Continuous variable quantum key distribution using polarization encoding and post selection

Details Continuous variable quantum key distribution using polarization encoding and post selection Continuous variable quantum key distribution using polarization encoding and post selection

2004-03-08

arxiv.org/abs/quant-ph/0403064v1

Physics

Quantum Physics

submitted

Scientific paper

We present an experimental demonstration of a quantum key distribution protocol using coherent polarization states. Post selection is used to ensure a low error rate and security against beam splitting attacks even in the presence of high losses. Signal encoding and readout in polarization bases avoids the difficult task of sending a local oscillator with the quantum channel. This makes our setup robust and easy to implement. A shared key was established for losses up to 64%.

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