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Issue 21/2017 - China has made a breakthrough in the field of one-dimensional quantum liquids

 Last Update: 2022-11-13
 Source: Internet
 Author: User

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Recently, Chinese scientists have obtained for the first time in the world the quantum critical properties of the transformation between classical gases and quantum liquids of a one-dimensional finite temperature multibody system through quantum regulation and measurement of ultracold atoms in the optical lattice, and observed the power-law correlation characteristics
of Latingjie liquids by measuring their phase correlation.
The international authoritative academic journal Physical Review Letters recently published the results
.

The research team creatively built a new experimental system and developed a unique quantum control technology
.
They cleverly prepared a one-dimensional ultracold atomic ensemble by generating a uniform cold atomic potential well, accurately measured the linear density of one-dimensional atoms through high-resolution in situ imaging technology, introduced the atomic refocusing method to measure the spatial distribution of atomic momentum, and observed the unique property of TLL for the first time - the correlation function decays
exponentially with distance.
By analyzing the atomic density distribution data observed by the experiment, they extracted thermodynamic quantities such as system pressure, entropy density, specific heat and compression ratio, and derived the universal laws
they followed.

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