358 citations · 1.3k across the 17 of their papers we have counts for
17 papers
Hybrid Integration of GaP Photonic Crystal Cavities with Silicon-Vacancy Centers in Diamond by Stamp-Transfer
Srivatsa Chakravarthi, Nicholas S. Yama, Alex Abulnaga +6
Optically addressable solid-state defects are emerging as one of the most promising qubit platforms for quantum networks. Maximizing photon-defect interaction by nanophotonic cavit…
Triply-Resonant Sum Frequency Conversion with Gallium Phosphide Ring Resonators
Alan D. Logan, Shivangi Shree, Srivatsa Chakravarthi +5
We demonstrate quasi-phase matched, triply-resonant sum frequency conversion in 10.6-um-diameter integrated gallium phosphide ring resonators. A small-signal, waveguide-to-waveguid…
Target-wavelength-trimmed second harmonic generation with gallium phosphide-on-nitride ring resonators
Lillian Thiel, Alan D. Logan, Srivatsa Chakravarthi +4
We demonstrate post-fabrication target-wavelength trimming with a gallium phosphide on silicon nitride integrated photonic platform using controlled electron-beam exposure of hydro…
Inverse-designed photon extractors for optically addressable defect qubits
Srivatsa Chakravarthi, Pengning Chao, Christian Pederson +6
Solid-state defect qubit systems with spin-photon interfaces show great promise for quantum information and metrology applications. Photon collection efficiency, however, presents…
400%/W second harmonic conversion efficiency in -diameter gallium phosphide-on-oxide resonators
Alan D. Logan, Michael Gould, Emma R. Schmidgall +7
Second harmonic conversion from 1550~nm to 775~nm with an efficiency of 400% W is demonstrated in a gallium phosphide (GaP) on oxide integrated photonic platform. The platfo…
The electrical conductivity tensor of -Ga2O3 analyzed by van der Pauw measurements: Inherent anisotropy, off-diagonal element, and the impact of grain boundaries
Christian Golz, Vanesa Hortelano, Fariba Hatami +3
The semiconducting oxide -Gallium Oxide (-GaO) possesses a monoclinic unit cell whose low symmetry generally leads to anisotropic physical properties. For example…
Frequency control of single quantum emitters in integrated photonic circuits
Emma R. Schmidgall, Srivatsa Chakravarthi, Michael Gould +4
Generating entangled graph states of qubits requires high entanglement rates, with efficient detection of multiple indistinguishable photons from separate qubits. Integrating defec…
Efficient extraction of zero-phonon-line photons from single nitrogen-vacancy centers in an integrated GaP-on-diamond platform
Michael Gould, Emma R. Schmidgall, Shabnam Dadgostar +2
Scaling beyond two-node quantum networks using nitrogen vacancy (NV) centers in diamond is limited by the low probability of collecting zero phonon line (ZPL) photons from single c…
GaAs/GaP quantum dots: Ensemble of direct and indirect heterostructures with room temperature optical emission
S. Dadgostar, J. Schmidtbauer, T. Boeck +7
We describe the optical emission and the carrier dynamics of an ensemble of self-assembled GaAs quantum dots embedded in GaP(001). The QD formation is driven by the 3.6 % lattice m…
A Large-Scale GaP-on-Diamond Integrated Photonics Platform for NV Center-Based Quantum Information
Michael Gould, Srivatsa Chakravarthi, Ian R. Christen +6
We present chip-scale transmission measurements for three key components of a GaP-on-diamond integrated photonics platform: waveguide-coupled disk resonators, directional couplers,…
Ultra-Low Threshold Monolayer Semiconductor Nanocavity Lasers
Sanfeng Wu, Sonia Buckley, John R. Schaibley +8
Engineering the electromagnetic environment of a nanoscale light emitter by a photonic cavity can significantly enhance its spontaneous emission rate through cavity quantum electro…
Control of Two-Dimensional Excitonic Light Emission via Photonic Crystal
Sanfeng Wu, Sonia Buckley, Aaron M. Jones +9
Monolayers of transition metal dichalcogenides (TMDCs) have emerged as new optoelectronic materials in the two dimensional (2D) limit, exhibiting rich spin-valley interplays, tunab…
Controlling the Spontaneous Emission Rate of Monolayer MoS in a Photonic Crystal Nanocavity
Xuetao Gan, Yuanda Gao, Kin Fai Mak +8
We report on controlling the spontaneous emission (SE) rate of a molybdenum disulfide (MoS) monolayer coupled with a planar photonic crystal (PPC) nanocavity. Spatially resolve…
Quasiresonant Excitation of InP/InGaP Quantum Dots Using Second Harmonic Generated in a Photonic Crystal Cavity
Sonia Buckley, Kelley Rivoire, Fariba Hatami +1
Indistinguishable single photons are necessary for quantum information processing applications. Resonant or quasiresonant excitation of single quantum dots provides greater single…
Second harmonic generation in GaP photonic crystal waveguides
Kelley Rivoire, Sonia Buckley, Fariba Hatami +1
We demonstrate enhanced second harmonic generation in a gallium phosphide photonic crystal waveguide with a measured external conversion efficiency of 5/W. Our resul…
Deterministic coupling of a single nitrogen vacancy center to a photonic crystal cavity
Dirk Englund, Brendan Shields, Kelley Rivoire +4
We describe and experimentally demonstrate a technique for deterministic coupling between a photonic crystal (PC) nanocavity and single emitters. The technique is based on in-situ…
Second harmonic generation in gallium phosphide photonic crystal nanocavities with ultralow continuous wave pump power
Kelley Rivoire, Ziliang Lin, Fariba Hatami +2
We demonstrate second harmonic generation in photonic crystal nanocavities fabricated in the semiconductor gallium phosphide. We observe second harmonic radiation at 750 nm with in…