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Unambiguous State Discrimination

A scheme for measuring quantum information designed to get answers that in principle are never wrong, but at the expense of sometimes getting an answer that is the equivalent of “don't know.” This measurement approach uses an array of detectors which in turn rule out various possible values for an information-bearing pulse of light.

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Quantum physics began with revolutionary discoveries in the early twentieth century and continues to be central in today’s physics research. Learn about quantum physics, bit by bit. From definitions to the latest research, this is your portal. Subscribe to receive regular emails from the quantum world. Previous Issues...

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