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Article Dans Une Revue PRX Quantum Année : 2024

A Hybrid Approach to Mitigate Errors in Linear Photonic Bell-State Measurement for Quantum Interconnects

Akito Kawasaki
  • Fonction : Auteur
Tom Darras
  • Fonction : Auteur
Akira Furusawa
  • Fonction : Auteur

Résumé

Optical quantum information processing critically relies on Bell-state measurement, a ubiquitous operation for quantum communication and computing. Its practical realization involves the interference of optical modes and the detection of a single photon in an indistinguishable manner. Yet, in the absence of efficient photon-number resolution capabilities, errors arise from multi-photon components, decreasing the overall process fidelity. Here, we introduce a novel hybrid detection scheme for Bell-state measurement, leveraging both on-off single-photon detection and quadrature conditioning via homodyne detection. We derive explicit fidelities for quantum teleportation and entanglement swapping processes employing this strategy, demonstrating its efficacy. We also compare with photon-number resolving detectors and find a strong advantage of the hybrid scheme in a wide range of parameters. This work provides a new tool for linear optics schemes, with applications to quantum state engineering and quantum interconnects.

Dates et versions

hal-04641885 , version 1 (09-07-2024)

Identifiants

Citer

Beate E Asenbeck, Akito Kawasaki, Ambroise Boyer, Tom Darras, Alban Urvoy, et al.. A Hybrid Approach to Mitigate Errors in Linear Photonic Bell-State Measurement for Quantum Interconnects. PRX Quantum, 2024, 5 (3), pp.030331. ⟨10.1103/PRXQuantum.5.030331⟩. ⟨hal-04641885⟩
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