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Measurement-induced nonlocality quantified by Hellinger distance and weak measurements

Author

Listed:
  • V.S., Indrajith
  • Muthuganesan, R.
  • Sankaranarayanan, R.

Abstract

In this article, we propose measurement-induced nonlocality (MIN) quantified by Hellinger distance using von Neumann projective measurement. The proposed MIN is a bonafide measure of nonlocal correlation and is resistant to local ancilla problem. We obtain an analytical expression of the Hellinger distance MIN for general pure and 2×n mixed states. In addition to comparing with similar measures, we explore the role of weak measurement in capturing nonlocal correlation.

Suggested Citation

  • V.S., Indrajith & Muthuganesan, R. & Sankaranarayanan, R., 2021. "Measurement-induced nonlocality quantified by Hellinger distance and weak measurements," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 566(C).
    • Handle: RePEc:eee:phsmap:v:566:y:2021:i:c:s0378437120309134
    DOI: 10.1016/j.physa.2020.125615
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