Photoionisation detection of a single Er3+ ion with sub-100-ns time resolution
Photoionisation detection of a single Er3+ ion with sub-100-ns time resolution
Efficient detection of single optical centers in solids is essential for quantum information processing, sensing, and single-photon generation applications. In this work, we use radio-frequency (RF) reflectometry to electrically detect the photoionization induced by a single Er$^{3+}$ ion in Si. The high bandwidth and sensitivity of the RF reflectometry provide …