Single-Photon Entanglement in the keV Regime via Coherent Control of Nuclear Forward Scattering
arXiv:0904.0504 · doi:10.1103/PhysRevLett.103.017401
Abstract
Generation of single-photon entanglement is discussed in nuclear forward scattering. Using successive switchings of the direction of the nuclear hyperfine magnetic field, the coherent scattering of photons on nuclei is controlled such that two signal pulses are generated out of one initial pump pulse. The two time-resolved correlated signal pulses have different polarizations and energy in the keV regime. Spatial separation of the entangled field modes and extraction of the signal from the background can be achieved with the help of state-of-the-art x-ray polarizers and piezoelectric fast steering mirrors.
minor changes, updated to the final version; 4 pages, 2 figures
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