Measurement of the Casimir-Polder force

Sukenik, CI; Boshier, MG; Cho, D; Sandoghdar, Vahid; Hinds, EA

doi:10.1103/PhysRevLett.70.560

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Measurement of the Casimir-Polder force

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Sukenik, C., Boshier, M., Cho, D., Sandoghdar, V., & Hinds, E. (1993). Measurement of the Casimir-Polder force. Physical Review Letters, 70, 560-563. doi:10.1103/PhysRevLett.70.560.

Cite as: http://hdl.handle.net/21.11116/0000-0002-9C04-A

Abstract

We have studied the deflection of ground-state sodium atoms passing through a micron-sized parallel-plate cavity by measuring the intensity of a sodium atomic beam transmitted through the cavity as a function of cavity plate separation. This experiment provides clear evidence for the existence of the Casimir-Polder force, which is due to modification of the ground-state Lamb shift in the confined space of a cavity. Our results confirm the magnitude of the force and the distance dependence predicted by quantum electrodynamics.