Realizing a variable isotropic depolarizer
A. Shaham, H. S. Eisenberg
TL;DR
This paper presents a controllable isotropic depolarizer for single photons, enabling testing of quantum communication protocols by accurately simulating depolarization effects.
Contribution
The authors design and experimentally demonstrate a novel depolarizer using birefringent crystals and wave plates with verified quantum process tomography.
Findings
Depolarizer achieves tunable depolarization levels.
Experimental results match theoretical predictions.
Useful for testing quantum communication systems.
Abstract
We demonstrate an isotropic depolarizing channel with a controllable degree of depolarization. The depolarizer is composed of four birefringent crystals and half-wave plates. Quantum process tomography results of the depolarization effect on single photons agree well with the theoretical prediction. This depolarizer can be used to test quantum communication protocols with photons.
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