Tunable Strain-Engineered Quantum Emitters in Bilayer WSe₂ : Towards Scalable Solid-State Quantum Photonic Platforms

The advancement of photonic quantum technologies depends on creating scalable solid-state platforms that allow coherent control and manipulation of multiple quantum emitters in the optical domain. Single-photon emitters localized in two-dimensional materials serve as an excellent platform for studying quantum many-body interactions, offering both spectral tunability and stronger light–matter interactions when integrated with on-chip nanophotonic structures. In this presentation, we demonstrate the coupling of strain-engineered localized quantum emitters in bilayer WSe₂ to a nanophotonic cavity, which mitigates decoherence and enhances radiative decay via the Purcell effect. Unlike monolayer WSe₂ , the bilayer structure effectively suppresses neutral and dark excitons, thereby facilitating higher single-photon purity. These emitters are highly tunable through laser induced strain, electric, and magnetic fields, and can reach near-lifetime-limited performance by minimizing local charge fluctuations and spectral diffusion. Our study mainly focuses on bringing two strain-induced emitters into resonance using electrostatic biasing. Moreover, Strain-induced single-photon emitters arranged in lattices and integrated with on-chip photonics offer a platform for boson sampling and quantum many-body research.