Acceleration-assisted entanglement harvesting and rangefinding

Understand

We study entanglement harvested from a quantum field through local interaction with Unruh-DeWitt detectors undergoing linear acceleration.

• The interactions allow entanglement to be swapped locally from the field to the detectors.
• We find an enhancement in the entanglement harvesting by two detectors with anti-parallel acceleration over those with inertial motion.
• This enhancement is characterized by the presence of entanglement between two detectors that would otherwise maintain a separable state in the absence of relativistic motion (with the same distance of closest approach in both cases).