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Area of Science:

  • Quantum physics
  • Photonics
  • Quantum computing

Background:

  • Adiabatic control is vital for quantum and photonic applications.
  • Achieving the adiabaticity control limit (ACL), the shortest duration with minimal mode crosstalk, is challenging.

Purpose of the Study:

  • To introduce an inverse adiabaticity control strategy to overcome ACL challenges.
  • To utilize tolerable crosstalk as a control parameter for optimizing state evolution.

Main Methods:

  • Developed an inverse adiabaticity control strategy.
  • Applied the strategy to stimulated Raman adiabatic passage.
  • Determined optimal solutions under various parameter constraints.
  • Experimentally validated in silicon photonic waveguides.

Main Results:

  • Demonstrated the principle of inverse adiabaticity control.
  • Showcased experimental effectiveness in silicon photonic waveguides.
  • Achieved simultaneous fastest and most robust evolution, overcoming conventional tradeoffs.

Conclusions:

  • The inverse control method offers a universal strategy for physical systems.
  • ACL solutions meet critical needs for photonic and quantum computing devices.
  • Overcame the typical tradeoff between speed and robustness in quantum state evolution.