Dr Castelletto is a Senior Lecturer in the
Her present major focus of research is studying/engineering deep defects in wide-band gap semiconductors (bulk, nanostructures and devices) for quantum technologies, magnetic field, temperature and strain sensors at the micro/nanoscale. She is involved in the application of biocompatible materials such as nanodiamonds and silicon carbide in biomedical imaging using magnetic resonance imaging and optical super-resolution microscopy. Finally her interest is also in solar energy harvesting, photo-catalysis and photovoltaic.
Dr Castelletto is an Adjunct Associate Professor for research collaboration in the Faculty of Science, Engineering and Technology at Swinburne University of Technology in Hawthorn.
Part of the Scientific Committee of SPIE annual conference on Quantum Communication and Imaging since 2004. Co-editor of the Proceedings of the Single-Photon Workshop (SPW2005: Sources, Detectors, Applications and Measurement Methods).Scientific Committee of the Single Photon Workshop 2007. Assessor for the Italian Ministry of Education and Research (MIUR) projects and ARC.
Referee for scientific journals including Applied Optics, Journal of the Optical Society of America B, New Journal of Physics, Optics Express, Optics Communication, Journal of Modern Optics, IEEE Transaction Of Instrumentation & Measurements, IEEE Journal of Selected Topics in Quantum Electronics, ACS Nano, Metrologia, Physical Review B, A, Letters, Optics letters, Journal of Materials Chemistry, Review Scientific Instruments, Nature Materials, Nature Communications.
92 Scopus outputs and h index=20 (Google Scholar). Co-authored a total of 140 papers, 65 peers reviewed journal papers, 76 conference papers. Over 80 conference presentations, 52 of these oral and 15 invited.
- Extensive experimental experience in optical measurements with laser, optical characterisation of material, laser and matter interaction process and analysis, nonlinear optics.
- Extensive experimental experience in optical imaging methods such as confocal and wide-field microscopy, super-resolution microscopy.
- Experience in nanoparticles measurements and characterization and related diagnostic techniques based on Scanning Electron Microscopy, Transmission Electron Microscopy, Dynamic Light Scattering, Atomic Force Microscope.
- Experience in diamond synthesis (CVD) and diamond characterisation and processing methods.
Most significant contribution to research
In Australia she led cutting edge research in the field of quantum and nano-photonics with a recent discovered and engineered functionality in silicon carbide, a single photon emitter at room temperature (Nature Materials, commented in two News and Views in Nature Photonics and Nature Physics). This fundamental work paves the way for many applications on the use of single defects for LED and for ultra-presise sensors (MEMS and nano-structures-based) in this material, enabling future advanced technologies.
Castelletto led to the discovery of a novel defect in diamond based on chromium impurities and established new imaging methods, which gave rise to a series of very high impact papers. In collaboration with the Florey Institute of Neuroscience and the Melbourne Neuroscience Institute & Centre for Neuroscience Research at the University of Melbourne, she first used nanodiamonds with silicon vacancy defects for imaging neural stems cell.
She introduced the use of NV centres in diamond for super-resolution imaging based on time-slicing to resolve multiple nitrogen vacancy (NV) centres in the same nanodiamonds, with record resolution of 20 nm.
In Italy she established new laboratories for novel experimental, theoretical and computational investigations of non-classical states of light, particularly entangled photons for application in quantum metrology, quantum imaging and quantum cryptography and an International network in photon metrology.
She considerably achieved in the field of optical metrology, such as radiometry and time and frequency metrology. She pioneered the field of quantum radiometry in Europe with original and innovative research in experimental quantum metrology. She contributed originally to pioneering work in quantum optics and its application to metrology, to quantum imaging and quantum communications.
She also worked within the field of theoretical quantum and classical optics for application in quantum communications as well as modelling of solar cells and in nanophotonics.
Listed below are Dr Castelletto's 10 most recent publications. For a full list see Dr Stefania Castelletto's Google Scholar listing.
- University of Western Australia Research Collaboration Awards (2015), “Schistosoma magneto optical-microwave sensors” 2015
- Research collaboration award (RCA) with the University of Western Australia, “Next generation hybrid sapphire-diamond spin-frequency transducers: towards all diamond frequency resonators“ 2012-13
- Macquarie Research Development grant, ``Luminescent nanomaterials for molecular-specific cell and tissue imaging“ 2012-14
- Australian Academy of Science travel grant to Germany for 2 weeks,2011
- University of Melbourne (UoM) Interdisciplinary Seed Funding. "Magnetic resonance and optical imaging to study the dynamics of neural stem cell responses in situ using nanodiamonds",2010
- UoM Interdisciplinary Seed Funding. "Magnetic resonance and optical imaging to study the dynamics of neural stem cell responses in situ using nanodiamonds", 2011
- UoM Interdisciplinary Seed Funding - 2011. "Novel Hybrid Diamond-Metal Oxides for Advanced Electro-Optic Applications" (PI) (50,000 AUD) 2011
- QCrypt, Italian Ministry of Research and defence company Elsag now Selex SI 2001-03
- European Project "Harrison" European Space agency 2006-07
- Laser Safety Officer level 1 (2013)
- Essentials in Tertiary education RMIT (2013)
- PhD in Metrology, Department of Electronic Engineering of the Polytechnic of Turin 1998, Mention Excellent
- MSc (Physics), 1992, University of Turin, 110/110 cum Laude
- Part of the Scientific Committee of SPIE annual conference on Quantum Communication and Imaging since 2004. Co-editor of the Proceedings of the Single-Photon Workshop (SPW2005: Sources, Detectors, Applications and Measurement Methods).Scientific
- Committee of the Single Photon Workshop 2007. Assessor for the Italian Ministry of Education and Research (MIUR) projects and ARC.
