Entanglement-assisted perfect discrimination of quantum measurements

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Centre of New Technologies UW

January 21, 2021 3:15 PM


One of the important problems in the field of quantum information is the discrimination of different physical processes. In particular, we investigate the single-shot measurement discrimination problem using two different approaches. One of the approaches is based on the single quantum systems, whereas in the other one we use bipartite entangled quantum systems. Furthermore, we construct the sets of measurements that are perfectly distinguishable using a bipartite entangled system, but not perfectly distinguishable with a single quantum system. In addition, we prove that any advantage in a measurement distinguishability problem over single systems is a necessary criterion for quantum steering. Along the same line, we show that any pure two-qubit entangled state is advantageous in a measurement discrimination task over the one-qubit systems.


Zoom meeting details 

Topic: Quantum Information and Quantum Computing Working Group
Time: January 21, 2021, 3:15 PM Warsaw
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Meeting ID: 96294497969
Passcode: 729533

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