Zero-entropy encoders and simultaneous decoders in identification via quantum channels

Zero-entropy encoders and simultaneous decoders in identification via quantum channels

Seminar author:Pau Colomer Saus

Event date and time:03/14/2024 04:00:pm

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We will revisit the problem of identification via quantum channels but now with the additional restriction that the message encoding must use pure quantum states, rather than general mixed states. Together with the previously considered distinction between simultaneous and general decoders, this suggests a two-dimensional spectrum of different identification capacities, whose behaviour could a priori be very different. We will analyze their properties, ending up with three linearly ordered double-exponential and different identification capacities. https://arxiv.org/abs/2402.09116