From Imperial Wiki
An ansible is a communication device that allows interstellar communication in real time via an entanglement effect. Activity on one ansible is duplicated on a "receiving" ansible simultaneously, regardless of range.
- The Left Hand of Darkness by Ursula K. LeGuin
- The Vatta's War series by Elizabeth Moon
- Ender's Game by Orson Scott Card
- "Quantum entanglement communicators" in Mass Effect