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20242026
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quant-ph2026

Coherent Dark State Formation of a Lead-Vacancy Spin Qubit in Diamond

Yiyang Chen, Koyo Hirai, Tzyy Zheng Neo +7

A lead-vacancy (PbV) center in diamond exhibits coherent emission above the liquid helium temperature, making it highly attractive for quantum network applications. Here, we report…

quant-ph2025

Multichannel highly sensitive diamond quantum magnetometer

Atsumi Yoshimura, Ayumi Kanamoto, Naota Sekiguchi +9

We demonstrate a highly sensitive real-time magnetometry method at two measurement points. This magnetometry method is based on the frequency-division multiplexing of continuous-wa…

quant-ph2025

Optical charge state manipulation of lead-vacancy centers in diamond

Yiyang Chen, Yoshiyuki Miyamoto, Eiki Ota +5

Group-IV vacancy centers in diamond exhibit excellent optical and spin coherence properties, making them highly promising and scalable spin qubit candidates. Since only specific ch…

quant-ph2025

Narrow Inhomogeneous Distribution and Charge State Stabilization of Lead-Vacancy Centers in Diamond

Ryotaro Abe, Peng Wang, Takashi Taniguchi +4

Lead-vacancy (PbV) centers in diamond with a large ground state splitting are expected to be a building block of quantum network nodes. Due to the heaviness of the Pb atom, it is c…

quant-ph2024

Charge state transition of spectrally stabilized tin-vacancy centers in diamond

Keita Ikeda, Yiyang Chen, Peng Wang +5

Solid-state quantum emitters are an important platform for quantum information processing. The fabrication of the emitters with stable photon frequency and narrow linewidth is a fu…