I Large scale entanglement experiment

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The discussion centers on a large-scale entanglement experiment involving mechanical degrees of freedom, which is notable for its scale compared to previous experiments. Participants mention that entanglement experiments with Josephson junctions have been conducted on a larger scale than the current experiment. There is a request for information on larger entanglement experiments and their potential applications. Several recent papers are shared to provide additional context and research on the topic. The conversation emphasizes the significance of exploring practical applications of entanglement phenomena.
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Given below is the research paper and a related video to understand the phenomenon. This experiment is a proof of large scale quantum entanglement can be possible now.
This is the paper and here is the video. As far as I know, this is an entanglement related experiment done so far in such a large scale. I want to know whether entanglement related experiment has been done so far on a larger scale and what can be the possible use of such phenomenons.
 
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Entanglement experiments with Josephson junctions have been done for some time now; those are larger, IIRC, than the drumheads in this experiment.

The interesting part of this experiment is that the degrees of freedom being entangled are mechanical.
 
PeterDonis said:
Entanglement experiments with Josephson junctions have been done for some time now; those are larger, IIRC, than the drumheads in this experiment.
Kindly share links here.
 
I am now interested in practical applications about such phenomenon.
 

Thread 'Angular Momentum Vector and Its Magnitude'

For the quantum state ##|l,m\rangle= |2,0\rangle## the z-component of angular momentum is zero and ##|L^2|=6 \hbar^2##. According to uncertainty it is impossible to determine the values of ##L_x, L_y, L_z## simultaneously. However, we know that ##L_x## and ## L_y##, like ##L_z##, get the values ##(-2,-1,0,1,2) \hbar##. In other words, for the state ##|2,0\rangle## we have ##\vec{L}=(L_x, L_y,0)## with ##L_x## and ## L_y## one of the values ##(-2,-1,0,1,2) \hbar##. But none of these...
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