-----Original Message----- From: Terry Blanton Jones Beene wrote:
> "We show that trapped ions can be used to simulate a highly symmetrical > Hamiltonian with eigenstates naturally protected against local sources of > decoherence. > The problem I am having with this is how did these bosons achieve a constant relative phase initially and what would be the "local sources of decoherence"? Energetic fermions? Good question, and I have been thinking about this very point. The "local sources", at least as in my understanding - but transposed to Ni-H context would be 1) uniform nano-cavities, 2) constant heat, and 3) Dicke "lock-in". The last is the most important. A good abstract is: http://en.wikipedia.org/wiki/Lock-in_amplifier However, the last two local sources of decoherence could be combined as a single source of input power. An ideal device for this would be a terahertz laser of a wavelength corresponding to the trigger temp - i.e. 350 C. However, these lasers are new and not available to most of us in small labs, but they could be available soon. An alternative input power source (as a less-expensive workaround) could be an array of IR LEDS, such as several hundred red LEDs focused and filtered to a semi-coherent beam. For instance, the longer WL LED light was filtered down to the correct (longer) wavelength of several microns and focused. This is doable now I suspect but it depends on finding the right optical filter. I suspect polarization would help. The correct initial conditions to start the gainful process would be self-generated from random - due to Dicke superradiant lock-in of the main Hamiltonian energy components (with help from the semi-coherent input energy source). This is why the Ni-H effect is hard for some to replicate. It depends now on simulating semi-coherency by other means (and luck). Jones
<<attachment: winmail.dat>>
