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arXiv · 2308.00995

Transform-Limited Photon Emission From a Lead-Vacancy Center in Diamond Above 10 K

Peng Wang·Lev Kazak·Katharina Senkalla·Petr Siyushev·Ryotaro Abe·Takashi Taniguchi·Shinobu Onoda·Hiromitsu Kato·Toshiharu Makino·Mutsuko Hatano·Fedor Jelezko·Takayuki Iwasaki
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Abstract

Transform-limited photon emission from quantum emitters is essential for high-fidelity entanglement generation. In this study, we report the coherent optical property of a single negatively-charged lead-vacancy (PbV) center in diamond. Photoluminescence excitation measurements reveal stable fluorescence with a linewidth of 39 MHz at 6 K, close to the transform-limit estimated from the lifetime measurement. We observe four orders of magnitude different linewidths of the two zero-phonon-lines, and find that that the phonon-induced relaxation in the ground state contributes to this huge difference in the linewidth. Due to the suppressed phonon absorption in the PbV center, we observe nearly transform-limited photon emission up to 16 K, demonstrating its high temperature robustness compared to other color centers in diamond.

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Peng Wang, Lev Kazak, Katharina Senkalla, Petr Siyushev, Ryotaro Abe, Takashi Taniguchi, Shinobu Onoda, Hiromitsu Kato, Toshiharu Makino, Mutsuko Hatano, Fedor Jelezko, Takayuki Iwasaki. 2023-08-02. Transform-Limited Photon Emission From a Lead-Vacancy Center in Diamond Above 10 K. https://arxiv.org/abs/2308.00995

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