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arXiv · 1003.0484

Quantum dense coding without entanglement

W. T. Buttler·S. K. Lamoreaux·J. R. Torgerson
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Abstract

We describe a quantum cryptography protocol with up to twenty four-dimensional ($\mathcal{D} =4$) states generated by a polarization-, phase- and time-encoding transmitter. This protocol can be experimentally realized with existing technology, drawing from time-encoded and polarization-encoded systems. The protocol is error tolerant and has a quantum bit-rate of 2 per transmission/detection, which when combined with state detection efficiency yields a qubit efficiency of up to 1 or double that of BB84-{\it like} protocols.

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W. T. Buttler, S. K. Lamoreaux, J. R. Torgerson. 2010-05-04. Quantum dense coding without entanglement. https://arxiv.org/abs/1003.0484

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