Entang-bling: Observing quantum correlations in room-temperature solids

I. A. Walmsley, K. C. Lee, MR Sprague, BJ Sussman, J. Nunn, NK Langford, X-M Jin, T Champion, P Michelberger, KF Reim, DG England, D. Jaksch

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Quantum entanglement in the motion of macroscopic solid bodies has implications both for quantum technologies and foundational studies of the boundary between the quantum and classical worlds. Entanglement is usually fragile in room-temperature solids, owing to strong interactions both internally and with the noisy environment. We generated motional entanglement between vibrational states of two spatially separated, millimeter-sized diamonds at room temperature. By measuring strong nonclassical correlations between Raman-scattered photons, we showed that the quantum state of the diamonds has positive concurrence with 98% probability. Our results show that entanglement can persist in the classical context of moving macroscopic solids in ambient conditions.

Original languageEnglish
Article number012004
JournalJournal of Physics: Conference Series
Volume442
Issue number1
DOIs
Publication statusPublished - 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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