Quantum process tomography of single photon quantum channels with controllable decoherence
A. Shaham, H. S. Eisenberg
TL;DR
This paper experimentally characterizes single photon polarization quantum channels with controllable decoherence, using quantum process tomography to compare different depolarizing configurations and validate theoretical models.
Contribution
It introduces a method to control and characterize decoherence in single photon channels using birefringent crystals and wave-plates, validated by high-fidelity quantum process tomography.
Findings
High fidelity between experimental results and theoretical predictions
Effective control of decoherence properties in quantum channels
Comparison of two depolarizing configurations
Abstract
We characterized unital quantum channels of single photon polarization qubits. The channels are composed of two birefringent crystals and wave-plates, where their decoherence properties are controlled. An experimental comparison between two different depolarizing configurations was performed using a quantum process tomography procedure. The results are with a high fidelity to the theoretical predictions.
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