Joe Rongen
May16-06, 05:00 AM
<markwh04@yahoo.com> wrote in message
news:1147474494.901827.205400@v46g2000cwv.googlegr oups.com...
[... details snipped ...]
> In this way, it is seen that a quantum state may be equivalently
> represented by a Wigner function or by a non-negative phase space
> probability distribution. Both yield equivalent information, each form
> being convertible into the other.
A report in "Science", Vol 312, Issue 5770, 7 April 2006,
named: "Generating Optical Schrodinger Kittens for
Quantum Information Processing" Page: 63-64 and 83-86
maybe of practical interest here.
"We present a detailed experimental analysis of a free-
propagating light pulse prepared in a "Schrodinger kitten"
state, which is defined as a quantum superposition of
"classical" coherent states with small amplitudes. This
kitten state is generated by subtracting one photon from a
squeezed vacuum beam, and it clearly presents a negative
Wigner function. The predicted influence of the experimental
parameters is in excellent agreement with the experimental
results. The amplitude of the coherent states can be amplified
to transform our "Schrodinger kittens" into bigger Schrodinger
cats, providing an essential tool for quantum information
processing."
news:1147474494.901827.205400@v46g2000cwv.googlegr oups.com...
[... details snipped ...]
> In this way, it is seen that a quantum state may be equivalently
> represented by a Wigner function or by a non-negative phase space
> probability distribution. Both yield equivalent information, each form
> being convertible into the other.
A report in "Science", Vol 312, Issue 5770, 7 April 2006,
named: "Generating Optical Schrodinger Kittens for
Quantum Information Processing" Page: 63-64 and 83-86
maybe of practical interest here.
"We present a detailed experimental analysis of a free-
propagating light pulse prepared in a "Schrodinger kitten"
state, which is defined as a quantum superposition of
"classical" coherent states with small amplitudes. This
kitten state is generated by subtracting one photon from a
squeezed vacuum beam, and it clearly presents a negative
Wigner function. The predicted influence of the experimental
parameters is in excellent agreement with the experimental
results. The amplitude of the coherent states can be amplified
to transform our "Schrodinger kittens" into bigger Schrodinger
cats, providing an essential tool for quantum information
processing."