Polarization ququarts

Details Polarization ququarts Polarization ququarts

2006-02-16

arxiv.org/abs/quant-ph/0602138v1

Physics

Quantum Physics

13 pages, 10 figures

Scientific paper

We discuss the concept of polarization states of four-dimensional quantum systems based on frequency non-degenerate biphoton field. Several quantum tomography protocols were developed and implemented for measurement of an arbitrary state of ququart. A simple method that does not rely on interferometric technique is used to generate and measure the sequence of states that can be used for quantum communication purposes.

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