Loss of entanglement in quantum mechanics due to the use of realistic measuring rods

TL;DR

This paper demonstrates that fundamental gravitational effects impose limits on entanglement in quantum systems when using realistic measuring devices, impacting quantum communication and measurement theory.

Contribution

It introduces a gravitationally motivated limit on quantum entanglement due to realistic measurement constraints, linking gravity and quantum measurement.

Findings

Gravitational effects limit entanglement levels

Implications for long-distance quantum teleportation

Relevance to the quantum measurement problem

Abstract

We show that the use of real measuring rods in quantum mechanics places a fundamental gravitational limit to the level of entanglement that one can ultimately achieve in quantum systems. The result can be seen as a direct consequence of the fundamental gravitational limitations in the measurements of length and time in realistic physical systems. The effect may have implications for long distance teleportation and the measurement problem in quantum mechanics.