Dr J.P. Hadden
Lecturer
- haddenj@cardiff.ac.uk
- Room C/3.07, Adeiladau'r Frenhines-Adeilad Canolog, 5 The Parade, Ffordd Casnewydd, Caerdydd, CF24 3AA
- Ar gael fel goruchwyliwr ôl-raddedig
Trosolwg
I am a lecturer at the School of Engineering at Cardiff University. My research focusses on nano-photonics, quantum optics, and quantum sensing technologies based on single photon emitting colour centres in wide bandgap semiconductor materials such as gallium nitride, diamond and 2D materials.
More information can be found on the group webpage.
Bywgraffiad
Following completion of a MSci in Mathematics and Physics at the University of Bristol, I joined the Centre for Quantum Photonics with Profs Jeremy O'Brien and John Rarity, completing a PhD on "Photonic Structures and Techniques for Enhanced Measurement of Spin Qubits in Diamond". Subsequently I became an Eyes High Postdoctoral Fellow in Prof. Paul Barclay's group at the Institute for Quantum Science and Technology at the University of Calgary. I joined Cardiff University in 2018, working with Prof. Anthony Bennett and Prof. Diana Huffaker and gaining a Welsh Government funded Sêr Cymru cofund postdoctoral fellowship to support my work on quantum emitters in widebandgap semiconductors.
More information can be found on the group webpage.
Anrhydeddau a Dyfarniadau
- 2021-Present Generation Tech (CoI) - Outreach Catalyst Funding - Innovation for All, Research Wales Innovation Funding (RWIF) from the Higher Education Funding Council for Wales (HEFCW).
- 2019-Present Horizon 2020 Marie Sklodowska-Curie Actions Innovative Training Network - 'Training on Laser Fabrication and Ion Implantation of defects as quantum emitters' - (Co-Author and Named Researcher). www.lasiondef.eu (LasIonDef).
- 2019-2022 Sêr Cymru Cofund Postdoctoral Fellowship - 'NIQuED' - Nitride Integrated Quantum Emitter Devices - PI (2019).
- 2019-2020 (CoI) EPSRC ECR Institutional Equipment - 'Micro-Raman characterisation system to non-destructively determine the elemental composition of novel materials'.
- 2019-2020 (PI) Horizon 2020 Marie Sklodowska-Curie Actions Seal of Excellence.
Aelodaethau proffesiynol
- 2015-Present - Institute of Physics.
- 2021 - Optics group committee - Ordinary member.
- 2020-2021 - Optical Society of America (Optica)
Safleoedd academaidd blaenorol
- 2018 - 2022 Postdoctoral Research Associate/Sêr Cymru Cofund Postdoctoral Fellow, School of Physics and Astronomy, Cardiff University.
- 2015 - 2018 Eyes High Postdoctoral Fellow, Institute for Quantum Science and Technology, University of Calgary.
- 2013 - 2014 Posdoctoral Assistant, Centre for Quantum Photonics, School of Physics, University of Bristol.
- 2008 - 2013 PhD Student, Centre for Quantum Photonics, School of Physics, University of Bristol.
Ymrwymiadau siarad cyhoeddus
- J.P. Hadden, G. Gough, D.M. Beggs, A.J. Bennett, Angled Faraday cage etching of freestanding triangular nanobeams in gallium nitride, NOEKS, Munich, September 2020. (Contributed Poster)
- J.P. Hadden, G. Gough, D.M. Beggs, A.J. Bennett, Angled Faraday cage etching of freestanding triangular nanobeams in gallium nitride, Photon2020, Nottingham, September 2020, (Contributed Talk)
- J.P. Hadden, S. Bishop, G. Gough, D.M. Beggs, A.J. Bennett, D.L. Huffaker. Towards Nitride Integrated Quantum Emitter Devices, Sêr Cymru Celebration Workshop 2019, Mercure Hotel, Cardiff, September 2019. (Poster, + selected as ‘lightning talk’).
- J. P. Hadden, V. Bharadwaj, B. Sotillo, S. Rampini, R. Osellame, J. Witmer, H. Jayakumar, T. T. Fernandez, A. Chiappini, C. Armellini, M. Ferrari, R. Ramponi, P. E. Barclay, S. M. Eaton, Creation of high density nitrogen vacancy ensembles within femtosecond laser written waveguides for fully integrated sensing devices, Photonics Seminar Series 2018, Bristol, UK, December 2018, (Invited Seminar Talk)
- J. P. Hadden, V. Bharadwaj, B. Sotillo, S. Rampini, R. Osellame, J. Witmer, H. Jayakumar, T. T. Fernandez, A. Chiappini, C. Armellini, M. Ferrari, R. Ramponi, P. E. Barclay, S. M. Eaton, Creation of high density nitrogen vacancy ensembles within femtosecond laser written waveguides for fully integrated sensing devices, PHAS Symposium 2018, Calgary, Canada, February 2018, (Contributed Talk)
Pwyllgorau ac adolygu
Reviewing
- Reviewer for journals Nature Communications, Scientific Reports, Laser and Photonics Reviews, PRL, PRA, PRB and APL, and for funding agency EPSRC.
