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This study links photon bunching and antibunching to two-atom quantum entanglement in a cavity quantum electrodynamics model. Optimal photon antibunching and bunching directly correlate with maximal two-atom entanglement under weak dissipation.

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Area of Science:

  • Quantum Optics
  • Quantum Information Science
  • Atomic Physics

Background:

  • Photon bunching and antibunching represent classical and quantum characteristics of light.
  • The relationship between these photon statistics and quantum entanglement, particularly two-atom entanglement, remains underexplored.

Purpose of the Study:

  • To investigate the connection between steady-state photon statistics and two-atom entanglement.
  • To demonstrate this relationship using a cavity quantum electrodynamics model.

Main Methods:

  • Designed a cavity quantum electrodynamics model with two trapped atoms.
  • Analyzed steady-state photon statistics and two-atom entanglement.
  • Investigated the impact of weak and strong dissipations, and pure dephasing.

Main Results:

  • Under weak dissipation, maximal two-atom entanglement corresponds to optimal photon antibunching (quantum feature).
  • Maximal two-atom entanglement also corresponds to optimal photon bunching (classical feature).
  • The influence of strong dissipation and pure dephasing on these correlations was analyzed.

Conclusions:

  • Establishes a direct link between photon statistics and two-atom entanglement.
  • Highlights how classical and quantum light features are connected to entanglement.
  • Provides insights into the role of dissipation and dephasing.