- Sep 2011-June 2013 Senior Research Fellow in Dept. of Physics and Astronomy in Macquarie University and part of the ARC Centre of Excellence Engineered Quantum systems (EQuS).
- Jan–August 2011 Senior Research Fellow at the Centre for Micro-Photonics Faculty of Engineering and Industrial Science under the supervision of the Centre Director Prof. Gu
- 2006-2010: Senior Research Fellow and Research Fellow at University of Melbourne, Physics/Optics and Micro-analytical Materials groups.
- 2002-2006: Research Group Leader in Optical Metrology at the Italian National Metrology (NMI) Institute, INRIM
- 1998–2001: Tenured researcher and responsible for photon calibration at Italian NMI. Research in radiometry, photometry, nonlinear optics optical quantum entanglement, quantum imaging and quantum cryptography.
- Awarded by the Australian Academy of Science scientific trip to Humboldt Berlin University Institute of Quantum Nanophotonics
- Max Planck Institute, Biophysical chemistry department of NanoBioPhotonics in Prof Stefan Hell’s group
- University of Stuttgart within European Project collaboration Engineered quantum information with Nanostructured diamond (EQUIND)
- 2001-2003, Invited Guest Scientist, sponsored by National Institute of Standards and Technology USA
- Invited Guest Researcher, sponsored by National Physics Laboratory (UK)
Industry and government agency collaborations
- Qcrypt Selex SI, Italy,
- Element Six (UK), European Project EQUIND FP7 FET open,
- Euranet: Physikalisch-Technische Bundesanstalt (Ge), Institut national de métrologie (INM) – Cnam (F), National Physics Lab (UK), Italian Institute of Metrological Research (INRIM), National Institute of Technology (USA)
- Swinburne University of Technology
- The University of Western Australia
- The University of Melbourne
- Radiation Effect group, Japanese Atomic Energy Agency
- University of Tsukuba, Japan
- Cambridge University (UK)
- Institute for Solid State Physics and Optics, Wigner Research Center for Physics, Hungarian Academy of Sciences
Past collaborations have included: University of Stuttgart (Ge), University of ENS-Cachan (Fr), University of Insubria (I), CNR (Italy), Instituto dei Sistemi Complessi (I), The University of Boston.
- Lohrmann, A.,Johnson, B.,McCallum, J.,Castelletto, S. (2017). A review on single photon sources in silicon carbide In: Reports on Progress in Physics, 80, 1 - 23
- Lohrmann, A.,Karle, T.,Sewani, V.,Laucht, A.,Bosi, M.,Negri, M.,Castelletto, S.,Prawer, S.,McCallum, J.,Johnson, B. (2017). Integration of single-photon emitters into 3C-SiC microdisk resonators In: ACS Photonics, 4, 462 - 468
- Castelletto, S.,Almutairi, A.,Thalassinos, G.,Lohrmann, A.,Buividas, R.,Lau, D.,Reineck, P.,Juodkazis, S.,Ohshima, T.,Gibson, B.,Johnson, B. (2017). Fluorescent color centers in laser ablated 4H-SiC nanoparticles In: Optics Letters, 42, 1297 - 1300
- Barbiero, M.,Castelletto, S.,Gan, X.,Gu, M. (2017). (In Press) Spin manipulated nanoscopy for single nitrogen-vacancy center localizations in nanodiamonds In: Light: Science and Applications, , 1 - 22
- Ohshima, T.,Honda, T.,Onoda, S.,Makino, T.,Haruyama, M.,Kamiya, T.,Satoh, T.,Hijikata, Y.,Kada, W.,Hanaizumi, O.,Lohrmann, A.,Klein, J.,Johnson, B.,McCallum, J.,Castelletto, S.,Gibson, B.,Kraus, H.,Dyakonov, V.,Astakhov, G. (2017). Creation and functionalization of defects in SiC by proton beam writing In: Materials Science Forum, 897, 233 - 237
- Lohrmann, A.,Castelletto, S.,Klein, J.,Ohshima, T.,Bosi, M.,Negri, M.,Lau, D.,Gibson, B.,Prawer, S.,McCallum, J.,Johnson, B. (2016). Activation and control of visible single defects in 4H-, 6H-, and 3C-SiC by oxidation In: Applied Physics Letters, 108, 1 - 5
- Le Floch, J.,Delhote, N.,Aubourg, M.,Madrangeas, V.,Cros, D.,Castelletto, S.,Tobar, M. (2016). Towards achieving strong coupling in three-dimensional-cavity with solid state spin resonance In: Journal of Applied Physics, 119, 1 - 8
- Boretti, A.,Castelletto, S. (2016). Nanometric resolution magnetic resonance imaging methods for mapping functional activity in neuronal networks In: MethodsX, 3, 297 - 306
- Lohrmann, A.,Johnson, B.,Almutairi, A.,Lau, D.,Negri, M.,Bosi, M.,Gibson, B.,McCallum, J.,Gali, A.,Ohshima, T.,Castelletto, S. (2016). Engineering single defects in silicon carbide bulk, nanostructures and devices In: Materials Science Forum, 858, 312 - 317
- Castelletto, S.,Rosa, L.,Johnson, B. (2015). Silicon carbide for novel quantum technology devices In: Advanced Silicon Carbide Devices and Processing, InTech Open Access Publisher, Rijeka, Croatia
2 PhD Current Supervisions