Self-testing in parallel with CHSH
Department of Electrical Engineering and Computer Science, Queensland University of Technology
|Published:||2017-04-25, volume 1, page 1|
|Citation:||Quantum 1, 1 (2017).|
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Self-testing allows classical referees to verify the quantum behaviour of some untrusted devices. Recently we developed a framework for building large self-tests by repeating a smaller self-test many times in parallel. However, the framework did not apply to the CHSH test, which tests a maximally entangled pair of qubits. CHSH is the most well known and widely used test of this type. Here we extend the parallel self-testing framework to build parallel CHSH self-tests for any number of pairs of maximally entangled qubits. Our construction achieves an error bound which is polynomial in the number of tested qubit pairs.
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