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Secure alignment of coordinate systems using quantum correlation

Rezazadeh, F ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevA.96.022310
  3. Abstract:
  4. We show that two parties far apart can use shared entangled states and classical communication to align their coordinate systems with a very high fidelity. Moreover, compared with previous methods proposed for such a task, i.e., sending parallel or antiparallel pairs or groups of spin states, our method has the extra advantages of using single-qubit measurements and also being secure, so that third parties do not extract any information about the aligned coordinate system established between the two parties. The latter property is important in many other quantum information protocols in which measurements inevitably play a significant role. © 2017 American Physical Society
  5. Keywords:
  6. Quantum entanglement ; Quantum optics ; Classical communication ; Co-ordinate system ; Entangled state ; High-fidelity ; Quantum correlations ; Quantum information ; Single qubits ; Third parties ; Quantum cryptography
  7. Source: Physical Review A ; Volume 96, Issue 2 , 2017 ; 24699926 (ISSN)
  8. URL: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.96.022310