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Beijing time on January 6, 2014, the Huffington Post reported that physicists have recently proposed a new way to observe the world's most bizarre substance called Bose-Einstein Condensate ( Bose-Einstein condensate) super cold, super calm gas. Although scientists had previously been able to see this rare gas, they shot a Bose-Einstein Condensate (BEC) (which is based on Albert Einstein and Indian theorist Satyandra Dina The name of Satyendra Nath Bose tends to destroy it because it adds extra energy from light. "Absorption of a single photon is enough to destroy it," said study lead author Michael Hush, a physicist at the University of Nottingham in the United Kingdom.
By creating a new computer model, researchers found a way to transfer heat on another route and keep the BECs cool—even during long imaging periods. In principle, this method "can achieve BEC fuzzy imaging, during which we can directly observe the BEC and even use feedback to control it." Hash said. "It is really exciting to be able to research a quantum object that is near absolute zero on the spot." The study was published in the November 28th issue of the Journal of New Physics.
Bose-Einstein condensates are atoms or other particles, such as photons, that cool to near absolute zero. The atoms are so sluggish that their behavior is very weird, like a single drop of water. The slow movement of particles means that scientists can easily trace and study atomic processes such as atomic rotations by studying Bose-Einstein condensates.
Over the past decade or so, physicists have used BECs to observe BECs using off-resonance photons, a type of laser imaging that diverts its energy away from supercooled atoms rather than adding heat. But even if this method can only succeed a few times, it will eventually destroy the condensate after obtaining a few images.
To improve this imaging technology, Hach and his colleagues established a sophisticated computer model capable of stimulating the eccentric behavior of polarized light and Bose-Einstein condensates. This model reveals unprecedented heating effects caused by off-resonance imaging.
"This particular discovery presented in the article was initially considered a minor mistake in our program," said Hach. "We think this is because a simpler description of BECs does not predict the existence of this heating." Through their model, the researchers invented a filter that removes the heating effect and stores additional energy for use in This will help keep the atoms cool for longer periods of time in the siege and cooling condensate coils. Now, when a curious audience wants to sit around watching atoms, such imaging technology will send more energy to the cooled coils, allowing the condensate to cool even more. The next step is to test this filter in a real-world experiment.
"Once this isolates the object that caused the heat, it becomes relatively easy to generate feedback and correct it," said Hach. “The results like this seem very promising, which makes us hope that the experimental demonstration of BEC feedback will become possible in the near future.†(Compilation/ Yan Yan Liu Xing)
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