Publications

Guo, Y., Coccia, G., Bharadwaj, V., Yoshizaki, R., Eggleton, K.M., Hadden, J.P., Eaton, S.M. and Bennett, A.J., 2025. Femtosecond laser-written nano-ablations containing bright antibunched emitters on gallium nitride. arXiv preprint arXiv:2505.09774.

Shahbazi, S., Coccia, G., Giakoumaki, A.N., Lang, J., Bharadwaj, V., Jelezko, F., Ramponi, R., Bennett, A.J., Hadden, J.P., Eaton, S.M. and Kubanek, A., 2025. Vector magnetometry using shallow implanted NV centers in diamond with waveguide-assisted dipole excitation and readout. APL Photonics, 10(2).

Koch, Michael K., Vibhav Bharadwaj, and Alexander Kubanek. "Probing the limits for coherent optical control of a mechanically decoupled defect center in hexagonal boron nitride." Communications Materials 5.1 (2024): 240.

Kotsedi, L., Abdelmalek, A., Bharadwaj, V., Mtshali, C.B., Nuru, Z.Y., Sotillo, B., Coccia, G., Eaton, S.M., Ramponi, R., Amara, E.H. and Maaza, M., 2024. Optical and microstructural studies of femtosecond laser treated amorphous germanium thin coatings. Optical Materials, p.116290.

Shahbazi, Sajedeh, Giulio Coccia, Johannes Lang, Vibhav Bharadwaj, Fedor Jelezko, Roberta Ramponi, Anthony J. Bennett, John P. Hadden, Shane M. Eaton, and Alexander Kubanek. "Vector Magnetometry Using Shallow Implanted NV Centers in Diamond with Waveguide-Assisted Dipole Excitation and Readout." arXiv preprint arXiv:2407.18711 (2024).

Alam, M.S., Gorrini, F., Gawełczyk, M., Wigger, D., Coccia, G., Guo, Y., Shahbazi, S., Bharadwaj, V., Kubanek, A., Ramponi, R. and Barclay, P.E., 2024. Determining Strain Components in a Diamond Waveguide from Zero-Field ODMR Spectra of NV- Center Ensembles. Phys. Rev. Applied 22, 024055 (2024).

Guo, Y., Hadden, J.P., Gorrini, F., Coccia, G., Bharadwaj, V., Kavatamane, V.K., Alam, M.S., Ramponi, R., Barclay, P.E., Chiappini, A. and Ferrari, M., 2024. Laser-written waveguide-integrated coherent spins in diamond. APL Photonics 9, 076103 (2024)

Koch, M. K., Bharadwaj, V. & Kubanek, A. (2023). Limits for coherent optical control of quantum emitters in layered materials. arXiv:2312.11090.

Koch, M. K., Hoese, M., Bharadwaj, V., Lang, J., Hadden, J. P., Ramponi, R., ... & Kubanek, A. (2022). Super-poissonian light statistics from individual silicon vacancy centers coupled to a laser-written diamond waveguide. ACS photonics, 9(10), 3366-3373.

Giakoumaki, A. N., Coccia, G., Bharadwaj, V., Hadden, J. P., Bennett, A. J., Sotillo, B., ... & Eaton, S. M. (2022). Quantum technologies in diamond enabled by laser processing. Applied Physics Letters, 120(2).

Ramos, M., Bharadwaj, V., Sotillo, B., Gholipour, B., Giakoumaki, A. N., Ramponi, R., ... & Soci, C. (2021). Photonic implementation of artificial synapses in ultrafast laser inscribed waveguides in chalcogenide glass. Applied Physics Letters, 119(3).

Hoese, M., Koch, M. K., Bharadwaj, V., Lang, J., Hadden, J. P., Yoshizaki, R., ... & Kubanek, A. (2021). Integrated magnetometry platform with stackable waveguide-assisted detection channels for sensing arrays. Physical Review Applied, 15(5), 054059.

Abdelmalek, A., Giakoumaki, A. N., Bharadwaj, V., Sotillo, B., Le Phu, T., Bollani, M., ... & Maaza, M. (2021). Morphological study of nanostructures induced by direct femtosecond laser ablation on diamond. Micromachines, 12(5), 583.

Yavuz, N., Bayer, M.M., Ҫirkinoğlu, H.O., Serpengüzel, A., Le Phu, T., Giakoumaki, A., Bharadwaj, V., Ramponi, R. and Eaton, S.M., 2020. Laser-inscribed diamond waveguide resonantly coupled to diamond microsphere. Molecules, 25(11), p.2698.

Abdelmalek, A., Bedrane, Z., Bharadwaj, V., Amara, E. H., Ramponi, R., & Eaton, S. M. (2019). Generalized Plasmonic Modelling of the Effect of Refractive Index on Laser-Induced Periodic Nanostructures. Journal of Materials and Applications, 8(2), 73-79.

Kotsedi, L., Furlan, V., Bharadwaj, V., Kaviyarasu, K., Sotillo, B., Mtshali, C. B., ... & Maaza, M. (2019). Chromium oxide formation on nanosecond and femtosecond laser irradiated thin chromium films. Optical Materials, 95, 109206

Eaton, S. M., Hadden, J. P., Bharadwaj, V., Forneris, J., Picollo, F., Bosia, F., ... & Ramponi, R. (2019). Quantum micro–nano devices fabricated in diamond by femtosecond laser and ion irradiation. Advanced Quantum Technologies, 2(5-6), 1900006.

