Noise-resistant device-independent certification of Bell state measurements

TL;DR

This paper introduces a noise-resistant, device-independent method to certify the quality of Bell state measurements, enabling reliable self-testing without assumptions on device details or calibration, advancing quantum measurement verification.

Contribution

It presents a novel, noise-resistant certification approach for Bell state measurements that does not rely on device calibration or Hilbert space assumptions.

Findings

Certification is robust against noise.

Applicable to deterministic, partial, or probabilistic measurements.

Facilitates device-independent self-testing in experiments.

Abstract

Device-independent certification refers to the characterization of an apparatus without reference to the internal description of other devices. It is a trustworthy certification method, free of assumption on the underlying Hilbert space dimension and on calibration methods. We show how it can be used to quantify the quality of a Bell state measurement, whether deterministic, partial or probabilistic. Our certification is noise resistant and opens the way towards the device-independent self-testing of Bell state measurements in existing experiments.