Committees
- 2021-Current IOP Optics group committee - Ordinary member.
- 2018-Current Organiser of Photonics and Compound Semiconductors Journal Club.
- 2019-2022 Member of Environment Comittee - School of Physics and Astronomy, Cardiff University.
Outreach
- Generation Tech - Development of a schools workshop to introduce aspects of compound semiconductor technology and apply them solve real world problems. CoI, scientific advisor and volunteer.
- STEM Ambassadors Program - Volunteer at Cardiff science festival events such as ‘The Museum After Dark’, Science Busking, online outreach such as ‘I’m a scientist STAY AT HOME’ and Brightside online STEM ambassadors mentoring.
Cyhoeddiadau
2022
- Bishop, S. G., Cannon, J. K., Yağcı, H. B., Clark, R. N., Hadden, J. P., Langbein, W. and Bennett, A. J. 2022. Evanescent-field assisted photon collection from quantum emitters under a solid immersion lens. New Journal of Physics 24, article number: 103027. (10.1088/1367-2630/ac9697)
- Hadden, J. P., Maynard, C., Beggs, D. M., Taylor, R. A. and Bennett, A. J. 2022. Design of free-space couplers for suspended triangular nano-beam waveguides. Journal of Physics D: Applied Physics 55(47), article number: 474002. (10.1088/1361-6463/ac941e)
- Koch, M. K. et al. 2022. Super-poissonian light statistics from individual silicon vacancy centers coupled to a laser-written diamond waveguide. ACS Photonics 9(10), pp. 3366-3373. (10.1021/acsphotonics.2c00774)
- Bishop, S. G., Hadden, J. P., Hekmati, R., Cannon, J. K., Langbein, W. W. and Bennett, A. J. 2022. Enhanced light collection from a gallium nitride color center using a near index-matched solid immersion lens. Applied Physics Letters 120, article number: 114001. (10.1063/5.0085257)
- Giakoumaki, A. N. et al. 2022. Quantum technologies in diamond enabled by laser processing. Applied Physics Letters 120(2), article number: 20502. (10.1063/5.0080348)
2021
- Koch, M. K. et al. 2021. On-chip single-photon subtraction by individual silicon vacancy centers in a laser-written diamond waveguide. [Online]. Cornell University. Available at: https://arxiv.org/abs/2111.01699
- Hoese, M. et al. 2021. Integrated magnetometry platform with stackable waveguide-assisted detection channels for sensing arrays. Physical Review Applied 15(5), article number: 54059. (10.1103/PhysRevApplied.15.054059)
2020
- Bishop, S., Hadden, J., Alzahrani, F., Hekmati, R., Huffaker, D., Langbein, W. and Bennett, A. 2020. Room-temperature quantum emitter in aluminum nitride. ACS Photonics 7(7), pp. 1636-1641. (10.1021/acsphotonics.0c00528)
- Knauer, S., Hadden, J. P. and Rarity, J. G. 2020. In-situ measurements of fabrication induced strain in diamond photonic-structures using intrinsic colour centres. npj Quantum Information 6(1), article number: 50. (10.1038/s41534-020-0277-1)
2019
- Eaton, S. M. et al. 2019. Quantum micro–nano devices fabricated in diamond by femtosecond laser and ion irradiation. Advanced Quantum Technologies 2(5-6), article number: 1900006. (10.1002/qute.201900006)
- Bharadwaj, V. et al. 2019. Femtosecond laser written photonic and microfluidic circuits in diamond. Journal of Physics: Photonics 1(2), article number: 22001. (10.1088/2515-7647/ab0c4e)
2018
- Ortiz-Huerta, F., Chen, L., Taverne, M., Hadden, J., Johnson, M., Ho, Y. L. D. and Rarity, J. G. 2018. Fabrication of hybrid Fabry-Pérot microcavity using two-photon lithography for single-photon sources. Optics Express 26(25), pp. 33245. (10.1364/OE.26.033245)
- Hadden, J. P. et al. 2018. Integrated waveguides and deterministically positioned nitrogen vacancy centers in diamond created by femtosecond laser writing. Optics Letters 43(15), pp. 3586-3589. (10.1364/OL.43.003586)
- Sotillo, B. et al. 2018. Polarized micro-Raman studies of femtosecond laser written stress-induced optical waveguides in diamond. Applied Physics Letters 112(3), article number: 31109. (10.1063/1.5017108)
2017
- Lake, D. P., Mitchell, M., Hadden, J. P. and Barclay, P. E. 2017. Optomechanically induced transparency in diamond microdisks. Presented at: 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 25-29 June 20172017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). IEEE, (10.1109/CLEOE-EQEC.2017.8087082)
- Sotillo, B. et al. 2017. Femtosecond laser processing for single NV-waveguide integration in diamond. Presented at: 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Munich, Germany, 25-29 June 20172017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC. IEEE, (10.1109/CLEOE-EQEC.2017.8087836)
- Hadden, J. et al. 2017. Bulk diamond optical waveguides fabricated by focused femtosecond laser pulses. Presented at: SPIE LASE, 2017, San Francisco, CAL, 2018Laser 3D Manufacturing IV, Vol. 10095. SPIE Proceedings Bellingham, WA: Society of Photo-Optical Instrumentation Engineers (SPIE), (10.1117/12.2258062)
- Sotillo, B. et al. 2017. Visible to infrared diamond photonics enabled by focused femtosecond laser pulses. Micromachines 8(2), article number: 60. (10.3390/mi8020060)
- Masuda, T. et al. 2017. High-Q diamond microdisks for coupling to SiV quantum emitters. Presented at: CLEO: Applications and Technology 2017, San Jose, CAL, 14–19 May 2017CLEO: Applications and Technology 2017. Washington, D.C.: OSA Publishing, (10.1364/CLEO_AT.2017.JTh3E.2)
2016
- Sotillo, B. et al. 2016. Diamond photonics platform enabled by femtosecond laser writing. Scientific Reports- Faculty of Agriculture Okayama University 6, article number: 35566. (10.1038/srep35566)
- Mitchell, M., Khanaliloo, B., Lake, D. P., Masuda, T., Hadden, J. P. and Barclay, P. E. 2016. Single-crystal diamond low-dissipation cavity optomechanics. Optica 3(9), pp. 963-970.
