long coherence time. With the prolonged spin coherence time, however, the control fidelity can be limited by systematic errors rather than
Externí odkaz:
http://arxiv.org/abs/1810.12040
Autor:
Noiri, A., Nakajima, T., Yoneda, J., Delbecq, M. R., Stano, P., Otsuka, T., Takeda, K., Amaha, S., Allison, G., Kawasaki, K., Kojima, Y., Ludwig, A., Wieck, A. D., Loss, D., Tarucha, S.
Publikováno v:
Nature Communications 9, 5066 (2018)
Single-spin qubits in semiconductor quantum dots proposed by Loss and DiVincenzo (LD qubits) hold promise for universal quantum computation with demonstrations of a high single-qubit gate fidelity above 99.9 % and two-qubit gates in conjunction with
Externí odkaz:
http://arxiv.org/abs/1804.04764
Publikováno v:
Phys. Rev. B 96, 155414 (2017)
We prepare a triple quantum dot with a separate contact lead to each dot to study Pauli spin blockade in the tunnel-coupled three dots in a row. We measure the tunneling current flowing between the center dot and either the left or right dot with the
Externí odkaz:
http://arxiv.org/abs/1710.03378
Autor:
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.
Publikováno v:
Nature Nanotechnology 13, 102-106 (2018)
Recent advances towards spin-based quantum computation have been primarily fuelled by elaborate isolation from noise sources, such as surrounding nuclear spins and spin-electric susceptibility, to extend spin coherence. In the meanwhile, addressable
Externí odkaz:
http://arxiv.org/abs/1708.01454
Autor:
Noiri, A., Kawasaki, K., Otsuka, T., Nakajima, T., Yoneda, J., Amaha, S., Delbecq, M. R., Takeda, K., Allison, G., Ludwig, A., Wieck, A. D., Tarucha, S.
Publikováno v:
Semiconductor Science and Technology 32, 084004 (2017)
A two-dimensional arrangement of quantum dots with finite inter-dot tunnel coupling provides a promising platform for studying complicated spin correlations as well as for constructing large-scale quantum computers. Here, we fabricate a tunnel-couple
Externí odkaz:
http://arxiv.org/abs/1705.10053