Experimental demonstration of a heralded entanglement source
arXiv:1007.2510 · doi:10.1038/nphoton.2010.123
Abstract
The heralded generation of entangled states is a long-standing goal in quantum information processing, because it is indispensable for a number of quantum protocols. Polarization entangled photon pairs are usually generated through spontaneous parametric down-conversion, but the emission is probabilistic. Their applications are generally accompanied by post-selection and destructive photon detection. Here, we report a source of entanglement generated in an event-ready manner by conditioned detection of auxiliary photons. This scheme benefits from the stable and robust properties of spontaneous parametric down-conversion and requires only modest experimental efforts. It is flexible and allows the preparation efficiency to be significantly improved by using beamsplitters with different transmission ratios. We have achieved a fidelity better than 87% and a state preparation efficiency of 45% for the source. This could offer promise in essential photonics-based quantum information tasks, and particularly in enabling optical quantum computing by reducing dramatically the computational overhead.
24 pages, 4 figures, 1 table
References in corpus (8)
- Silica-on-Silicon Waveguide Quantum Circuits
- Entangled Photon Pairs from Semiconductor Quantum Dots
- Resource-efficient linear optical quantum computation
- Manipulating multi-photon entanglement in waveguide quantum circuits
- Memory-built-in quantum teleportation with photonic and atomic qubits
- Heralded generation of entangled photon pairs
- Multiphoton path entanglement by non-local bunching
- Heralded generation of multiphoton entanglement
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