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< Back Xiangyu Lin Research Assistant Curriculum Vitae Publications Summer 2025: Research assistant in Nano-spectroscopy group, Department of Physics, Sapienza University of Rome, Italy. 2020-2023: Master of Science (MSc) in Physics at Niels Bohr Institute, University of Copenhagen, Denmark 2014-2019: Bachelor of Science (BSc) in Physics at Collage of Arts and Science and Bachelor of Engineering (B.E.) in Electrical Engineering at Collage of Engineering, University of Missouri - Columbia, United States Back to Top Office:

< Back Akant Sagar Sharma Post-Doc Researcher Curriculum Vitae Publications since 2023 Postdoctoral Researcher in Nano-spectroscopy group, Department of Physics, Sapienza University of Rome, Italy. Supervisor: Prof. Marta De Luca. Currently working on the project “ Advanced optical spectroscopy of site-controlled single photon sources in single III-V nanowires” within the ERC Starting grant “NANOWHYR ”. 2021-2023 Postdoctoral Researcher in the Ultrafast Spectroscopy Group, School of Physics, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala, India. Supervisor: Prof. Rajeev N. Kini. I worked in the field of temperature-dependent ultrafast hot carrier dynamics of III-V-Bismide semiconductors using pump-probe spectroscopy. Also studied the temperature-dependent electrical transport properties of III-V-bismide semiconductors. 2014-2021 (Due to COVID-19 the time taken from thesis submission to final defence is almost 2 years.) Ph.D. in Technology. Subject: Nanoscience and Nanotechnology, CRNN, University of Calcutta, Kolkata, West Bengal, India. Supervisor: Prof. Sunanda Dhar. Thesis Title: “ Interfacial Strain and Related Effect in III-V Nitride and Bismide Semiconductor Heterojunctions and Nanostructures ”. 2012-2014 Master of Science in Electronic Science, Calcutta University, Kolkata, West Bengal, India. 2009-2012 Bachelor of Science in Electronics, Vidyasagar College, University of Calcutta, Kolkata, West Bengal, India. Back to Top Sapienza University of Rome, Physics Department akantsagar.sharma@uniroma1.it Office: n° 349, third floor, Marconi building, Physics Department

< Back Francesca Santangeli PhD Student Curriculum Vitae Publications since 2022 PhD student in the Nanospectroscopy group at the Physics department of the Sapienza University of Rome, Italy. Currently working on tuning the optoelectronic and vibrational properties of InN nanowires. 2019-2022 Master of Science (MSc) in Organic Chemistry at Sapienza University, Rome 2016-2019 Bachelor of Science (BSc) in Chemistry at Sapienza University, Rome Back to Top Sapienza University of Rome, Physics Department francesca.santangeli@uniroma1.it Office: n° 349, third floor, Marconi building, Physics Department

< Back Paolo De Vincenzi PhD Student Curriculum Vitae Publications since 2023 PhD student in the Nanospectroscopy group at the Physics department of the Sapienza University of Rome, Italy. Currently working on creating QDs in GaAsN, GaAsP and InAsP NWs and tune their emission. 2021-2023 Master of Science (MSc) in Condensed Matter Physics at Sapienza University, Rome 2017-2021 Bachelor of Science (BSc) in Physics at Sapienza University, Rome Back to Top Sapienza University of Rome, Physics Department paolo.devincenzi@uniroma1.it Office: n° 312, third floor, Marconi building, Physics Department

< Back Pietro Todesco Master Student Curriculum Vitae Publications 2022-2024 Master of Science (MSc) in Condensed Matter Physics at Sapienza University, Rome. Completed his master’s thesis in the Nanospectroscopy Group at the Physics Department of the Sapienza University, focusing on bandgap engineering of InN nanowires. 2019-2022 Bachelor of Science (BSc) in Physics at Sapienza University, Rome Back to Top Sapienza University of Rome, Physics Department Office:

< Back Isabella Santanchè Master Student Curriculum Vitae Publications since 2023 Master Student of Science (MSc) in Condensed Matter Physics at Sapienza University, Rome. 2020-2023 Bachelor of Science (BSc) in Physics at Sapienza University, Rome Back to Top Sapienza University of Rome, Physics Department Office: n° 312, third floor, Marconi building, Physics Department

