Taming Entanglement
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Using a spontaneous parametric-downconversion source of photon pairs, we are working towards the creation of arbitrary 2-qubit quantum states with high fidelity. Currently, all physically allowable combinations of polarization entanglement and mixture can be produced, including maximally-entangled mixed states. The states are experimentally measured and refined via computer-automated quantum-state tomography, and this system has also been used to perform single-qubit and ancilla-assisted quantum process tomography.
7 pages, 5 Figures. To appear in the Proceedings of the 6th International Conference on Quauntum Communication, Measurement and Computing
7 pages, 5 Figures. To appear in the Proceedings of the 6th International Conference on Quauntum Communication, Measurement and Computing