On the efficacy of weak measurements for tomography

ORAL

Abstract

Recently there has been a fascination with weak measurements in the field of tomography. We conduct a detailed analysis of two specific schemes: so-called ``direct state tomography'' and another scheme marketed as outperforming ``standard'' tomography with respect to fidelity considerations. Through the application of generalized measurement theory we clearly identify what weak measurements contribute beyond ``standard'' projective measurements and what simple techniques the application of weak measurements obscures.

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Authors

  • Jonathan A. Gross

    University of New Mexico, Center for Quantum Information and Control

  • Christopher Ferrie

    University of New Mexico, University of New Mexico, Center for Quantum Information and Control

  • Ninnat Dangniam

    University of New Mexico, Center for Quantum Information and Control, Univ of New Mexico

  • Carlton M. Caves

    University of New Mexico, Center for Quantum Information and Control