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< Back Marta De Luca Principal Investigator Curriculum Vitae Publications Academic Career 2023-today Associate Professor in the Physics Department, Sapienza University of Rome (Italy), following a direct call for ERC grant owners. 2021-2023 Tenure-track Professor in the Physics Department, Sapienza University of Rome, following a direct call for Rita Levi Montalcini grant owners. 2019-2021 Researcher in the Physics Department of the University of Basel (Switzerland), owing to an Ambizione grant by the Swiss National Science Foundation. 2015-2019 Post-doc researcher in the Physics Department of the University of Basel in the ‘Nanophononics group’ of Prof. I. Zardo. 2014-2015 Post-doc researcher in Sapienza University in the group ‘Optical Spectroscopy of Nanostructured Materials Lab’ of Prof. A. Polimeni. Education 2011-2014 PhD in Materials Science (curriculum: Physics of semiconductors) in the Physics Department of Sapienza University. Title of the thesis: ‘Optical and magneto-optical studies of III-V semiconductor nanowires’. 2009-2011 Master degree in Physics at Sapienza University, 110/110 cum laude. 2006-2011 Bachelor degree in Physics at the same University, 110/110 cum laude. Grants 2023-2025 PRIN grant by Italian Ministry of University and Research in collaboration with CNR Pisa. Project title: ‘GROUNDS: Growth and optical studies of tunable quantum dots and superlattices in semiconductor nanowires’. Role: PI. Funding for Sapienza: 95 k€. 2023-2027 Sapienza grant for PI of ERC. Project title: ‘HELIOS: Bright telecom-band single photon sources in bottom-up nanowire waveguides’. Role: PI. Funding: 100 k€. 2024-2027 Sapienza grant for finalists to Horizon Europe grants. Role: PI. Funding: 21.5 k€. 2023-2026 PNNR grant by Italian Ministry of University and Research. We participate to the activities of spoke 4: ‘Development of single photon quantum states based on quantum dots operating at different wavelengths’. Role: participant with funding. 2022-2027 ERC starting grant by European Research Council. Project title: ‘ NANOWHYR. Dots-in-NANOWires by near-field illumination: novel single-photon sources for HYbRid quantum photonic circuits ’. Role: PI. Funding: 1.5 M€. 2021-2023 Rita Levi Montalcini grant by the Italian Ministry of University and Research. Project title: ‘Engineering the functional properties of semiconductors at the nanoscale: from photonic to thermoelectric applications’. Role: PI. Funding: 302 k€. 2019-2024 Ambizione grant by the Swiss National Science Foundation. Project title: ‘Quantum structures in nanowires: physical properties on demand by hydrogen irradiation ’. Role: PI. Funding: 904 k€. Prizes 2021 Italian Society of Physics: ‘Laura Bassi’ prize, for being the best female physicist across all areas of physics in 2021. 2020 Italian Ministry of University and Research: ‘Rita Levi Montalcini’ prize, for being among the 24 most brilliant researchers (across all disciplines) abroad and become tenure-track Professors in an Italian institution. 2016 Institute of Physics: ‘Emerging leaders’ award from IOP (Institute of Physics) for scientists in the early years of their research careers identified as leaders who will shape the direction of research in the next 50 years. 2015 ‘Best PhD thesis 2015’ prize by Sapienza University of Rome for the best five PhD thesis in 2015. The prize allowed the publication of a book based on the thesis by ‘Sapienza University’ Editor. 2014 Italian Society of Physics: ‘Piero Brovetto’ prize for the outstanding research on the magneto-optical properties of nanostructures during the PhD. 2014 & 2012 ‘Start a research’ personal grants by Sapienza for the post-doc (2014) & PhD (2012) projects. 2012 Award by the EU organization COST Action (Novel Gain Materials and Devices Based on III-V-N Compounds) for the ‘ICPS 2012’ Conference in Zurich in 2012. 2012 European Materials Research Society: Graduate Student award for the best oral presentation in the conference, for research on the electronic properties of hydrogenated InGaN alloys. Invited talks International Symposium on Semiconductor Optoelectronics and Nanotechnology (ISSON) (Australia, 12/2024) The Conference on Optoelectronic and Microelectronic Materials and Devices (COMMAD) (Australia, 12/2024) The Nanotechnology Materials and Devices Conference of IEEE (Italy, 10/2023) The International Conference on Phonon Scattering in Condensed Matter (France, 07/2023) The International Symposium on Nanowire Photonics (UK, 11/2022) The International Conference on Solid State Devices and Materials (SSDM) conference (Japan, 09/2022) The 2DMAT2021 conference (France, 08/2021) The Asian Regional High Field Magnet conference (Japan, 12/2020) The EMN conference on Nanowires (Mauritius, 11/2019) The Swiss Forum on quantum technologies (Switzerland, 05/2019) The workshop on Advances in Materials at the EPFL (Switzerland, 03/2019) The International workshop and PhD school ‘Nanostructures for photonics’ (Russia, 05/2018) The Nanowires 2017 conference (Sweden, 06/2017) The workshop on Quantum Science and Technologies in Basel (Switzerland, 03/2017) Invited colloquia Colloquium at the Federico II University of Naples for the seminars cycle in Quantum Science and Technology (Italy, 10/2023) Seminar at the Institute of Materials at the EPFL (Switzerland, 02/2022) Colloquium at the Physics Department, Sapienza University of Rome (Italy, 10/2020) Seminar at the EMPA Institute of the ETH (Switzerland, 07/2020) Colloquium at the Institute of Materials Science of Barcelona (Spain, 02/2020) Colloquium at SFB-Kolloquium: emergent relativistic effects, University of Regensburg (Germany, 12/2019) Seminar at the Applied Physics Department, Technical University Eindhoven (The Netherlands, 11/2019) Seminar at the Physics Department, University of Münster (Germany, 06/2019) Seminar at the EMPA Institute of the ETH (Switzerland, 09/2018) Seminar at the Laboratoire National des Champs Magnétiques Intenses de Toulouse (France, 01/2015) Editorial activities Editorial board member of the journal Nano Futures (2021-today). Associate editor for Wiley-VCH ‘Encyclopaedia of Applied Physics’ (EAP), section: Thermoelectrics (2017-2023). Back to Top Sapienza University of Rome, Physics Department marta.deluca@uniroma1.it Office: n° 350, third floor, Marconi building, Physics Department

