Atom laser that can run forever built by physicists after breakthrough

University of Amsterdam physicists have made a sustainable Bose-Einstein Condensate, and thus an atom laser that can run forever.

@AdamHuntTT
Published Sun, Jun 19 2022 7:14 AM CDT

A study on the atom laser titled "Continuous Bose-Einstein condensation" has been published in the journal Nature.

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Conventional lasers produce a coherent wave of light, meaning all of the light vibrates in a synchronized fashion. As described by the wave-particle duality from quantum mechanics, the behavior of particles like atoms can be described with the classical understanding of both particles and waves. Therefore, lasers can also be built from atoms, naturally dubbed 'atom lasers.'

A Bose-Einstein Condensate (BEC) is when matter particles, like atoms, condense into a coherent wave, synchronized like a light in a typical laser. However, this can typically only occur at temperatures roughly a millionth of a degree warmer than absolute zero, making most BECs short-lived. Now, physicists from the University of Amsterdam have devised a process to sustain BECs, and produce a continual atom laser.

"In previous experiments, the gradual cooling of atoms was all done in one place. In our setup, we decided to spread the cooling steps not over time, but in space: we make the atoms move while they progress through consecutive cooling steps. In the end, ultracold atoms arrive at the heart of the experiment, where they can be used to form coherent matter waves in a BEC. But while these atoms are being used, new atoms are already on their way to replenish the BEC. In this way we can keep the process going-essentially forever," explained Florian Schreck, the team leader.

You can read more from the study here.

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Adam grew up watching his dad play Turok 2 and Age of Empires on a PC in his computer room, and learned a love for video games through him. Adam was always working with computers, which helped build his natural affinity for working with them, leading to him building his own at 14, after taking apart and tinkering with other old computers and tech lying around. Adam has always been very interested in STEM subjects, and is always trying to learn more about the world and the way it works.

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