Surface-passivated high-Q GaAs photonic crystal nanocavity with quantum dots
arXiv:2001.02377 · doi:10.1063/1.5144959
Abstract
Photonic crystal (PhC) nanocavities with high quality (Q) factors have attracted much attention because of their strong spatial and temporal light confinement capability. The resulting enhanced light-matter interactions are beneficial for diverse photonic applications, ranging from on-chip optical communications to sensing. However, currently achievable Q factors for active PhC nanocavities, which embed active emitters inside, are much lower than those of the passive structures because of large optical loss, presumably originating from light scattering by structural imperfections and/or optical absorptions. Here, we demonstrate a significant improvement of Q factors up to ~160,000 in GaAs active PhC nanocavities using a sulfur-based surface passivation technique. This value is the highest ever reported for any active PhC nanocavities with semiconductor quantum dots. The surface-passivated cavities also exhibit reduced variation in both Q factors and cavity resonant wavelengths. We find that the improvement in the cavity performance presumably arises from suppressed light absorption at the surface of the PhC's host material by performing a set of PL measurements in spectral and time domains. With the surface passivation technique, we also demonstrate a strongly-coupled single quantum dot-cavity system based on a PhC nanocavity with a high Q factor of ~100,000. These results will pave the way for advanced quantum dot-based cavity quantum electrodynamics and for GaAs micro/nanophotonic applications containing active emitters.
References in corpus (23)
- Quantum nature of a strongly-coupled single quantum dot-cavity system
- Controlling the Spontaneous Emission Rate of Single Quantum Dots in a 2D Photonic Crystal
- Resolving photon number states in a superconducting circuit
- Coherent generation of nonclassical light on a chip via photon-induced tunneling and blockade
- Ultrafast all-optical switching by single photons
- Ultra-low threshold, electrically pumped quantum dot photonic crystal nanocavity laser
- Strongly correlated photons on a chip
- Laser oscillation in a strongly coupled single quantum dot-nanocavity system
- Two-Photon Blockade in an Atom-Driven Cavity QED System
- Optimization of photonic crystal nanocavities based on deep learning
- Resolution of the mystery of counter-intuitive photon correlations in far off-resonance emission from a quantum dot-cavity system
- Emitters of -photon bundles
- Ultrafast photon-photon interaction in a strongly coupled quantum dot-cavity system
- A quantum logic gate between a solid-state quantum bit and a photon
- Investigation of Non Resonant Dot - Cavity Coupling in Two Dimensional Photonic Crystal Nanocavities
- Spontaneous two photon emission from a single quantum dot
- Dephasing of quantum dot exciton polaritons in electrically tunable nanocavities
- GaAs photonic crystal cavity with ultra-high Q: microwatt nonlinearity at 1.55 m
- Climbing the Jaynes-Cummings ladder by photon counting
- Quantum dot spectroscopy using cavity QED
- Investigation of the spectral triplet in strongly coupled quantum dot-nanocavity system
- Low-Threshold Surface-Passivated Photonic Crystal Nanocavity Laser
- Time-resolved vacuum Rabi oscillations in a quantum dot-nanocavity system
Cited by in corpus (14)
- Integrated quantum photonics with silicon carbide: challenges and prospects
- Chiral topological photonics with an embedded quantum emitter
- Topological cavity based on slow light topological edge mode for broadband Purcell enhancement
- A chiral topological add-drop filter for integrated quantum photonic circuits
- Cavity-Quantum Electrodynamics with Moiré Flatband Photonic Crystals
- Optimization and robustness of topological corner state in second-order topological photonic crystal
- Suppression of surface-related loss in a gated semiconductor microcavity
- Controlled-Phase Gate by Dynamic Coupling of Photons to a Two-Level Emitter
- Hybrid III-V diamond photonic platform for quantum nodes based on neutral silicon vacancy centers in diamond
- Strong coupling between a single quantum dot and an L4/3 photonic crystal nanocavity
- Quantifying and mitigating optical surface loss in suspended GaAs photonic integrated circuits
- Electroabsorption in gated GaAs nanophotonic waveguides
- Quantum repeaters based on individual electron spins and nuclear-spin-ensemble memories in quantum dots
- Telecommunication-wavelength two-dimensional photonic crystal cavities in a thin single-crystal diamond membrane