Spectral Polarization and Spectral Phase Control of Time and Energy Entangled Photons
arXiv:quant-ph/0604113 · doi:10.1103/PhysRevA.75.043804
Abstract
We demonstrate a scheme to spectrally manipulate a collinear, continuous stream of time and energy entangled photons to generate beamlike, bandwidth-limited fuxes of polarization-entangled photons with nearly-degenerate wavelengths. Utilizing an ultrashort-pulse shaper to control the spectral phase and polarization of the photon pairs, we tailor the shape of the Hong-Ou-Mandel interference pattern, demonstrating the rules that govern the dependence of this interference pattern on the spectral phases of the photons. We then use the pulse shaper to generate all four polarization Bell states. The singlet state generated by this scheme forms a very robust decoherence-free subspace, extremely suitable for long distance fiber-optics based quantum communication.
arXiv comment5 pages, 3 figures
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- Amplitude and phase modulation of time-energy entangled two-photon states
- Broadband frequency mode entanglement in waveguided PDC
- Time-resolved spectroscopy with entangled photons
- Spatial, spectral and temporal coherence of ultra-intense twin beams
- Demonstration of a programmable source of two-photon multiqubit entangled states
- Randomly poled crystals as a source of photon pairs
- Octave-Spanning Phase Control for Single-Cycle Bi-Photons
- Enhancement of broadband entangled two-photon absorption by resonant spectral phase flips
- Engineering of Hong-Ou-Mandel interference with effective noise