- Eaton, S. M. et al. 2016. Femtosecond laser written photonic circuits in diamond for quantum information. Presented at: 2016 18th International Conference on Transparent Optical Networks (ICTON), Trento, 10-14 July 201618th International Conference on Transparent Optical Networks (ICTON). IEEE, (10.1109/ICTON.2016.7550522)
- Mitchell, M., Khanaliloo, B., Lake, D. P., Masuda, T., Hadden, J. P. and Barclay, P. 2016. Diamond microdisk cavity optomechanics. Presented at: CLEO: Science and Innovations 2016 Conference on Lasers and Electro-Optics, San Jose, California, 5–10 June 2016OSA Technical Digest (2016) (Optical Society of America, 2016). Optical Society of America pp. STu4E.3., (10.1364/CLEO_SI.2016.STu4E.3)
- Khanaliloo, B. et al. 2016. High-quality single-crystal diamond nanophotonic and nanomechanical resonators. SPIE Newsroom (10.1117/2.1201601.006303)
2013
- Kennard, J. E. et al. 2013. On-chip manipulation of single photons from a diamond defect. Physical Review Letters 111(21), article number: 213603. (10.1103/PhysRevLett.111.213603)
2012
- Wildanger, D. et al. 2012. Solid immersion facilitates fluorescence microscopy with nanometer resolution and sub-ångström emitter localization. Advanced Materials 24(44), pp. OP309-OP313. (10.1002/adma.201203033)
2011
- Marseglia, L. et al. 2011. Nanofabricated solid immersion lenses registered to single emitters in diamond. Applied Physics Letters 98(13), article number: 133107. (10.1063/1.3573870)
- Castelletto, S. et al. 2011. Diamond-based structures to collect and guide light. New Journal of Physics 13(2), article number: 25020. (10.1088/1367-2630/13/2/025020)
2010
- Hadden, J. P. et al. 2010. Strongly enhanced photon collection from diamond defect centers under microfabricated integrated solid immersion lenses. Applied Physics Letters 97(24), article number: 241901. (10.1063/1.3519847)
- Bonneau, D. et al. 2010. Integrated quantum photonics. Presented at: 23rd Annual Meeting of the IEEE Photonics Society, Denver, Colerado, 7-11 November 20102010 23rd Annual Meeting of the IEEE Photonics Society. IEEE pp. 542., (10.1109/PHOTONICS.2010.5699001)
- Marseglia, L. et al. 2010. Photonic crystal defect cavities coupled to N-V centres in diamond. Presented at: 36th European Conference and Exhibition on Optical Communication, Torino, 19-23 September 2010Proceedings of 36th European Conference and Exhibition on Optical Communication. IEEE, (10.1109/ECOC.2010.5621252)
My current research interests are in the investigation and development of single photon emitting colour centres for communication and sensing applications in wide band-gap compound semiconductors with mature growth and processing capabilities such as gallium nitride.
My previous work has focussed on the development of colour centres in diamond as photonic quantum technology resources such as single photon quantum emitters and solid state qubits for quantum information. This involved the coupling of Nitrogen Vacancy (NV) or Silicon Vacancy (SiV) colour centres to photonic structures such as focussed ion beam (FIB) milled solid immersion lenses to improve photon collection efficiency (APL, 97, 24, 241901, 2010), whispering gallery mode microdisk resonators for cavity optomechanics (Optica, 3, 9, 963. 2016), and femtosecond laser written waveguides to guide and collect emitted light (Optics Letters, 43, 15, 3586 2018).
More information can be found on the group webpage.