Dynamical features of interference phenomena in the presence of entanglement

T. Kaufherr*, Y. Aharonov, S. Nussinov, S. Popescu, J. Tollaksen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A strongly interacting, and entangling, heavy nonrecoiling external particle effects a significant change of the environment. Described locally, the corresponding entanglement event is a generalized electric Aharonov-Bohm effect, which differs from the original one in a crucial way. We propose a gedanken interference experiment. The predicted shift of the interference pattern is due to a self-induced or "private" potential difference experienced while the particle is in vacuum. We show that all nontrivial Born-Oppenheimer potentials are "private" potentials. We apply the Born-Oppenheimer approximation to interference states. Using our approach, we calculate the relative phase of the external heavy particle as well as its uncertainty throughout an interference experiment or entanglement event. We thus complement the Born-Oppenheimer approximation for interference states.

Original languageEnglish
Article number052127
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number5
StatePublished - 31 May 2011


FundersFunder number
Seventh Framework Programme248095


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