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Atomic spin interferometry

P W Forder

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The interference of classical and quantum spinors is discussed. A formalism based on a Schwinger assembly of elementary spins is used to consider the interference of quantum spin states in terms of their isomorphic image spinors in classical spin space. By considering a model spin interferometer in the form of an aplanar ring, a spin interference term is obtained from a Berry-like spin rotator determined by the curvature of the ring. It is suggested that spin interferometry may provide a direct probe of the gravitational curvature of spacetime.


PACS

03.75.Be Atom and neutron optics

Subjects

Quantum gases, liquids and solids

Dates

Issue 19 (14 October 1999)

Received 25 September 1998, in final form 14 June 1999



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