< Back Mario Roggi Master Student Curriculum Vitae Publications 2022-2024 Master of Science (MSc) in Condensed Matter Physics at Sapienza University, Rome. Completed his master’s thesis in the Nanospectroscopy Group at the Physics Department of the Sapienza University, focusing Low Temperature Micro-photoluminescence Measurements of III-V Nanowire Quantum Dots. 2018-2022 Bachelor of Science (BSc) in Physics at Sapienza University, Rome Back to Top Sapienza University of Rome, Physics Department Office:

Our Techniques Room Temperature & Cryogenic Photoluminescence and Raman Spectroscopy Setups In the Nano-spectroscopy Lab we do spectroscopy at the nanoscale on nanostructures. We are expert in the design and realization of customized advanced optical spectroscopy setups for photoluminescence, absorption, and Raman measurements performed in a spatially-resolved manner on single nanostructures. We are able to work at the edge of the light diffraction limit or to beat it with several techniques, such as beam shaping or coupling to AFM tips (near-field optical microscopy), achieving a 50-100 nm spatial resolution. Low-temperature Spectroscopy Setup We have room temperature and cryogenic (closed-cycle cryo-free cryostat) setups, both with positioning accuracy of 50 nm. We apply optical techniques under different experimental conditions (varying excitation power density, sample temperature, light polarization, magnetic fields). By creating our customized setups we maximize signal-to-noise ratio with respect to commercial setups. Tunable Excitation Light We have three extra narrow-band continuous wave lasers and one pulsed light source with tunable wavelength (450-1100 nm) and tunable repetition rate. We have spectrometers and detectors to detect signal from 450 nm to 2100 nm. Second-order autocorrelation Setup We can perform also second-order autocorrelation measurements under continuous wave or pulsed excitation, as well as time resolved photoluminescence spectroscopy. Micromanipulation Setup We are specialized in the micro-manipulation of single nanostructures under optical microscope, and in the integration of nanostructures into new devices. For transfering our low dimensional materials, such as flakes, we have access to the Department facilities coupled to anaerobic chamber. Micromanipulators equipped with tips for fine nanowire placement To perform pick-and-place techniques with nanowires we employ glass or metal needles (100 nm to 500 nm of tip radius). Nanowire on TEM Grid Pick-and-place allows to pick up selected nanowires from the growth chip and transfer them to TEM grids for further investigation.

Our Goals Nanostructures, such as 2D materials or nanowires, have revolutionized the field of semiconductors, making it possible, among others, to transform indirect bandgap materials to direct bandgap materials, or making it possible for a crystal to grow in a crystal structure that does not exist in bulk. We work in close collaboration with several growth laboratories providing nanostructures, and we functionalize them by several methods, such as hydrogen or helium irradiation, laser heating, thermal annealing, nanoscale patterning etc. to achieve the desired properties. Working at the boundaries between fundamental physics and technological applications, our goal is to achieve new functionalities or explore new physical effects. Advances in Optics and Photonics 13 (2021): 242. However, in the Nano-spectroscopy group we are not happy to work just with nanostructures: we create nanostructures inside the nanostructures. In our vision the nanostructures are scaffolds embedding smaller quantum structures (quantum dots, point defects that emit single photons, quantum rings, quantum wells, etc.) with diverse dimensionalities (0D, 1D, and 2D). For example, in nanowire lasers, by embedding quantum confined structures as active gain media it is possible to enhance the gain and lower lasing threshold. Moreover, by embedding quantum dots in nanowires for quantum photonic applications based on single photon emitters, it can be possible to obtain a higher photon extraction than in standard self-assembled dots embedded in a 3D matrix, owing to the possibility to design the nanowire to act as a waveguide with a photon out-coupler. This makes quantum dots in nanowires the ideal building block of quantum photonic circuits. Furthermore, by embedding quantum rings in quantum wells, one can unveil the topological phase of charge carriers, by controlling the appearance of magnetic states expected due to the circular symmetry of the carrier wavefunction (Aharonov-Bohm effect). Explore our Projects Physics Today 1 September 2009; 62 (9): 38–43

Teaching You can find more information on the courses taught by Prof. Marta De Luca here . Physics for Biology Info here: e-learning Laboratory of Mechanics for Physicists Info here: e-learning