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    • Counting single photons at unprecedented rates

      Phys.org· 4 days ago

      Each pulse can be as faint as a single photon, the smallest possible unit (quantum) of light. The speed at which such systems can operate depends critically on how fast and how accurately detectors ...

    • America’s Come-From-Behind Pandemic Victory

      Foreign Policy Magazine· 19 hours ago

      By mid-March 2020, the conventional wisdom was COVID-19 was a disaster for the United States: a “Suez moment” for a declining superpower. COVID-19 has...