Quantum Entanglement via Superradiance of a Bose–Einstein Condensate

Abstract

We adopt the coherence and builtin swap mechanism in sequential superradiance as a tool for obtaining continuousvariable (electric/magnetic fields) quantum entanglement of two counterpropagating pulses emitted from the two endfire modes. In the firstsequence, endfire modes are entangled with the side modes. In the second sequence, this entanglement is swapped to in between the two opposite endfire modes. Additionally, we also examine the photon number correlations. No quantum correlations is observed in this variable.