X-Message-Number: 17301
From: 
Date: Fri, 17 Aug 2001 08:57:26 EDT
Subject: Quantum brains

Some years ago, Roger Penrose has put forward the idea of quantum level 
working brains. The evidences are at least inconclusive for biological brains 
in their actual form. 

That not preclude the possibility of "brain-like" quantum computers or 
quantum information processing devices. One particular case would be a 
quantum neural network. 

Another possibility steems from the nano-repair technology. As pointed 
before, that technology implies a very powerful computing capability on nano 
devices and that power is not possble with classical computers. The only 
solution is a simple, one or two qbits QC on each nano repair device and an 
entanglement between these qbits on many separate nano systems so they form a 
single powerful quantum computer.

The implicit assuption is that, when the repair task is completed, the nano 
systems are discarded one way or another. Here, I would suggest that they 
could remain in the body and watch for continuous repair jobs.

In the brain, they could be connected with normal neuron activity and form 
the interface between a classical, biological brain and a quantum 
computer-neural network. The processing power would be enormously boosted by 
that system. In fact, all nano devices in the body, could be exploited by the 
quantum neural network, there is no reason to limit that possibility to nano 
systems in the brain.

I see two main effects of that technology beyond more "brainy men": 
1/ The possibility to have more species with the brain power to run a 
technological civilization and:
2/ The possibility of "technological communism", with quantum entanglement of 
brain power expanding on more than one person.

There is a paper on quantum neural networks:

Paper: quant-ph/0107012
From: Mikhail Altaisky <>
Date: Tue, 3 Jul 2001 13:16:38 GMT   (3kb)
Date (revised v2): Thu, 5 Jul 2001 07:58:54 GMT   (3kb)

Title: Quantum neural network
Authors: M.V.Altaisky
Comments: LaTeX, 4 pages
\\
  It is suggested that a quantum neural network (QNN), a type of artificial
neural network, can be built using the principles of quantum information
processing. The input and output qubits in the QNN can be implemented by
optical modes with different polarization, the weights of the QNN can be
implemented by optical beam splitters and phase shifters.
\\

It can be found on http://xxx.lanl.gov quant-ph arXiv server.

Yvan Bozzonetti.

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