The relevance of random choice in tests of Bell inequalities with atomic qubits

TL;DR

This paper identifies a loophole in Bell inequality tests with atomic qubits caused by rotation angle errors and proposes a condition to close this loophole, enhancing the reliability of such quantum tests.

Contribution

It introduces a sufficient condition to eliminate the rotation angle error loophole in Bell tests with atomic qubits, improving experimental robustness.

Findings

Loophole exists due to rotation angle errors in atomic qubit experiments.

A sufficient condition to close the loophole is derived.

Enhances the reliability of Bell inequality tests with atomic qubits.

Abstract

It is pointed out that a loophole exists in experimental tests of Bell inequality using atomic qubits, due to possible errors in the rotation angles of the atomic states. A sufficient condition is derived for closing the loophole.