Semi-device-independent characterization of quantum measurements under a minimum overlap assumption

Understand

Recently, a novel framework for semi-device-independent quantum prepare-and-measure protocols has been proposed, based on the assumption of a limited distinguishability between the prepared quantum states.

• Here, we discuss the problem of characterizing an unknown quantum measurement device in this setting.
• We present several methods to attack this problem.
• Considering the simplest scenario of two preparations with lower bounded overlap, we show that genuine 3-outcome POVMs can be certified, even in the presence of noise.