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  • Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies
  • OSA Technical Digest (CD) (Optica Publishing Group, 2007),
  • paper QWF1

Quantum Entanglement and Metrology

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Abstract

For linear couplings of N systems to a parameter, quantum entanglement can improve the precision of parameter estimation from the 1/N shot-noise limit to the 1/N Heisenberg limit. Intrinsic k-body couplings improve this scaling further to 1/Nk.

© 2007 Optical Society of America

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