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The Will Lab investigates quantum systems of ultracold atoms and molecules. We cool atoms and molecules to ultracold temperatures close to above absolute zero - reaching the coldest temperatures allowed by nature. At these temperatures, the behavior of particles is determined by the laws of quantum mechanics. Using the precision tools of atomic physics, we have full control over the quantum state of each particle and the interactions between them. 

We work towards single atom and single molecule and create novel many-body quantum systems, and perform quantum simulations of strongly interacting matter. Our research program focusses on fundamental questions in many-body quantum physics, quantum simulation, and quantum optics, and contributes to the development of modern quantum technologies. For more details go to Research.

Recent News

June 3, 2024

Bose-Einstein condensate of polar molecules out in Nature!

Link to manuscript Nature (2024) 

Link to Press Release  

Link to Nature News

Link to Physics Today

December 19, 2023

Bose-Einstein condensate of dipolar molecules!

Our latest preprint is out - we report the first creation of a Bose-Einstein condensate of dipolar ground state molecules. We evaporatively cool a gas of NaCs molecules from 700 nK to 6 nK above absolute zero. At this point the molecular gas forms a Bose-Einstein condensate, the coldest molecular gas to date. The lifetime of the BEC is ~2 sec. This becomes possible with an enhanced collisional shielding method that suppresses loss by 4 orders of magnitude. Thanks so much to the entire NaCs team - past and present members - for all the amazing work on this monumental project! https://arxiv.org/abs/2312.10965

April 30, 2024

Atoms trapped in metasurface tweezer arrays

In collaboration with the Nanfang Yu Lab at Columbia, we have developed a technique to trap atoms in optical tweezer arrays, generated via holographic metasurfaces. The picture shows a flouresence image of Sr atoms,  cooled and trapped in a metasurface tweezer array with a mean tweezer spacing of 3 um. The technique allows creation of atom arrays with arbitrary geometry and high laser power. Congrats to the entire TweeSr and Yu Lab Team on this wonderful achievement! 

December 1, 2023

Moore Foundation supporting our ultracold molecules effort

We are extremely grateful that the Betty and Gordon Moore Foundation is supporting our effort on ultracold dipolar molecules, in particular the creation and investigation of Bose-Einstein condensates of dipolar molecules. Thank you to the entire NaCs team - past and current members - for driving this project forward with so much dedication and energy! 

Read more here: Sebastian Will Is on a Quest for Ultracold Quantum Control

Funding

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Videos

Our lab is featured in recent videos:

The Coldest Place in New York

Nobel Prize 2022 - Quantum Entanglement

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