Çirkinoğlu, H. O., Bayer, M. M., Serpengüzel, A., Rampini, S., Sotillo, B., Bharadwaj, V., ... & Eaton, S. M. (2019). Femtosecond laser written diamond waveguide excitation of the whispering gallery modes in a silicon microsphere. Optical Materials, 92, 418-424.

Minzioni, P., Lacava, C., Tanabe, T., Dong, J., Hu, X., Csaba, G., ... & Nunn, J. (2019). Roadmap on all-optical processing. Journal of Optics, 21(6), 063001.

Bharadwaj, V., Jedrkiewicz, O., Hadden, J. P., Sotillo, B., Vázquez, M. R., Dentella, P., ... & Eaton, S. M. (2019). Femtosecond laser written photonic and microfluidic circuits in diamond. Journal of Physics: Photonics, 1(2), 022001.

Italia, V., Giakoumaki, A. N., Bonfadini, S., Bharadwaj, V., Le Phu, T., Eaton, S. M., ... & Criante, L. (2018). Laser-inscribed glass microfluidic device for non-mixing flow of miscible solvents. Micromachines, 10(1), 23.

Vázquez, M. R., Sotillo, B., Rampini, S., Bharadwaj, V., Gholipour, B., Fernández, P., ... & Eaton, S. M. (2018). Femtosecond laser inscription of nonlinear photonic circuits in Gallium Lanthanum Sulphide glass. Journal of Physics: Photonics, 1(1), 015006.

Bharadwaj, V., Wang, Y., Fernandez, T. T., Ramponi, R., Eaton, S. M., & Galzerano, G. (2018). Femtosecond laser written diamond waveguides: A step towards integrated photonics in the far infrared. Optical Materials, 85, 183-185.

Abdelmalek, A., Bedrane, Z., Amara, E. H., Sotillo, B., Bharadwaj, V., Ramponi, R., & Eaton, S. M. (2018). Ablation of copper metal films by femtosecond laser multipulse irradiation. Applied Sciences, 8(10), 1826.

Hadden, J. P., Bharadwaj, V., Sotillo, B., Rampini, S., Osellame, R., Witmer, J. D., ... & Eaton, S. M. (2018). Integrated waveguides and deterministically positioned nitrogen vacancy centers in diamond created by femtosecond laser writing. Optics letters, 43(15), 3586-3589.

Çirkinoğlu, H. O., Bayer, M. M., Gökay, U. S., Serpengüzel, A., Sotillo, B., Bharadwaj, V., ... & Eaton, S. M. (2018). Silicon microsphere whispering gallery modes excited by femtosecond-laser-inscribed glass waveguides. Applied Optics, 57(14), 3687-3692.

Vázquez, M. R., Bharadwaj, V., Sotillo, B., Lo, S. Z. A., Ramponi, R., Zheludev, N. I., ... & Soci, C. (2018). Optical NP problem solver on laser-written waveguide platform. Optics Express, 26(2), 702-710.

Sotillo, B., Chiappini, A., Bharadwaj, V., Hadden, J. P., Bosia, F., Olivero, P., ... & Eaton, S. M. (2018). Polarized micro-Raman studies of femtosecond laser written stress-induced optical waveguides in diamond. Applied Physics Letters, 112(3).

Sotillo, B., Chiappini, A., Bharadwaj, V., Ramos, M., Fernandez, T. T., Rampini, S., ... & Eaton, S. M. (2017). Raman spectroscopy of femtosecond laser written low propagation loss optical waveguides in Schott N-SF8 glass. Optical Materials, 72, 626-631.

Abdelmalek, A., Sotillo, B. E. L. E. N., Bedrane, Z., Bharadwaj, V., Pietralunga, S., Ramponi, R., ... & Eaton, S. M. (2017). Origin of femtosecond laser induced periodic nanostructure on diamond. AIP Advances, 7(10).

Bharadwaj, V., Courvoisier, A., Fernandez, T. T., Ramponi, R., Galzerano, G., Nunn, J., ... & Salter, P. S. (2017). Femtosecond laser inscription of Bragg grating waveguides in bulk diamond. Optics letters, 42(17), 3451-3453.

Sotillo, B., Bharadwaj, V., Hadden, J. P., Rampini, S., Chiappini, A., Fernandez, T. T., ... & Eaton, S. M. (2017). Visible to infrared diamond photonics enabled by focused femtosecond laser pulses. Micromachines, 8(2), 60.

Sotillo, B., Bharadwaj, V., Hadden, J. P., Sakakura, M., Chiappini, A., Fernandez, T. T., ... & Eaton, S. M. (2016). Diamond photonics platform enabled by femtosecond laser writing. Scientific reports, 6(1), 35566.

Sakakura, M., Okada, T., Bharadwaj, V., Sotillo, B., Eaton, S. M., Ramponi, R., ... & Miura, K. (2016). Modification and dynamics inside diamond by femtosecond laser double-pulse irradiation.