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

• URL: http://arxiv.org/abs/2308.00995v1
• Date: Wed, 2 Aug 2023 08:06:52 GMT
• Title: Transform-Limited Photon Emission From a Lead-Vacancy Center in Diamond Above 10 K
• Authors: Peng Wang, Lev Kazak, Katharina Senkalla, Petr Siyushev, Ryotaro Abe, Takashi Taniguchi, Shinobu Onoda, Hiromitsu Kato, Toshiharu Makino, Mutsuko Hatano, Fedor Jelezko and Takayuki Iwasaki
• Abstract summary: We report the coherent optical property of a single negatively-charged lead-vacancy 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. 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 compared to other color centers in diamond.
• Score: 2.616955424974018
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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