Complementary sequential measurements generate entanglement

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Coles, Patrick J. and Piani, Marco (2014) Complementary sequential measurements generate entanglement. Physical Review A, 89. 010302(R). ISSN 1050-2947 (https://doi.org/10.1103/PhysRevA.89.010302)

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Abstract

We present a paradigm for capturing the complementarity of two observables. It is based on the entanglement created by the interaction between the system observed and the two measurement devices used to measure the observables sequentially. Our main result is a lower bound on this entanglement and resembles well-known entropic uncertainty relations. Besides its fundamental interest, this result directly bounds the effectiveness of sequential bipartite operations—corresponding to the measurement interactions—for entanglement generation. We further discuss the intimate connection of our result with two primitives of information processing, namely, decoupling and coherent teleportation.

ORCID iDs

Coles, Patrick J. and Piani, Marco ORCID logoORCID: https://orcid.org/0000-0002-4698-9497;
  • Item type:Article
    ID code:51655
    Dates:
    Date
    Event
    21 January 2014
    Published
    7 January 2014
    Accepted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:13 Feb 2015 14:51
    Last modified:12 Dec 2024 03:09
    URI:https://strathprints.strath.ac.uk/id/eprint/51655
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