Phys.org January 17, 2023 Optically active defects in 2D materials, such as hexagonal boron nitride (hBN) and transition-metal dichalcogenides (TMDs), are an attractive class of single-photon emitters. An international team of researchers (USA – UC Santa Barbara, Japan) has demonstrated a novel approach to precisely align and embed hBN and TMDs within background-free silicon nitride microring resonators. Through the Purcell effect, high-purity hBN emitters exhibited a cavity-enhanced spectral coupling efficiency of up to 46% at room temperature, exceeding the theoretical limit (up to 40%) for cavity-free waveguide-emitter coupling and demonstrated nearly a 1 order of magnitude improvement over previous work. […]
Tag Archives: Photon emitters
Researchers in Sweden develop light emitter for quantum circuits
Phys.org May 10, 2021 For photons to deliver qubits on-demand in quantum systems, they need to be emitted in a deterministic, rather than probabilistic, fashion. An international team of researchers (Sweden, the Netherlands) has developed a process to harness the single-photon-emitting properties of hexagonal boron nitride (hBN) integrating it with silicon nitride waveguides to emit photons on-demand at room temperature. Their process precisely positions light-particles emitters in an integrated photonic circuit. In a hybrid approach, the team built the photonic circuits with respect to the quantum sources locations using a series of steps involving electron beam lithography and etching, while […]