| תקציר: |
Time-energy entangled bi-photons (or broadband squeezed light in the continuous version), is in many ways
the 'black sheep of the family' in quantum information. Although broadband squeezed light is easily
produced with very high optical flux, and demonstrates extreme nonclassical behavior, it is rarely used in
quantum information, mainly because of the inability to efficiently detect it with standard photo-detectors
and homodyne techniques.
I will present our measurement scheme for broadband squeezed light and time energy entangled bi-photons
that is based on quantum interference between the generation amplitudes of bi -photons in two separated
nonlinear media. Using an optical nonlinear medium as the homodyne device, we demonstrated direct
squeezing detection for ultra-broadband two-mode squeezed light (~80nm bandwidth and ~140THz signalidler separation), lifting the inherent bandwidth limitation of the standard homodyne measurement with
photo-detectors. |
