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Strong converse theorems in quantum information theory

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One of the fundamental tasks in quantum information theory is to establish the capacity of noisy quantum channels, that is, the maximum rate at which information can be transmitted from one party to another over the channel with vanishing error. The strong converse theorem addresses the optimality of this rate, in proving that the error goes to its maximum value at rates above the capacity. The question of proving a strong converse theorem for the transmission of various types of information over quantum channels has been a primary focus of recent research, with the introduction of new proof techniques. In this seminar we introduce the above notions in detail and concentrate, in particular, on the question of proving a strong converse theorem for quantum information transmission.

This talk is part of the CQIF Seminar series.

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