Journal
PHYSICAL REVIEW LETTERS
Volume 123, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.180502
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [237456450 (SCHA 973/6-2), 278162697 (SFB 1242)]
- Georg H. Endress foundation
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Quantum theory predicts intriguing dynamics during drastic changes of external conditions. We switch the trapping field of two ions sufficiently fast to tear apart quantum fluctuations, i.e., create pairs of phonons and, thereby, squeeze the ions' motional state. This process can be interpreted as an experimental analog to cosmological particle creation and is accompanied by the formation of spatial entanglement. Hence, our platform allows one to study the causal connections of squeezing, pair creation, and entanglement and might permit one to cross-fertilize between concepts in cosmology and applications of quantum information processing.
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