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Article Dans Une Revue Microwave and Optical Technology Letters, Année : 2013

Phase-Locked Homodyne Measurement of Quasiprobability Q Function and Detection of Information-Carrying Weak-Coherent-States

Edith Garcia
  • Fonction : Auteur
Francisco Mendieta
  • Fonction : Auteur
Josue Lopez
  • Fonction : Auteur
Eduardo Alvarez
  • Fonction : Auteur
Arturo Arvizu
  • Fonction : Auteur

Résumé

We present an eight-port homodyne receiver implemented in free space technology for detection of weak coherent states that carry binary information. For transmitted power economy, we use suppressed-carrier modulation, therefore, we have implemented an optical Costas-loop-type carrier synchronizer. We obtain the quasiprobability Q function from the in-phase and quadrature observables that are simultaneously measured. Statistical results for the quadrature components are presented. We perform measurements for the bit error rate and the mutual information between transmitter–receiver. The results show that the proposed setup is suitable in quantum communications and continuous variable quantum key distribution systems.

Dates et versions

hal-04109038 , version 1 (29-05-2023)

Identifiants

Citer

Edith Garcia, Francisco Mendieta, Josue Lopez, Eduardo Alvarez, Arturo Arvizu, et al.. Phase-Locked Homodyne Measurement of Quasiprobability Q Function and Detection of Information-Carrying Weak-Coherent-States. Microwave and Optical Technology Letters,, 2013, Volume 55, Issue 10, Pages: 2431-2437 (10), pp.2431-2437. ⟨10.1002/mop.27844⟩. ⟨hal-04109038⟩
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