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Updated: Jan 19, 2026

Single-unit In vivo Recordings from the Optic Chiasm of Rat
Published on: April 2, 2010
Implementation of controllable universal unital optical channels
Abstract:
We show that a configuration of four birefringent crystals and wave-plates can emulate almost any arbitrary unital channel for polarization qubits encoded in single photons, where the channel settings are controlled by the wave-plate angles. The scheme is applied to a single spatial mode and its operation is independent of the wavelength and the fine temporal properties of the input light. We implemented the scheme and demonstrated its operation by applying a dephasing environment to classical and quantum single-photon states with different temporal properties. The applied process was characterized by a quantum process tomography procedure, and a high fidelity to the theory was observed.
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1 Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, United States of America
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