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We present our recent development of fiber-optic technology for all-optical switching and routing of entangled photons at high speeds, with minimal loss and added in-band noise, and—most importantly—without disturbing the photons' quantum state.
We model fiber parametric entangled photon sources for use in quantum key distribution applications. Effects of Raman scattered photons are evaluated and are found to be manageable when appropriately detuned optical filters are employed.
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