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Australian scientists have successfully performed a famous experiment to prove a quantum physics prediction that reality does not exist until it is measured.
Physicists at The Australian National University (ANU) have conducted John Wheeler's delayed-choice thought experiment, which involves a moving object that is given the choice to act like a particle or a wave.
Wheeler's experiment then asks - at which point does the object decide?
Common sense says the object is either wave-like or particle-like, independent of how we measure it. But quantum physics predicts that whether you observe wave like behaviour (interference) or particle behaviour (no interference) depends only on how it is actually measured at the end of its journey.
This is what the ANU team found in its experiment.
"It proves that measurement is everything. At the quantum level, reality does not exist if you are not looking at it," said Associate Professor Andrew Truscott from the ANU Research School of Physics and Engineering.
"The atoms did not travel from A to B. It was only when they were measured at the end of the journey that their wave-like or particle-like behaviour was brought into existence," he said.
In quantum computing, a qubit (/ˈkjuːbɪt/) or quantum bit is a unit of quantum information—the quantum analogue of the classical bit. A qubit is a two-state quantum-mechanical system, such as the polarization of a single photon: here the two states are vertical polarization and horizontal polarization. In a classical system, a bit would have to be in one state or the other. However quantum mechanics allows the qubit to be in a superposition of both states at the same time, a property which is fundamental to quantum computing.
What if you are blind and cannot therefore see. Does that not suggest that nothing exists including the self yet the self exists whether it can see or not, does it not.
originally posted by: neoholographic
Once you take away the blind, materialist ASSUMPTION that a material particle can be in superposition and you accept that this superposition is non physical information of the wave function of observable states, then it makes perfect sense.
originally posted by: micpsi
This experimental confirmation of the supposition principle postulated in quantum mechanics has NOTHING to do with the holographic model of the universe. Nor does it mean anything as simplistic as the conclusion that reality does not exist until it is observed. Rather, it means that the classical notion of a unique reality that exists independent of how it is observed fails for quantum objects. That's as far as it goes. All the silly hype that is being reported in science magazines and blogs on the internet should be ignored as hyperbole, misrepresentation and distortion. Macroscopic reality is NOT a quantum system, so stop making the mistake that it can be regarded as such.
Are we living in a HOLOGRAM? For the first time, scientists prove strange theory could be true in 'realistic models' of our universe
Holographic principle suggests there is a 2D surface that we can't see
This surface contains all the information needed to describe 3D objects
Since 1997, equations used to show holographic principle could be true have been based on models that contradict theories about our universe
Now scientists have shown how it works in universe that is largely flat
To test the theory, scientists spent three years creating gravitational equations that do not require exotic spaces and, instead, live in a flat space. 'If quantum gravity in a flat space allows for a holographic description by a standard quantum theory, then there must by physical quantities, which can be calculated in both theories – and the results must agree', says Grumiller.
They said one key feature of quantum mechanics –quantum entanglement – had to appear in the more realistic model of our universe.
When quantum particles are entangled, they cannot be described individually.
They form a single quantum object, even if they are located far apart.
There is a measure for the amount of entanglement in a quantum system, called 'entropy of entanglement'.
The team showed that this entanglement takes the same value in both a flat quantum gravity model and in a low dimension quantum field theory.
'This calculation affirms our assumption that the holographic principle can also be realised in flat spaces,' said Max Riegler at the Technology University of Vienna.
'It is evidence for the validity of this correspondence in our universe', says Max Riegler (TU Wien).
'The fact that we can even talk about quantum information and entropy of entanglement in a theory of gravity is astounding in itself, and would hardly have been imaginable only a few years back,' added Grumiller.
'That we are now able to use this as a tool to test the validity of the holographic principle, and that this test works out, is quite remarkable.'