things to do: quantum computing and quantum mechanics

quantum computing and quantum mechanics
---------------------------------------
 * find "Persistent qubit" stuff---decoherence-protection is *the*
   big issue for practical QC!

 * producing any desired energy by chaining (unit-circle-weighted)
   successive states of any starting psi?
   ---does this make it easier to compute the energy eigenstates of say
      an atom, or is it a sham?!

 * ontology of QFT. ---what are the two Bohmian ways (bosons=particles/waves),
   and if we delete the trajectory attempt, do we still have those two
   possible ontologies?

 * pure cats by dissipation?! ---Stirling 1994 (paper); La Zouche 1995
                                 (on web, IC l.opt.sp. section).


 * http://vesta.physics.ucla.edu/~smolin/cgi-bin/uncompress_ps_cgi?papers/thesis.ps
						----John Smolin's PhD theses!

 * Josza ---rec. by ts9 (q.comp? twistors?)

 * Deutsch (Phys Rev D 15/11/1991) on CTCs giving quantum cloning: OK, he says
	explicitly this is non-unitary, but surely even going to density
	matrices in the ontology *still* doesn't make it "linear" or "unitary"
	or whatever the analogous concept is for density matrices?

 * Lov K Grover, "A fast quantum mechanical algorithm for database search".
	In Proceedings of the Twenty-Eighth Annual ACM Symposium on
	Theory of Computing, pages 212-219, Philadelphia, Pennsylvania,
	22-24 May 1996.
	---is this in IC library?
	(reference found on SciAm website:
	http://www.sciam.com/explorations/091696explorations.html)

 * relativistic measurement theory from d'Espagnat's "Veiled Reality":
	* G N Fleming, in The Mini-Course and Workshop on Fundamental Physics,
	  Univ. de Puerto Rico, 1985 ("Fleming hyperplanes")
	* I Bloch, Phys Rev 156 p1377 (1967) --prob. rather superficial
	* Y Aharonov & D Z Albert, Phys Rev D 21 p3316 (1980), and
	  Phys Rev D 24 p359 (1982): debunking of past light cone collapse
	* Y Aharonov & D Z Albert, Phys Rev D 29 p228 (1984):
	  covariant measurement process by functionals on spacelike slices!
	* P Ghose in Bell's Theorem and the Foundations of Physics, Proceedings
	  of the International Conference in Memory of John Bell held in
	  Cesena, 7-10 October 1991 (World Scientific, Singapore 1993):
	  explicit singlet pair example of functionals on spacelike slices!

 * John Scholes's recommended book:
	Paul Teller, An interpretive introduction to quantum field theory,
	170pp, Princeton 1995.

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