Creation of entangled atomic states by an analogue of the Dynamical Casimir effect
Lange, Karsten; Peise, Jan; Lucke, Bernd; Gruber, T; Sala, Arnau; Polls, Artur; Ertmer, Wolfgang; Julia-Diaz, Bruno; Santos, Luis; Klempt, Carsten
Journal article, Peer reviewed
Published version
Åpne
Permanent lenke
http://hdl.handle.net/11250/2614361Utgivelsesdato
2018Metadata
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Sammendrag
If the boundary conditions of the quantum vacuum are changed in time, quantum field theory predicts that real, observable particles can be created in the initially empty modes. Here, we realize this effect by changing the boundary conditions of a spinor Bose–Einstein condensate, which yields a population of initially unoccupied spatial and spin excitations. We prove that the excitations are created as entangled pairs by certifying continuous-variable entanglement within the many-particle output state.