Thursday, January 1, 2009

Do You See What I See?

"The realization of this experiment opens interesting perspectives for controlling quantum systems. Instead of freezing their evolution, repeated measurements could provide information used to channel them towards tailored quantum states by active feed-back operations." - Bernu et al., Phys. Rev. Lett., 101: 180402 (2008). (here)

Don't look now, but something got me thinking...

When last we discussed how I was going to take a wild stab at modeling physics to include 5 dimensions of experience, I was fixated on the quantum zeno effect, which is perhaps the most direct example of a physical system being impacted by measurement. (I am still absorbing information on QZE and the particular observations and problems that gave rise to the idea of quantum decoherence. This will take awhile.)

While reading this blogpost, my thoughts went to another article - one on non-local observation. In this experiment "[t]he experimenter asked each participant either to imagine that he or she could intuitively sense the presence of the photons in a specific area of the interferometer... or to withdraw that intuitive perception and allow the photons to pass through the same area unimpeded." (My emphasis.) In this experiment, the participants were not directly observing the laser/Michelson interferometer system. The hypothesis was that if "such [non-local] observation were possible, it would theoretically perturb the photon's quantum wave functions and change the pattern of light produced by the interferometer." A significant decrease in overall level of illumination was present in the non-local observation condition, as predicted by the behavior of the same system when the interference pattern has collapsed due to attempts to gain information about the path of the photon.

Is quantum decoherence compatible with non-local observation? Or would it make more sense to map observation effects (like QZE) onto certain cognitive parameters associated with observation? It's interesting to me that in Radin's study the "result was primarily due to nine sessions involving experienced meditators". This suggests that cognitive attributes of a particular observer are associated with the degree and nature of 'observation' that they can bring to bear on a system. This in turn reminded me of Schmidt's article, discussed lo these many months ago, which also suggests a continuum of observation based on factors such as the 'alertness' of the observer.

And I began to wonder... Where are the studies that map cognitive attributes such as absorption, and neurological properties such as visual cortex activation, onto effects of observation such as the QZE?

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