A bridge between the single-photon and squeezed-vacuum states.
The two modes of the Einstein-Podolsky-Rosen quadrature entangled state generated by parametric down-conversion interfere on a beam splitter of variable splitting ratio. Detection of a photon in one of the beam splitter output channels heralds preparation of a signal state in the other, which is characterized using homodyne tomography. By controlling the beam splitting ratio, the signal state can be chosen anywhere between the single-photon and squeezed state.
Jain
Nitin
N
Institute for Quantum Information Science, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
Huisman
S R
SR
Bimbard
Erwan
E
Lvovsky
A I
AI
D001330:Electronic Data Processing / Q000295:instrumentation / Q000379:methods*; D004867:Equipment Design; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation / Q000379:methods*; D017785:Photons; D011789:Quantum Theory; D014618:Vacuum