287 citations · 1k across the 27 of their papers we have counts for
27 papers
High-sensitivity silicon nitride microring resonator opto-fluidic sensor
Davey O. Armstrong, Sherif Ibrahim, Shirin Naserikarimvand +4
Photonic integrated circuit devices can be used as refractometric opto-fluidic sensors to detect the presence of analytes in solution at low concentrations. In this work, we invest…
Controlled epitaxy of room-temperature quantum emitters in gallium nitride
Katie M. Eggleton, Joseph K. Cannon, Sam G. Bishop +5
The ability to generate quantum light at room temperature on a mature semiconductor platform opens up new possibilities for quantum technologies. Heteroepitaxial growth of gallium…
Femtosecond laser-written nano-ablations containing bright antibunched emitters on gallium nitride
Yanzhao Guo, Giulio Coccia, Vibhav Bharadwaj +5
Femtosecond laser-writing offers distinct capabilities for fabrication, including three-dimensional, multi-material, and sub-diffraction-limited patterning. In particular, demonstr…
Enhanced quantum magnetometry with a laser-written integrated photonic diamond chip
Yanzhao Guo, Giulio Coccia, Vinaya Kumar Kavatamane +8
An ensemble of negatively charged nitrogen-vacancy centers in diamond can act as a precise quantum sensor even under ambient conditions. In particular, to optimize thier sensitivit…
Measuring photon correlation using imperfect detectors
Rachel N. Clark, Sam G. Bishop, Joseph K. Cannon +4
Single-photon detectors are ``blind" after the detection of a photon, and thereafter display a characteristic recovery in efficiency, during which the number of undetected photons…
Vector Magnetometry Using Shallow Implanted NV Centers in Diamond with Waveguide-Assisted Dipole Excitation and Readout
Sajedeh Shahbazi, Giulio Coccia, Argyro N. Giakoumaki +8
On-chip magnetic field sensing with Nitrogen-Vacancy (NV) centers in diamond requires scalable integration of 3D waveguides into diamond substrates. Here, we develop a sensing arra…
Laser-written waveguide-integrated coherent spins in diamond
Yanzhao Guo, John P. Hadden, Federico Gorrini +12
Quantum emitters, such as the negatively charged nitrogen-vacancy center in diamond, are attractive for quantum technologies such as nano-sensing, quantum information processing, a…
Determining Strain Components in a Diamond Waveguide from Zero-Field ODMR Spectra of NV Center Ensembles
M. Sahnawaz Alam, Federico Gorrini, Michał Gawełczyk +13
The negatively charged nitrogen-vacancy (NV) center in diamond has shown great potential in nanoscale sensing and quantum information processing due to its rich spin physics.…
Photo-dynamics of quantum emitters in aluminum nitride
Yanzhao Guo, John P. Hadden, Rachel N. Clark +2
Aluminum nitride is a technologically important wide bandgap semiconductor which has been shown to host bright quantum emitters. In this paper, we probe the photodynamics of quantu…
Evanescent-field assisted photon collection from quantum emitters under a solid immersion lens
S G Bishop, J K Cannon, H B Yagci +4
Solid-state quantum light sources are being intensively investigated for applications in quantum technology. A key challenge is to extract light from host materials with high refra…
Polarization study of single color centers in aluminum nitride
J. K. Cannon, S. G. Bishop, J. P. Hadden +2
Color centers in wide-bandgap semiconductors are a promising class of solid-state quantum light source, many of which operate at room temperature. We examine a family of color cent…
Fiber-taper collected emission from NV centers in high- diamond microdisks
Tamiko Masuda, J. P. E. Hadden, David P. Lake +3
Fiber-coupled microdisks are a promising platform for enhancing the spontaneous emission from color centers in diamond. The measured cavity-enhanced emission from the microdisk is…
Bullseye dielectric cavities for photon collection from a surface-mounted quantum-light-emitter
Reza Hekmati, John P. Hadden, Annie Mathew +3
Coupling light from a point source to a propagating mode is an important problem in nano-photonics and is essential for many applications in quantum optics. Circular "bullseye" cav…
Room-Temperature Quantum Emitter in Aluminum Nitride
Sam G. Bishop, John P. Hadden, Faris D. Alzahrani +4
A device that is able to produce single photons is a fundamental building block for a number of quantum technologies. Significant progress has been made in engineering quantum emis…
Design of free-space couplers for suspended triangular nano-beam waveguides
J. P. Hadden, Cobi Maynard, Daryl M. Beggs +2
Photonic waveguides with triangular cross section are being investigated for material systems such as diamond, glasses and gallium nitride, which lack easy options to create conven…
Enhanced light collection from a gallium nitride color center using a near index-matched solid immersion lens
S. G. Bishop, J. P. Hadden, R. Hekmati +3
Among the wide-bandgap compound semiconductors, gallium nitride is the most widely available material due to its prevalence in the solid state lighting and high-speed/high-power el…
On-chip single-photon subtraction by individual silicon vacancy centers in a laser-written diamond waveguide
Michael K. Koch, Michael Hoese, Vibhav Bharadwaj +6
Modifying light fields at single-photon level is a key challenge for upcoming quantum technologies and can be realized in a scalable manner through integrated quantum photonics. La…
An integrated magnetometry platform with stackable waveguide-assisted detection channels for sensing arrays
Michael Hoese, Michael K. Koch, Vibhav Bharadwaj +8
The negatively-charged NV-center in diamond has shown great success in nanoscale, high-sensitivity magnetometry. Efficient fluorescence detection is crucial for improving the s…
Quantum micro-nano devices fabricated in diamond by femtosecond laser and ion irradiation
Shane M. Eaton, J. P. Hadden, Vibhav Bharadwaj +12
Diamond has attracted great interest as a quantum technology platform thanks to its optically active nitrogen vacancy center (NV). The NV's ground state spin can be read out optica…
Influence of nanostructuring on silicon vacancy center spins in diamond pillars
Thomas Lutz, Tamiko Masuda, John P. Hadden +4
Color centers in diamond micro and nano structures are under investigation for a plethora of applications. However, obtaining high quality color centers in small structures is chal…
Polarized micro-Raman studies of femtosecond laser written stress-induced optical waveguides in diamond
B. Sotillo, A. Chiappini, V. Bharadwaj +7
Understanding the physical mechanisms of the refractive index modulation induced by femtosecond laser writing is crucial for tailoring the properties of the resulting optical waveg…
Integrated waveguides and deterministically positioned nitrogen vacancy centers in diamond created by femtosecond laser writing
J. P. Hadden, V. Bharadwaj, B. Sotillo +11
Diamond's nitrogen vacancy (NV) center is an optically active defect with long spin coherence times, showing great potential for both efficient nanoscale magnetometry and quantum i…
Diamond photonics platform enabled by femtosecond laser writing
Belen Sotillo, Vibhav Bharadwaj, J. P. Hadden +14
We demonstrate the first buried optical waveguides in diamond using focused femtosecond laser pulses. The properties of nitrogen vacancy centers are preserved in the waveguides, ma…
Single-crystal diamond low-dissipation cavity optomechanics
Matthew Mitchell, Behzad Khanaliloo, David P. Lake +3
Single-crystal diamond cavity optomechanical devices are a promising example of a hybrid quantum system: by coupling mechanical resonances to both light and electron spins, they ca…