Particle pair creation by inflation of quantum vacuum fluctuations in an ion trap

Abstract

The creation of matter and structure in our universe is currently described by an intricate interplay of quantum field theory and general relativity. Signatures of this process during an early inflationary period can be observed, while direct tests remain out of reach. Here, we study an experimental analog of the process based on trapped atomic ions. We create pairs of phonons by tearing apart quantum vacuum fluctuations. Thereby, we prepare ions in an entangled state of motion. Controlling timescales and the coupling to environments should permit optimizing efficiencies while keeping the effect robust via established tools in quantum information processing (QIP). This might also permit to cross-fertilize between concepts in cosmology and applications of QIP, such as, quantum metrology, experimental quantum simulations and quantum computing.

arXiv comment35 pages, 8 figures

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