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Doctoral thesis
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English

Distribution and certification of photonic entanglement for quantum communication

Contributors

Verbanis, Ephanielle

Directors

Zbinden, Hugo

Defense date

2019-05-16

Abstract

In this thesis, I study quantum resources for quantum communication and cryptography. The first part deals with bit commitment, a cryptographic primitive in which a party commits a secret bit to another party. After shortly presenting the security issues faced by quantum bit commitment, I demonstrate the first realization of a secure relativistic bit commitment sustained for 24 hours. The second part deals with the development of efficient methods to generate, distribute and characterize photonic entangled states. I address the problem of certifying entanglement in the presence of measurement imperfections, and demonstrate a practical implementation of a measurement-device-independent entanglement witness. I then address the challenge of long-distance distribution of entanglement. I demonstrate a heralded photon amplifier and entanglement swapping protocols adapted for the distribution of single photon entanglement, and further discuss the advantages and limitations of using single photon entanglement as a resource for quantum communication.

Keywords

  • Quantum communication
  • Quantum cryptography
  • Bit commitment
  • Entanglement distribution
  • Entanglement certification
  • Device Independent

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

VERBANIS, Ephanielle. Distribution and certification of photonic entanglement for quantum communication. Doctoral Thesis, 2019. doi: 10.13097/archive-ouverte/unige:119899

Main files (1)

Thesis

Identifiers

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Technical informations

Creation

12/06/2019 16:03:00

First validation

12/06/2019 16:03:00

Update

26/05/2023 12:46:37

Status update

26/05/2023 12:46:37

Last indexation

13/05/2025 18:04:19
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