Physics – Quantum Physics
Scientific paper
2008-10-16
Phys. Rev. A 80, 032104 (2009)
Physics
Quantum Physics
5 pages, 2 figures. Version two has been accepted for publication in Physical Review A
Scientific paper
Experiments showing the violation of Bell inequalities have formed our belief that the world at its smallest is genuinely non-local. While many non-locality experiments use the first quantised picture, the physics of fields of indistinguishable particles, such as bosonic gases, is captured most conveniently by second quantisation. This implies the possibility of non-local correlations, such as entanglement, between modes of the field. In this paper we propose an experimental scheme that tests the theoretically predicted entanglement between modes in space occupied by massive bosons. Moreover, the implementation of the proposed scheme is capable of proving that the particle number superselection rule is not a fundamental necessity of quantum theory but a consequence of not possessing a distinguished reference frame.
Anders Janet
Heaney Libby
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