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#caltech — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #caltech, aggregated by home.social.

  1. Interesting video from Caltech (where I went to college) and JPL about the invention of CMOS image sensors (though Wikipedia makes me think lots of others were working in this area at the time) in the 1990s.

    youtu.be/LqSLD4LBEIU

    Amazingly I bought my first digital camera, a $600 Olympus with 640x480 resolution and non-removable memory for only 20 such images (I think it was the D-200L) in time for my cross country bicycle trip in 1997.

    #Caltech #JPL #CMOS #DigitalCamera #1990s #Olympus

  2. #ORF:
    "
    Neuartige Solarzellen bestehen Härtetest im All

    Solarzellen auf Basis von sauerstoffhaltigen Perowskit-Kristallen .. Team um Linzer Forscher hat „quasi-2D-Perowskit-Solarzellen“ zusammen mit Partnern aus den USA und Deutschland nun erfolgreich in rund 540 Kilometern Höhe einem echten Härtetest unterzogen.
    "
    ooe.orf.at/stories/3342495/

    18.2.2026

    #Caltech #ISTA #JKU #LIT #Perowskit #Raumfahrt #Satelliten #Solarzelle #SpaceFlight #SSPD1 #Strahlung #Weltraum

  3. New #openaccess publication #SciPost #Physics

    Sequential adiabatic generation of chiral topological states

    Xie Chen, Michael Hermele, David T. Stephen
    SciPost Phys. 19, 107 (2025)
    scipost.org/SciPostPhys.19.4.1

    #CalTech #UCB

  4. #Caltech physicists created the largest #neutralatom #quantumcomputer to date, trapping 6,100 #cesiumatoms as #qubits. The team achieved coherence times of about 13 seconds while performing single-qubit operations with 99.98% accuracy. This #milestone sets a new #benchmark for neutral-atom quantum computing and strengthens the case for its viability as a leading platform. decrypt.co/341716/caltech-buil #tech #media #news

  5. New #openaccess publication #SciPost #Physics

    Charting the space of ground states with tensor networks

    Marvin Qi, David T. Stephen, Xueda Wen, Daniel Spiegel, Markus J. Pflaum, Agnès Beaudry, Michael Hermele
    SciPost Phys. 18, 168 (2025)
    scipost.org/SciPostPhys.18.5.1

    #UCB #CalTech #Harvard

  6. New #openaccess publication #SciPost #Physics

    Subsystem symmetry fractionalization and foliated field theory

    Po-Shen Hsin, David T. Stephen, Arpit Dua, Dominic J. Williamson
    SciPost Phys. 18, 147 (2025)
    scipost.org/SciPostPhys.18.5.1

    #ManiLBhaumik #CalTech #UCB #USYD

  7. UVEX: Neues UV-Weltraumteleskop der NASA mit ISTA-Fingerabdruck startet 2030
    Trägt Handschrift einer Astrophysikerin des ISTA. Assistenzprofessorin Ylva Götberg wird untersuchen, wie sich Galaxien & Sterne entwickeln, & gemeinschaftlichen Datensatz für gesamten Himmel erstellen. Pressemitteilung #ISTA. Grafik: #UVEX/ #Caltech
    raumfahrer.net/uvex-das-neue-u

  8. ERDAL ARIKAN WAS born in 1958 and grew up in Western Turkey, the son of a doctor and a homemaker.

    He loved science.

    When he was a teenager, his father remarked that, in his profession, two plus two did not always equal four.

    This fuzziness disturbed young Erdal; he decided against a career in medicine. He found comfort in engineering and the certainty of its mathematical outcomes.

    “I like things that have some precision,” he says. “You do calculations and things turn out as you calculate it.”

    Arıkan entered the electrical engineering program at Middle East Technical University. But in 1977, partway through his first year, the country was gripped by political violence, and students boycotted the university.

    Arıkan wanted to study, and because of his excellent test scores he managed to transfer to #CalTech, one of the world's top science-oriented institutions, in Pasadena, California.

    He found the US to be a strange and wonderful country. Within his first few days, he was in an orientation session addressed by legendary physicist #Richard #Feynman. It was like being blessed by a saint.

    Arıkan devoured his courses, especially in #information #theory.

    The field was still young, launched in 1948 by #Claude #Shannon, who wrote its seminal paper while he was at Bell Labs;
    he would later become a revered MIT professor.

    Shannon's achievement was to understand how the hitherto fuzzy concept of information could be quantified, creating a discipline that expanded the view of communication and data storage.

    By publishing a general mathematical theory of information
    —almost as if Einstein had invented physics and come up with relativity in one swoop
    —Shannon set a foundation for the internet, mobile communications, and everything else in the digital age.

    The subject fascinated Arıkan, who chose #MIT for graduate studies.

    There was one reason: “#Bob #Gallager was there,” he says.

    Robert Gallager had written the textbook on information theory. He had also been mentored by Shannon's successor.

    In the metrics of the field, that put him two steps from God.

    “So I said, if I am going to do information theory,” Arıkan says, “MIT is the place to go.”

    By the time Arıkan arrived at MIT, in 1981, Gallager had shifted his focus and was concentrating on how data networks operated.

    Arıkan was trembling when he went to Gallager's office for the first time. The professor gave him a paper about packet radio networks.

    “I was pushing him to move from strict information theory to looking at network problems,” Gallager says.

    “It was becoming very obvious to everyone that sending data from one place to another was not the whole story
    —you really had to have a system.”

    #Guo #Ping #Huawei #Ren #Zhengfei #gold #medal #honored #guest #Erdal #Arıkan #5G #technology #daughter

  9. New #openaccess publication #SciPost #physics

    Building models of topological quantum criticality from pivot Hamiltonians

    Nathanan Tantivasadakarn, Ryan Thorngren, Ashvin Vishwanath, Ruben Verresen
    SciPost Phys. 14, 013 (2023)
    scipost.org/SciPostPhys.14.2.0
    #CalTech
    #HarvardUniversity
    #MIT
    #KITP
    #CRSNG
    #SimonsFoundation

  10. New #openaccess publication #SciPost #physics

    Pivot Hamiltonians as generators of symmetry and entanglement

    Nathanan Tantivasadakarn, Ryan Thorngren, Ashvin Vishwanath, Ruben Verresen
    SciPost Phys. 14, 012 (2023)
    scipost.org/SciPostPhys.14.2.0
    #CalTech
    #HarvardUniversity
    #MIT
    #KITP
    #CRSNG
    #SimonsFoundation