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Tuesday, June 20, 2023

This Week in Physics — Long-Range Quantum Cryptography Gets Simpler

 

This Week in Physics Magazine — June 20, 2023

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Long-Range Quantum Cryptography Gets Simpler

Marco Avesani – June 20, 2023

A series of demonstrations considerably ease the requirements for implementing quantum cryptography protocols over large distances.

Research News

Dark Energy Spectroscopy Instrument Releases First Data

June 16, 2023

The first data collected by the Dark Energy Spectroscopy Instrument contain close to 2 million objects, including a roughly 12-billion-year-old quasar. The collaboration expects to report their first cosmology-related results within a year.

Q&A

From Whiskey to Oreos

June 15, 2023

When the pandemic hit, Arnold Mathijssen embraced food physics, a field he thinks exemplifies the need for science to become more interdisciplinary and diverse.

Video

Controlling the Bounce of a Bottle

June 16, 2023

Dropping a rotating plastic bottle containing water results in a bounce whose height depends on the rotation rate.

Research News

Sensor Judges Taste of Raw Maple Syrup

June 15, 2023

Climate change is altering late-season maple syrup, but a portable plasmonic sensor could help avoid waste by detecting molecules in a tree's sap that lead to an off-tasting batch.

synopsis

Radio Bursts Precede Coalescence of Neutron Stars

June 16, 2023

Warning of the catastrophic collapse of a neutron star could come in the form of potentially detectable radio bursts in the 10–20 gigahertz range.

synopsis

Accretion Explored through Gravitational Waves

June 15, 2023

Future space-based gravitational-wave detectors could probe the physics of accretion disks surrounding massive black holes.

synopsis

Excited Sodium-32 with a Spherical Wave Function

June 13, 2023

Researchers may have found an unstable sodium nucleus that has an excited state with a spherical wave function—an elusive prospect for the study of nuclear shapes.

Research News

Phonons on the Splitting Block

June 13, 2023

Using a "bad" acoustic mirror, physicists demonstrate a phonon beam splitter, a device that could one day be used to make phonon-based quantum logic gates.

synopsis

Squeezing Superconductors

June 14, 2023

Experiments on a family of cuprate superconductors resolve discrepancies in previous work and elucidate why the critical temperature varies with pressure.



 

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