INRiM apre il “Ciclo Seminari INRiM”, una serie di conferenze tenute da personale INRiM e da relatrici e relatori provenienti da Istituti nazionali e internazionali, promossa con lo scopo di favorire scambio di conoscenze, sinergie e collaborazioni di carattere scientifico.
I seminari, di cadenza bisettimanale, si terranno in modalità virtuale il Lunedì dalle 14:00 alle 15:00.
La partecipazione è gratuita e aperta a tutte/i. Di seguito il calendario dei seminari.
“Silicon carbide, an emerging material platform for photonic integrated circuits (PIC) and quantum photonic integrated circuits (QPIC)”
Speaker:
Dott.ssa Ou Haiyan (Technical University of Denmark – DTU)
Abstract:
Silicon carbide (SiC), as wide bandgap semiconductor, possesses unique physical properties. These unique properties are being explored to provide radical solutions comparing to its counterparts such as silicon and gallium arsenide, representatives for the first and second generation semiconductors respectively.
For example, SiC is playing a very important role in power electronics due to its high electron breakdown field, high electron saturation velocity, wide bandgap, high melting point and high thermal conductivity. SiC based power electronic devices consume less energy and have better performances.
Additionally, SiC also has super optical properties such as both high second-order and third-order nonlinearity. Leveraging the mature material growth and processing technology during the development of power electronics, SiC is emerging as a promising material platform for PIC. Different polytypes ( 6H, 4H, 3C and amorphous) SiC waveguides have been demonstrated with loss as low as several dB/cm. Correspondingly, optical cavities (photonic crystal, mirroring resonator, microdisk) have achieved quality factor as high as 1 million. The tight optical confinement and high quality factor optical cavities enable the nonlinear study of SiC by taking use of conventional lab equipment.
For example, the four-wave mixing experiment was demonstrated with input power requirement at dozens of mW level. These are fundamental and crucial for frequency conversion, optical frequency comb generation etc.
Furthermore, color centers in bulk SiC have been extensively investigated and show advantages over its peers (color centers in diamond and III-V quantum dots) over the following aspects.
Some of the color centers in SiC emit at the telecommunication wavelengths, the low transmission loss window of optical fibers, making it an ideal source for quantum communication using the existing fiber network. Some color centers in SiC have long spin coherent time, which is crucial for quantum memory, another crucial building block for quantum PIC.
Some color centers in SiC operate at room temperature, which is important for quantum technology leaving the lab and being implemented widely. As pioneer of applying silicon carbide in photonics, in this talk, I’ll present the state of the art of the SiC nanophotonics and color centers in bulk SiC. Prospectives of SiC PIC and QPIC will be foreseen and the challenges will be identified.
Per assistere al seminario: meet.google.com/ixc-esqo-yfg
17 APRILE 2023
"Sequential infiltration synthesis: Applications from lithography to clean water"
Incontro con Seth B. Darling I Argonne National Laboratory, Lemont, Illinois
03 APRILE 2023
"La metrologia per la diagnostica molecolare: la digital PCR come metodo di riferimento"
Incontro con Jessica Petiti I INRiM
20 MARZO 2023
"Printable thermoelectric devices"
Incontro con Andrea Reale I CHOSE – Centre for Hybrid and Organic Solar Energy and Dept. of Electronic Engineering, University of Rome “Tor Vergata”
13 MARZO 2023
“Nuove frontiere dell’Esplorazione lunare e delle comunicazioni quantistiche via satellite”
Incontro con Mario Musmeci e Daniele Dequal I ASI – Agenzia Spaziale Italiana
13 FEBBRAIO 2023
"L’Infrastruttura di Ricerca Europea METROFOOD-RI & il progetto PNRR METROFOOD-IT"
Incontro con Claudia Zoani I ENEA, Centro Ricerche Casaccia, Roma
06 FEBBRAIO 2023
“iENTRANCE@ENL - a new research infrastructure for energy transition and circular economy within the NextGenEU Program”
Incontro con Vittorio Morandi I Consiglio Nazionale delle Ricerche, Istituto per la Microelettronica ed i Microsistemi (CNR-IMM), Sede di Bologna
30 GENNAIO 2023
“The Next Decade of the US Materials Genome Initiative”
Incontro con James A. Warren I Director, Materials Genome Program Material Measurement Laboratory at NIST
23 GENNAIO 2023
“NIST on a Chip: bringing precision metrology out of the lab and into the field”
Incontro con Barbara L. Goldstein I Associate Director of the Physical Measurement Laboratory at NIST; Program Manager, NIST on a Chip
05 DICEMBRE 2022
“Thermodynamics of Precision in quantum thermal machines: theory and experiment”
Incontro con Giacomo Guarnieri I Dahlem Center for Complex Quantum Systems, Freie Universität Berlin
28 NOVEMBRE 2022
“Step-change in radiometry provided by improved predictable quantum efficient detectors”
Incontro con Jarle Gran I Justervesenet - Norwegian Metrology Institute, Kjeller, Norway
14 NOVEMBRE 2022
"Advanced bioengineering methods for direct cell reprogramming in myocardial regeneration"
Incontro con Camilla Paoletti I Department of Mechanical and Aerospace Engineering, Politecnico di Torino
24 OTTOBRE 2022
“The interaction of light with matter (and viceversa)”
Incontro con Gianni Jacucci I Kastler-Brossel Laboratory - ENS, Sorbonne U., CNRS, Collège de France
19 SETTEMBRE 2022
“Magnetic Techniques for Rapid Diagnostic Testing for Health Care and Environmental Monitoring”
Incontro con Montserrat Rivas I Universidad de Oviedo
