118 citations · 418 across the 12 of their papers we have counts for
12 papers
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…
Laser-Inscribed Diamond Waveguide Resonantly Coupled to Diamond Microsphere
Nurperi Yavuz, Mustafa Mert Bayer, Hüseyin Ozan Cirkinoğlu +6
An all-diamond photonic circuit was implemented by integrating a diamond microsphere with a femtosecond-laser-written bulk diamond waveguide. The near surface waveguide was fabrica…
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…
Chromium Oxide Formation on Nanosecond and Femtosecond Laser Irradiated Thin Chromium Films
L. Kotsedi, V. Furlan, V. Bharadwaj +9
Thin coatings of Chromium oxide have been used for applications as absorbing material in solar cells, as protections for magnetic data recording devices and as shields in flexible…
Femtosecond laser written diamond waveguides - a step towards integrated photonics in the far infrared
Vibhav Bharadwaj, Yuchen Wang, Toney Teddy Fernandez +3
A first demonstration and complete characterization of mid-infrared waveguides in diamond are reported in detail. Waveguides were designed for 2.4 um and 8.6 um waveguiding, with t…
Femtosecond laser inscription of nonlinear photonic circuits in Gallium Lanthanum Sulphide glass
María Ramos Vázquez, Belén Sotillo, Stefano Rampini +6
We report on femtosecond laser writing of single mode optical waveguides in chalcogenide Gallium Lanthanum Sulphide (GLS) glass. A multiscan fabrication process was employed to cre…
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…
Femtosecond laser inscription of Bragg grating waveguides in bulk diamond
V. Bharadwaj, A. Courvoisier, T. T. Fernandez +7
Femtosecond laser writing is applied to form Bragg grating waveguides in the diamond bulk. Type II waveguides are integrated with a single pulse point-by-point periodic laser modif…
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…
Optical realization of the dissipative quantum oscillator
Stefano Longhi, Shane M. Eaton
An optical realization of the damped quantum oscillator, based on transverse light dynamics in an optical resonator with slowly-moving mirrors, is theoretically suggested. The opti…