Tunable Single-Photon Emission with Wafer-Scale Plasmonic Array

Bright, scalable, and deterministic single-photon emission (SPE) is essential for quantum optics, nanophotonics, and optical information systems. Recently, SPE from hexagonal boron nitride (h-BN) has attracted intense interest because it is optically active and stable at room temperature. Here, we demonstrate a tunable quantum emitter array in h-BN at room temperature by integrating a wafer-scale plasmonic array. The transient voltage electrophoretic deposition (EPD) reaction is developed to effectively enhance the filling of single-crystal nanometals in the designed patterns without aggregation, which ensures the fabricated array for tunable performances of these single-photon emitters. An enhancement of ∼500% of the SPE intensity of the h-BN emitter array is observed with a radiative quantum efficiency of up to 20% and a saturated count rate of more than 4.5 × 106 counts/s. These results suggest the integrated h-BN-plasmonic array as a promising platform for scalable and controllable SPE photonics at room temperature

Correlations between SI-QT_c (A), SD-QT_c (B), QT_c dispersion (C) and log_e cardiac T2* value.

<p>QT_c = corrected QT interval; SI-QT_c = smooth index of corrected QT intervals; SD-QT_c = standard deviation of corrected QT intervals.</p

Magnetocardiography-derived parameters in patients with patients with thalassemia major and control subjects.

<p>QT_c = corrected QT interval; SI-QT_c = smooth index of corrected QT intervals; SD-QT_c = standard deviation of corrected QT intervals.</p

ROC curves of SI-QT_c (A), SD-QT_c (B), QT_c dispersion (C), and cardiac T2* (D) for predicting the presence of adverse cardiac events.

<p>The optimal cut-off value (labeled as the black dot on the ROC curve), sensitivity, and specificity of each individual parameter are shown. Data in the parenthesis indicate 95% confidence interval of the area under curve (AUC). QT_c = corrected QT interval; SI-QT_c = smooth index of corrected QT intervals; SD-QT_c = standard deviation of corrected QT intervals.</p

Patient characteristics.

*<p>n = 33;</p>†<p>n = 47.</p><p>AV = atrioventricular; CMR = cardiac magnetic resonance; LV = left ventricular.</p

Construction of a QT_c contour map from magnetocardiography (MCG).

<p>Signals from 64-channel MCG traces before averaging, and the construction of repolarization map with a 21×21 resolution by signal-averaged vector-projected electrocardiogram (A). The spatial distribution of corrected QT (QT_c) intervals was displayed on a QT_c contour map (B).</p