# HG changeset patch # User Daniele Nicolodi # Date 1634482357 -7200 # Node ID 045a6ada0d463c450f8ed66e54f6d77078ee3f01 # Parent 608d784415700f228fa9d9759a3495434ee8704e publications.bib diff -r 608d78441570 -r 045a6ada0d46 cv.tex --- a/cv.tex Sun Oct 17 16:52:28 2021 +0200 +++ b/cv.tex Sun Oct 17 16:52:37 2021 +0200 @@ -69,98 +69,94 @@ % protocol analysis and implementation. \end{description} -\section{Research activity and interests} +\section{Research activity} \begin{dottedlist} - frequency metrology \and ultra-stable lasers \and optical lattice - clocks \and optical frequency combs \and low phase-noise photonic - microwave generation \and laser frequency stabilization \and phase - noise characterization \and spectral purity transfer \and fiber and - free-space optical frequency transfer -\end{dottedlist} - -\noindent -At NIST, I contribute to the Yb optical lattice clock experiments, -currently the most accurate optical lattice clocks ever implemented. I -lead the effort aimed at improving the clocks frequency stability by -developing a cryogenic sapphire high-finesse optical cavity for -frequency stabilization of the clocks interrogation laser beyond the -thermal noise limit of state-of-the-art room-temperature optical -cavities. I contribute to clocks systematic uncertainty evaluation. - -At SYRTE, I realized fiber-based optical frequency combs systems for -optical frequency stability transfer with unprecedented frequency -stability across the optical spectrum and to the microwave domain. I -participated in the development of a digital phasemeter used for phase -noise characterization with unprecedented sensitivity via -cross-spectrum analysis. I was responsible for the operation of the -optical frequency combs involved in local optical and microwave clock -comparisons, as well as in the long distance clock comparisons through -optical fiber network. I collaborated in the setup of the frequency -metrology chain involved in those experiments. - -\section{Previous research activity} -\begin{dottedlist} - force metrology \and torsion pendulums \and macroscopic free-falling - test masses \and gravitational waves detection \and mechanical - dissipation \and optical interferometers + optical frequency metrology \and ultra-stable lasers \and optical + atomic clocks \and optical frequency combs \and photonic microwave + generation \and spectral purity transfer \and fiber and free-space + optical frequency transfer \and gravitational waves detection \and + torsion balances \end{dottedlist} \noindent -At Trento University, my research activity focused on the study of the -limits for achieving near perfect free-fall of macroscopic test masses -for the observation of gravitational waves. I conducted on-ground -measurement of small force disturbances acting on the free-falling -test masses of the LISA space low-frequency gravitational wave -detector and its precursor mission LISA Pathfinder, exploiting the -femto-Newton level sensitivity of a torsion pendulum. I performed the -experimental activity, I developed data analysis routines, I designed -and implemented upgrades to the torsion pendulum system, improving its -sensitivity and pushing the limits of small force metrology. I lead -the initial development of a low-noise torsion pendulum angular -position read-out based on an heterodyne wavefront-sensing -interferometer with nanoradian sensitivity. I collaborated to the -development of the LTPDA Matlab Toolbox. +Ultra-stable lasers are essential optical atomic clocks, quantum +devices based on cold atoms, and quantum communications. Better laser +frequency stability will improve optical atomic clocks timekeeping +stability and will enable more stringent fundamental physics tests +that will challenge our understanding of the universe. Cryogenic +high-finesse optical cavities allow to overcome the thermal noise +limit of room-temperature optical cavities and represent the +state-of-the-art in laser frequency stabilization. I develop +cryogenic optical cavities targeting even better laser frequency +stability by operating at lower temperatures and employing new +designs, novel mirror technologies, and different materials. + +Optical atomic clocks are the most accurate measurement devices ever +realized and are set to replace microwave Cs clocks as definition of +the second. I contributed to the development and systematic +uncertainty evaluation of NIST's Yb optical lattice clocks that made +these clocks the world's most accurate optical clocks. I contributed +to the measurement campaigns that compared NIST's Yb optical lattice +clocks with other optical atomic clocks and with microwave primary and +secondary frequency standards via optical fiber links and satellite +microwave links. The unprecedented accuracy and the agreement +demonstrated between the clocks realized an important milestone toward +the future redefinition of the second. -\section{Awards} -\begin{description} - \item[2019 \enspace PML Distinguished Associate Award, NIST] For - creating and networking the world's best optical atomic clocks for - a 100-fold improvement in precision timekeeping over state of the - art. -\end{description} +Exploiting ultra-stable lasers for scientific and technological +applications most often requires transferring their exquisite +frequency stability to oscillators operating at a different +frequency. I developed a fiber-based optical frequency comb system +that realized optical frequency stability transfer between lasers +widely different wavelength with unprecedented and unsurpassed +frequency stability. Low phase noise microwaves sources are paramount +for many applications, including precision metrology, deep-space +navigation, coherent radar, and wireless communications. In +collaboration with industrial partners, I developed a fiber-based +optical frequency comb system for photonic microwave generation with +unprecedented and unsurpassed low phase noise and zeptosecond-level +absolute timing noise. This system has then been commercialized. + +Gravitational waves observations are revolutionizing astronomy and +astrophysics. Detecting gravitational waves relies on +interferometrically measuring the distance between test-masses in near +perfect free-fall. I conducted on-ground measurement of the small +force disturbances acting on the test-masses of the LISA space +gravitational waves detector exploiting the femto-Newton level +sensitivity of a torsion balance. I identified and modelled an +unexpected increase of Brownian noise from residual gas molecules +collisions in constrained geometries, with repercussions on the design +of LISA and second generation ground-based gravitational wave +detectors. I contributed to the design of the LISA Pathfinder mission +for the in-flight testing of the concept of low-frequency +gravitational waves detection in space and that validated the +disturbance model developed from the on-ground measurements. \section{Skills and competences} -I developed experiments that realized unprecedented performances. I -designed and realized measurement systems, modelling and optimizing -their performances. I designed and implemented innovative measurement -techniques. I have experience with the redaction of research project -and funding applications. I have successfully participated in large -international collaborations and in smaller focused collaboration. I -participated in industrial and academic collaborations with -outstanding results. I have experience in the interaction with the -aerospace industry. I have co-supervised master and PhD students. +I developed experiments that advanced the state-of-the-art in the +respective domains by realizing unprecedented performances. I designed +and implemented innovative measurement techniques. I have experience +in experiment design and optimization. I have redacted of research +project and funding applications. I have been working with outstanding +results in large international collaborations and in smaller focused +collaborations both with industrial and academic partners. I have +experience in the interaction with the aerospace industry. I have +co-supervised master and PhD students. -I have extensive working experience with optical frequency combs, -ultra-stable lasers, high-finesse optical cavities, free-space and -fiber optical systems, very low noise audio-frequency, -radio-frequency, and microwave electronics, software-defined radios, -ultra-high vacuum systems, cryogenics and close-cycle cryostats, -precision mechanics, data acquisition hardware and software, computer -controlled experiments. +I have extensive experience with optical frequency combs, ultra-stable +lasers, high-finesse optical cavities, free-space and fiber optical +systems, very low noise audio-frequency, radio-frequency, and +microwave electronics, software-defined radios, ultra-high vacuum +systems, cryogenics and close-cycle cryostats, data acquisition +hardware and software. I developed data analysis methods and numerical simulations. I am proficient programming in C, C\texttt{++}, Python, Perl, Matlab, -LabVIEW, and Lisp, with specific experience in scientific computing -and data analysis. I have designed and realized real-time data -acquisition and processing, and I have knowledge of real-time -programming techniques. I master and routinely take advantage of -modern software development techniques and version control systems. -I'm passionate about Free Software and I contribute to several Free -Software projects. I have experience in system administration of -GNU-Linux systems and I'm comfortable working in Unix, macOS, and -Microsoft Windows computing environments. I have good knowledge of the -LaTeX typesetting system. +LabVIEW, and Lisp. I have designed and implemented real-time data +acquisition and processing. I master modern software development +techniques and version control systems. I am passionate about Free +Software and I contribute to Free Software projects. % \section{Other relevant experiences} % \begin{description}[style=sameline] @@ -186,12 +182,19 @@ basic communication skills, good understanding. \end{description} -% publications +\section{Awards} +\begin{description} + \item[2019 \enspace PML Distinguished Associate Award, NIST] For + creating and networking the world's best optical atomic clocks for + a 100-fold improvement in precision timekeeping over state of the + art. +\end{description} + \section{Publications} 35 articles in peer-reviewed international journals: Nature, Science, -Nature Photonics, Physical Review Letters, Classical and Quantum -Gravity. Cited 1280 times. H index 21. Two invited and 8 more talks at -international conferences. +Nature Photonics, Physical Review Letters, Optica, Classical and +Quantum Gravity, and others. Cited 1350 times. H index 24. Two +invited and 8 more talks at international conferences. \printbibliography[heading=none] diff -r 608d78441570 -r 045a6ada0d46 publications.bib --- a/publications.bib Sun Oct 17 16:52:28 2021 +0200 +++ b/publications.bib Sun Oct 17 16:52:37 2021 +0200 @@ -140,7 +140,7 @@ JOURNAL = {Nature Photonics}, VOLUME = {9}, ISSUE = {7}, - PAGES = {456--460}, + PAGES = {456-460}, YEAR = {2015}, MONTH = {07}, DOI = {10.1038/nphoton.2015.93}, @@ -370,7 +370,7 @@ } @article{science-2020, - title = {Coherent optical clock down-conversion for microwave frequencies with $\mathit{10^{-18}}$ instability}, + title = {Coherent optical clock down-conversion for microwave frequencies with $10^{-18}$ instability}, journal = {Science}, year = {2020}, volume = {368}, @@ -390,7 +390,7 @@ } @article{physreva-2019, - title = {Measurements of $^{27}$Al$^+$ and $^{25}$Mg$^+$ magnetic constants for improved ion-clock accuracy}, + title = {Measurements of $^{27}\mbox{Al}^+$ and $^{25}\mbox{Mg}^+$ magnetic constants for improved ion-clock accuracy}, journal = {Physical Review A}, year = {2019}, volume = {100}, @@ -398,3 +398,12 @@ pages = {013409}, doi = {10.1103/physreva.100.013409}, } + +@article{nature-2021, + title = {Frequency ratio measurements at 18-digit accuracy using an optical clock network}, + journal = {Nature}, + year = {2021}, + volume = {591}, + pages = {564-569}, + doi = {10.1038/s41586-021-03253-4}, +}