Propagation of spatially entangled qudits through free space

Details Propagation of spatially entangled qudits through free space Propagation of spatially entangled qudits through free space

2006-05-29

arxiv.org/abs/quant-ph/0605232v1

Physical Review A 73, 032340 (2006)

Physics

Quantum Physics

5 Pages, 4 Figures, REVTeX4

Scientific paper

10.1103/PhysRevA.73.032340

We show the propagation of entangled states of high-dimensional quantum systems. The qudits states were generated using the transverse correlation of the twin photons produced by spontaneous parametric down-conversion. Their free-space distribution was performed at the laboratory scale and the propagated states maintained a high-fidelity with their original form. The use of entangled qudits allow an increase in the quantity of information that can be transmitted and may also guarantee more privacy for communicating parties. Therefore, studies about propagating entangled states of qudits are important for the effort of building quantum communication networks.

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