Generation of a highly-phase-sensitive polarization-squeezed N-photon state by collinear parametric down-conversion and coherent photon subtraction
نویسنده
چکیده
It is shown that a highly-phase-sensitive polarization-squeezed 2n−1 -photon state can be generated by subtracting a diagonally polarized photon from the 2n photon component generated in collinear type II downconversion. This polarization wedge state has the interesting property that its photon number distribution in the horizontal and vertical polarizations remains sharply defined for phase shifts of up to 1/n between the circularly polarized components. Phase shifts at the Heisenberg limit are therefore observed as nearly deterministic transfers of a single photon between the horizontal and vertical polarization components.
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