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Phys. Rev. Lett. 89, 037901 (2002) [4 pages]

Quantum Entanglement in Carbon Nanotubes

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Cristina Bena1, Smitha Vishveshwara1, Leon Balents1, and Matthew P. A. Fisher2
1Department of Physics, University of California, Santa Barbara, California 93106
2Institute for Theoretical Physics, University of California, Santa Barbara, California 93106-4030

Received 6 February 2002; published 26 June 2002

See accompanying Physics Focus

With the surge of research in quantum information, the issue of producing entangled states has gained prominence. Here, we show that judiciously bringing together two systems of strongly interacting electrons with vastly differing ground states—the gapped BCS superconductor and the Luttinger liquid—can result in quantum entanglement. We propose three sets of measurements involving single-walled metallic carbon nanotubes which have been shown to exhibit Luttinger liquid physics, to test our claim and as nanoscience experiments of interest in and of themselves.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.037901
DOI:
10.1103/PhysRevLett.89.037901
PACS:
03.65.Ud, 03.67.-a, 71.10.Pm, 72.25.-b