Testing the effects of gravity and motion on quantum entanglement in space-based experiments

Understand

We propose an experiment to test the effects of gravity and acceleration on quantum entanglement in space-based setups.

• We show that the entanglement between excitations of two Bose-Einstein condensates is degraded after one of them undergoes a change in the gravitational field strength.
• This prediction can be tested if the condensates are initially entangled in two separate satellites while being in the same orbit and then one of them moves to a different orbit.
• We show that the effect is observable in a typical orbital manoeuvre of nanosatellites like CanX4 and CanX5.