Entangling macroscopic diamonds at room temperature

K. C. Lee, M. R. Sprague, B. J. Sussman, J. Nunn, N. K. Langford, X. M. Jin, T. Champion, P. Michelberger, K. F. Reim, D. England, D. Jaksch, I. A. Walmsley

Research output: Contribution to journalArticle

182 Citations (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
Pages (from-to)1253-1256
Number of pages4
JournalScience
Volume334
Issue number6060
DOIs
Publication statusPublished - 2 Dec 2011

ASJC Scopus subject areas

  • General

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    Lee, K. C., Sprague, M. R., Sussman, B. J., Nunn, J., Langford, N. K., Jin, X. M., Champion, T., Michelberger, P., Reim, K. F., England, D., Jaksch, D., & Walmsley, I. A. (2011). Entangling macroscopic diamonds at room temperature. Science, 334(6060), 1253-1256. https://doi.org/10.1126/science.1211914