Quantum collapse can be undone

Last updated on: August 11, 2008 at 7:00 pm by Desh Kapoor

Quantum collapse can be undone 2008-08-11T19:00:55-05:00 Desh Kapoor

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Our Observation collapses the wave and we can have a particle instead. At least that much is a certainty for scientists. Of course, the question that has always remained is how does the quantum world and the physical world so different in its appearance.

There was another point. That as soon as we measure the wave position, we force its collapse. So, the question is can it be undone? From the entire “business” of nirvana or enlightenment proliferated by the mystics, it seems that it should happen! Now, the scientists have found a way that if the measurement can be done just that much.. .then the partial collapse can be undone.

In the latest issue of Nature News, Postdoctoral Fellow Nadav Katz explains how his team put the idea to the test and found that, indeed, he is able to take a “weak” measurement of a quantum particle, which triggered a partial collapse. Katz then “undid the damage we’d done,” altering certain properties of the particle and performing the same weak measurement again. The particle was returned to its original quantum state just as if no measurement had ever been taken.

So, even the collapse – albeit the partial one as yet – is also not a permanent state (which makes sense – as that is exactly what spiritualists keep harping on! In fact the only permanent state is the uncollapsed one. Let’s get to that now.

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