Výsledky vyhledávání - "Nakamura, Ippei"

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Superconducting surface trap chips for microwave-driven trapped ions

Autor: Tsuchimoto, Yuta, Nakamura, Ippei, Shirai, Shotaro, Noguchi, Atsushi

Microwave-driven trapped ion logic gates offer a promising avenue for advancing beyond laser-based logic operations. In future microwave-based operations, however, the joule heat produced by large microwave currents flowing through narrow microwave e

Externí odkaz: http://arxiv.org/abs/2407.11443

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Compact atom source using fiber-based pulsed laser ablation

Autor: Osada, Alto, Tamaki, Ryuta, Lin, Wenbo, Nakamura, Ippei, Noguchi, Atsushi

We designed, demonstrated, and characterized an atom source based on fiber-based pulsed laser ablation. By using commercially available miniature lens system for focusing nanosecond pulsed laser of up to 225~$\mu$J delivered through a multimode fiber

Externí odkaz: http://arxiv.org/abs/2302.07639

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Coupling of a quantum memory and telecommunication wavelength photons for high-rate entanglement distribution in quantum repeaters

Autor: Mannami, Kyoko, Kondo, Takeshi, Tsuno, Tomoki, Miyashita, Takuto, Yoshida, Daisuke, Ito, Ko, Niizeki, Kazuya, Nakamura, Ippei, Hong, Feng-Lei, Horikiri, Tomoyuki

Publikováno v: Opt. Express 29, 41522-41533 (2021)

Quantum repeaters are indispensable tools for long-distance quantum communication. However, frequency matching between entangled photon sources and remote quantum memories (QMs) is difficult, which is an obstacle to the implementation of quantum repe

Externí odkaz: http://arxiv.org/abs/2112.01057

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Two-photon comb with wavelength conversion and 20-km distribution for quantum communication

Autor: Niizeki, Kazuya, Yoshida, Daisuke, Ito, Ko, Nakamura, Ippei, Takei, Nobuyuki, Okamura, Kotaro, Zheng, Ming-Yang, Xie, Xiu-Ping, Horikiri, Tomoyuki

Publikováno v: Communications Physics 3, 138 (2020)

Quantum computing and quantum communication, have been greatly developed in recent years and expected to contribute to quantum internet technologies, including cloud quantum computing and unconditionally secure communication. However, long-distance q

Externí odkaz: http://arxiv.org/abs/2010.05438

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Single-site-resolved imaging of ultracold atoms in a triangular optical lattice

Autor: Yamamoto, Ryuta, Ozawa, Hideki, Nak, David C., Nakamura, Ippei, Fukuhara, Takeshi

Publikováno v: New Journal of Physics 22, 123028 (2020)

We demonstrate single-site-resolved fluorescence imaging of ultracold $^{87}\mathrm{Rb}$ atoms in a triangular optical lattice by employing Raman sideband cooling. Combining a Raman transition at the D1 line and a photon scattering through an optical

Externí odkaz: http://arxiv.org/abs/2010.05200

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Optimization temperature sensitivity using the optically detected magnetic resonance spectrum of a nitrogen-vacancy center ensemble

Autor: Hayashi, Kan, Matsuzaki, Yuichiro, Taniguchi, Takashi, Shimo-Oka, Takaaki, Nakamura, Ippei, Onoda, Shinobu, Ohshima, Takeshi, Morishita, Hiroki, Fujiwara, Masanori, Saito, Shiro, Mizuochi, Norikazu

Publikováno v: Phys. Rev. Applied 10, 034009 (2018)

Temperature sensing with nitrogen vacancy (NV) centers using quantum techniques is very promising and further development is expected. Recently, the optically detected magnetic resonance (ODMR) spectrum of a high-density ensemble of the NV centers wa

Externí odkaz: http://arxiv.org/abs/1803.00341

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