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Jing, Yumang; Fadel, Matteo; Ivannikov, Valentin; Byrnes, Tim
New journal of physics, 09/2019, Letnik: 21, Številka: 9Journal Article
We investigate and model a method for producing entanglement between two spatially separated Bose-Einstein condensates (BECs). In our approach, a spin-polarized BEC is squeezed using a (Sz)2 interaction, then are split into two separate clouds. After the split, we consider that the particle number in each cloud collapses to a fixed number. We show that this procedure is equivalent to applying an interaction corresponding to squeezing each cloud individually plus an entangling operation. We analyze the system's inter-well entanglement properties and show that it can be detected using correlation-based entanglement criteria. The nature of the states is illustrated by Wigner functions and have the form of a correlated squeezed state. The conditional Wigner function shows high degrees of non-classicality for dimensionless squeezing times beyond 1 N , where N is the number of particles per BEC.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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