🚀 go-pugleaf

Charles H. Bennett of IBM in 1981 wrote: "Computers may be thought of as
engines for transforming free energy into waste heat and mathematical
work... the essential irreversible step, which prevents the [Maxwell] demon
from breaking the second law [of thermodynamics], is not the making of a
measurement (which in principle can be done reversibly) but rather the
logically irreversible act of erasing the record of one measurement to make
room for the next. ... a tape full of zeros, or ones containing some
pseudorandom sequence such as pi, has fuel value and can be made to do
useful thermodynamic work as it randomizes itself. A tape containing an
alogorithmically random sequence lacks this ability."

A quantum computer acting between a hot negative temperature and a cold
positive temperature has no waste heat.  Experiments must be done to see if
strings of individual quantum events (e.g., detections of polarizations of
a sequence of photons - one at a time in the system - is really random or
pseudorandom with nonlocal hidden variables giving them "fuel value" - that
would, it seems, be sufficient for faster-than-light communication though
not necessary.