Zobrazeno 1 - 10
of 2 027
pro vyhledávání: '"Nakajima, Takashi"'
Autor:
Rojas-Arias, Juan S., Kojima, Yohei, Takeda, Kenta, Stano, Peter, Nakajima, Takashi, Yoneda, Jun, Noiri, Akito, Kobayashi, Takashi, Loss, Daniel, Tarucha, Seigo
We measure and analyze noise-induced energy-fluctuations of spin qubits defined in quantum dots made of isotopically natural silicon. Combining Ramsey, time-correlation of single-shot measurements, and CPMG experiments, we cover the qubit noise power
Externí odkaz:
http://arxiv.org/abs/2408.13707
Autor:
Takeda, Kenta, Noiri, Akito, Nakajima, Takashi, Camenzind, Leon C., Kobayashi, Takashi, Sammak, Amir, Scappucci, Giordano, Tarucha, Seigo
Publikováno v:
npj Quantum Inf 10, 22 (2024)
Silicon-based spin qubits offer a potential pathway toward realizing a scalable quantum computer owing to their compatibility with semiconductor manufacturing technologies. Recent experiments in this system have demonstrated crucial technologies, inc
Externí odkaz:
http://arxiv.org/abs/2309.00225
Autor:
Wu, Yi-Hsien, Camenzind, Leon C., Noiri, Akito, Takeda, Kenta, Nakajima, Takashi, Kobayashi, Takashi, Chang, Chien-Yuan, Sammak, Amir, Scappucci, Giordano, Goan, Hsi-Sheng, Tarucha, Seigo
Because of their long coherence time and compatibility with industrial foundry processes, electron spin qubits are a promising platform for scalable quantum processors. A full-fledged quantum computer will need quantum error correction, which require
Externí odkaz:
http://arxiv.org/abs/2307.09031
Publikováno v:
Phys. Rev. B 108, 155306 (2023)
We analyze the polarization of nuclear spins in a quantum dot induced by a single-electron spin that is electrically driven to perform coherent Rabi oscillations. We derive the associated nuclear-spin polarization rate and analyze its dependence on t
Externí odkaz:
http://arxiv.org/abs/2306.11253
Autor:
Rojas-Arias, Juan S., Noiri, Akito, Stano, Peter, Nakajima, Takashi, Yoneda, Jun, Takeda, Kenta, Kobayashi, Takashi, Sammak, Amir, Scappucci, Giordano, Loss, Daniel, Tarucha, Seigo
Publikováno v:
Phys. Rev. Applied 20, 054024 (2023)
We detect correlations in qubit-energy fluctuations of non-neighboring qubits defined in isotopically purified Si/SiGe quantum dots. At low frequencies (where the noise is strongest), the correlation coefficient reaches 10% for a next-nearest-neighbo
Externí odkaz:
http://arxiv.org/abs/2302.11717
Autor:
Muto, Yui, Nakaso, Takumi, Shinozaki, Motoya, Aizawa, Takumi, Kitada, Takahito, Nakajima, Takashi, Delbecq, Matthieu R., Yoneda, Jun, Takeda, Kenta, Noiri, Akito, Ludwig, Arne, Wieck, Andreas D., Tarucha, Seigo, Kanemura, Atsunori, Shiga, Motoki, Otsuka, Tomohiro
Publikováno v:
APL Machine Learning 2, 026110 (2024)
Charge state recognition in quantum dot devices is important in the preparation of quantum bits for quantum information processing. Toward auto-tuning of larger-scale quantum devices, automatic charge state recognition by machine learning has been de
Externí odkaz:
http://arxiv.org/abs/2210.15070
Autor:
Kobayashi, Takashi, Nakajima, Takashi, Takeda, Kenta, Noiri, Akito, Yoneda, Jun, Tarucha, Seigo
Publikováno v:
npj Quantum Information 9, 52 (2023)
Feedback control of qubits is a highly demanded technique for advanced quantum information protocols such as quantum error correction. Here we demonstrate active reset of a silicon spin qubit using feedback control. The active reset is based on quant
Externí odkaz:
http://arxiv.org/abs/2209.02259
Autor:
Noiri, Akito, Takeda, Kenta, Nakajima, Takashi, Kobayashi, Takashi, Sammak, Amir, Scappucci, Giordano, Tarucha, Seigo
Publikováno v:
Nature Communications 13, 5740 (2022)
Control of entanglement between qubits at distant quantum processors using a two-qubit gate is an essential function of a scalable, modular implementation of quantum computation. Among the many qubit platforms, spin qubits in silicon quantum dots are
Externí odkaz:
http://arxiv.org/abs/2202.01357
Autor:
Hirayama, Takehisa, Morioka, Harumi, Sugisawa, Tatsuki, Shibukawa, Mari, Ebina, Junya, Hanashiro, Sayori, Nagasawa, Junpei, Yanagihashi, Masaru, Okuni, Ikuko, Nakajima, Takashi, Murakami, Yoshitaka, Yamanaka, Koji, Ebihara, Satoru, Kano, Osamu
Publikováno v:
In Journal of Clinical Neuroscience October 2024 128
Publikováno v:
In Optics and Laser Technology August 2024 175