Quantum Walks in Periodic and Quasiperiodic Fibonacci Fibers

Area of Science:

• Quantum physics
• Photonics
• Materials science

Background:

• Quantum walks are fundamental to quantum computing and information processing.
• Existing platforms for quantum walks often face limitations in scalability and control.

Purpose of the Study:

• To demonstrate quantum walks and localized quantum walks in novel optical fiber structures.
• To introduce a new platform for quantum experiments using multicore ring fibers with periodic and quasiperiodic Fibonacci sequences.

Main Methods:

• Fabrication of multicore ring optical fibers with periodic and quasiperiodic Fibonacci sequences.
• Experimental demonstration and theoretical simulation of quantum walks and localized quantum walks.
• Characterization of the optical properties and disorder in the fabricated fibers.

Main Results:

• Successful demonstration of quantum walks and localized quantum walks in the new fiber platform.
• Achieved good agreement between theoretical predictions and experimental results.
• Showcased deterministic control over localized quantum walks in quasiperiodic Fibonacci fibers, unlike random disordered systems.

Conclusions:

• The developed multicore ring fibers provide a scalable, low-loss platform for quantum experiments.
• Quasiperiodic Fibonacci multicore ring fibers offer a novel class of photonic lattices for deterministic control of localized quantum walks.
• These findings pave the way for advanced quantum applications leveraging engineered photonic structures.