[ExI] Psi (no need to read this post you already know what it says)

[scerir]

Will Steinberg:
>A possible method for deducing the entanglement of particles: [...]

To my knowledge the possible (but questionable) role of entanglement in 
physiology (i.e. human eye) has been discussed in very very few papers written 
by *good* physicists. The interest in entanglement depends on recent 
experiments with two macroscopic states (localized in two space-like separated 
sites) which become non-locally correlated having interacted - in the past - 
with an entangled couple of single-particles (micro-macro entanglement).

Quantum experiments with human eyes as detectors based on cloning via 
stimulated emission
http://arxiv.org/abs/0902.2896
-Pavel Sekatski, Nicolas Brunner, Cyril Branciard, Nicolas Gisin, Christoph 
Simon
Abstract: We show theoretically that the multi-photon states obtained by 
cloning single-photon qubits via stimulated emission can be distinguished with 
the naked human eye 
with high efficiency and fidelity. Focusing on the "micro-macro" situation 
realized in a recent experiment [F. De Martini, F. Sciarrino, and C. Vitelli, 
Phys. Rev. Lett. 100, 253601 (2008)], where one photon from an original 
entangled pair is detected directly, whereas the other one is greatly 
amplified, we show that performing a Bell experiment with human-eye detectors 
for the amplified photon appears realistic, even when losses are taken into 
account. The great robustness of these results under photon loss leads to an 
apparent 
paradox, which we resolve by noting that the Bell violation proves the 
existence of entanglement before the amplification process. However, we also 
prove that there is genuine micro-macro entanglement even for high loss.

Towards Quantum Experiments with Human Eyes Detectrors Based on Cloning via 
Stimulated 
Emission?
http://arxiv.org/abs/0912.3110
-Francesco De Martini
Abstract: We believe that a recent, unconventional theoretical work published 
in Physical Review Letters 103, 113601 (2009) by Sekatsky, Brunner, Branciard, 
Gisin, Simon, albeit 
appealing at fist sight, is highly questionable. Furthermore, the criticism 
raised by these Authors against a real experiment on Micro - Macro entanglement 
recently published in Physical Review Letters (100, 253601, 2008) is found 
misleading and to miss its target.

Quantum superpositions and definite perceptions:envisaging new feasible 
experimental tests
http://arxiv.org/abs/quant-ph/9810028
-GianCarlo Ghirardi
Abstract: We call attention on the fact that recent unprecedented 
technological achievements, in particular in the field of quantum optics, seem 
to open the way to new experimental tests which might be relevant both for the 
foundational problems of quantum mechanics as well as for investigating the 
perceptual processes.