Enhanced Precision in Entangled Quantum Clocks with Phase Estimation Algorithm

TL;DR

This paper introduces a quantum clock protocol using phase estimation and entanglement to achieve higher precision in relativistic time comparison, surpassing traditional limits.

Contribution

It extends the entangled quantum clock framework by integrating a quantum phase estimation algorithm for direct proper-time difference measurement.

Findings

Uncertainty scales inversely with the number of clocks, surpassing standard limits.

Employs highly entangled multi-clock states for enhanced precision.

Provides a systematic method for high-precision relativistic time comparison.

Abstract

We present an enhanced entangled quantum clock protocol that incorporates a quantum phase estimation algorithm to directly estimate proper-time differences as an unknown phase. By employing highly entangled multi-clock states, the achievable uncertainty scales inversely with the total number of quantum clocks, surpassing the standard projection-noise limit. This approach extends the original EQC framework and provides a systematic method for high-precision relativistic time comparison.