Researchers have created a one-dimensional “quantum wire” made from a #gas of #ultracold atoms, where #mass and #energy flow without friction or loss.
#QuantumScience #Physics #sflorg
https://www.sflorg.com/2025/11/qs11282501.html
When Quantum Gases Refuse to Follow the Rules

Confining thousands of rubidium atoms to move along a single line using magnetic and optical fields

Researchers from Hanns-Christoph Nägerl's group have produced the world’s first #ultracold #KCs #molecules in their absolute ground state. Starting by mixing clouds of potassium and caesium atoms cooled almost to absolute zero temperature
#MolecularScience #Chemistry #sflorg
https://www.sflorg.com/2025/11/mols11172501.html
Molecules assem­bled by hand

Weakly bound KCs molecules are transferred into what is known as their “absolute ground state”.

Scientists Confirm the Incredible Existence of ‘Second Sound’

Scientists have imaged heat traveling as a wave, called "second sound," in superfluid quantum gas. It may unlock mysteries of neutron stars and superconductors.

Popular Mechanics
After the first successful run in 2022, we are holding our conference Ultracold Atoms Japan again from 9-12 April 2024. If you like cold atoms and subtropical islands, come and join us! Application is now open (deadline 9 Jan 2024).
#OIST
#ultracold
https://groups.oist.jp/ultracoldjapan
Ultracold Atoms Japan 2024

Ultracold Atoms Japan 9-12 April 2024

OIST Groups

"Here..we report, to our knowledge, the first simultaneous production of a dual-species BEC in space (formed from 87Rb & 41K), observation of interspecies interactions, as well as the production of 39K #ultracold gases. Operating a single #laser at a ‘magic wavelength’ at which Rabi rates of simultaneously applied Bragg pulses are equal, we have further achieved the first spaceborne demonstration of simultaneous atom #interferometry with 2 atomic species (87_Rb & 41_K)"

https://www.nature.com/articles/s41586-023-06645-w

Quantum gas mixtures and dual-species atom interferometry in space - Nature

Using upgraded hardware of the multiuser Cold Atom Lab (CAL) aboard the International Space Station (ISS), Bose–Einstein condensates (BECs) of two atomic isotopes are simultaneously created and used to demonstrate interspecies interactions and dual species atom interferometry in space.

Nature
Tim Langen #1

Ajouté par : Ubi Houches

POD
US researchers have observed a phenomenon known as ‘quantum superchemistry,’ in which ultracold atoms undergo chemical reactions at a faster rate than usual. The effect was predicted theoretically more than 20 years ago, but this is one of the first times the phenomenon been seen.
US researchers have observed a phenomenon known as ‘quantum superchemistry,’ in which ultracold atoms undergo chemical reactions at a faster rate than usual.
https://www.chemistryworld.com/news/a-giant-leap-for-quantum-superchemistry/4017895.article #quantum #superchemistry #ultracold #chemical #reactions
A giant leap for ‘quantum superchemistry’

Ultracold atoms can undergo chemical reactions all at once

Chemistry World

New review paper on the recent striking advances in the manipulation and #quantum science of #ultracold #molecules. Great collaboration with Giacomo Valtolina (Fritz-Haber-Institut, Berlin), Dajun Wang (CUHK, Hong Kong) and Jun Ye (JILA, Boulder).

https://arxiv.org/abs/2305.13445

Hope this is useful to those new (and maybe not so new) to this exciting field!

#wequantum @Uni_Stuttgart

Quantum state manipulation and cooling of ultracold molecules

An increasingly large variety of molecular species are being cooled down to low energies in recent years, and innovative ideas and powerful techniques continue to emerge to gain ever more precise control of molecular motion. In this brief review we focus our discussions on two widely employed cooling techniques that have brought molecular gases into the quantum regime: association of ultracold atomic gases into quantum gases of molecules and direct laser cooling of molecules. These advances have brought into reality our capability to prepare and manipulate both internal and external states of molecules quantum mechanically, opening the field of cold molecules to a wide range of scientific explorations.

arXiv.org
RT @SimonLCornish: Looking forward to chairing this meeting. It is an exciting time for #ultracold #molecules
Please retweet as there is still time to join the meeting! https://t.co/NLvX5sQw46
Royal Society Publishing on Twitter

“Join our upcoming residential scientific meeting on ultracold molecules and quantum science, led by Professor @SimonLCornish @DurhamPhysics @DurhamQLM, Dr Hannah Price @Physics_uniBham and Professor Michael Tarbutt @ImperialPhysics: https://t.co/q5QXxdax3O”

Twitter
James Webb telescope's MIRI instrument goes super-cold #JamesWebb #MIRI #ultracold #physics
https://www.bbc.com/news/science-environment-61086170
James Webb telescope's MIRI instrument goes super-cold

The UK-assembled instrument on Hubble's successor reaches a decidedly chilly -267C in space.

BBC News