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Title:
Quantum amplifier: Measurement with entangled spins
Authors:
Lee, Jae-Seung; Khitrin, A. K.
Affiliation:
AA(Department of Chemistry, Kent State University, Kent, Ohio 44242-0001), AB(Department of Chemistry, Kent State University, Kent, Ohio 44242-0001)
Publication:
Journal of Chemical Physics, Volume 121, Issue 9, pp. 3949-3951 (2004). (JChPh Homepage)
Publication Date:
09/2004
Origin:
AIP
PACS Keywords:
Nonclassical states of the electromagnetic field including entangled photon states, quantum state engineering and measurements, Nuclear magnetic resonance and relaxation, Liquid crystals
Abstract Copyright:
2004: American Institute of Physics
DOI:
10.1063/1.1788661
Bibliographic Code:
2004JChPh.121.3949L

Abstract

It is experimentally demonstrated that entangled quantum states can be used to amplify perturbations and to increase changes in observable values. The physical system is seven nuclear spins of single-labeled 13C-benzene in a liquid crystalline matrix. An entangled state of six proton spins was used to monitor interaction with the 13C spin.
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Database: Astronomy
Physics
arXiv e-prints