Entanglement limits duality and vice versa

X. F. Qian, A. N. Vamivakas, J. H. Eberly

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

Fundamentally contradictory but inescapably joined dual attributes, wave and particle, remain a conceptually unsettling element at the heart of quantum mechanics. It was a career-long unanswered challenge for Bohr to rationalize quantum duality. The conceptual dilemma it presents has remained an open issue, a topic of continued discussion, ever since. Here we report the discovery of an experimentally manageable route to control the weirdness of duality. Ironically, entanglement, the other conceptually challenging weirdness of quantum theory, will be shown to be in control of duality. We establish a simple identity through which entanglement prescribes quantitatively the degree of duality, of combined waveness and particleness, that can be recorded in any one-quantum two-path coherence experiment.

Original languageEnglish
Article number080942-06
Pages (from-to)942-947
Number of pages6
JournalOptica
Volume5
Issue number8
DOIs
StatePublished - 20 Aug 2018

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