The Einstein-Podolsky-Rosen (EPR) paradox has puzzled physicists for nearly a century. Recently, a team of international researchers has found a way to scale up the EPR paradox to the macroscopic level, bringing the famous thought experiment into reality. This breakthrough could have far-reaching implications for quantum mechanics, and our understanding of the universe.

The EPR paradox, first proposed by Einstein, Podolsky, and Rosen in 1935, states that two particles can be entangled so that a measurement of one affects the other, regardless of distance. This holds true even if the particles are separated by a large distance. This seems to contradict the accepted theories of quantum mechanics, and has been a source of debate ever since.

Now, the team of researchers has found a way to scale up the EPR paradox to the macroscopic level, using two superconducting circuits coupled together. By cooling the circuits to temperatures near absolute zero, they were able to measure the correlations between the two circuits and show that they were indeed entangled. This is the first time the EPR paradox has been demonstrated on a macroscopic scale, and could have far-reaching implications for physics and our understanding of the universe.

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source: Phys.org