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Optimized three-level quantum transfers based on frequency-modulated optical excitations.

Francesco Petiziol1,2, Ennio Arimondo3,4, Luigi Giannelli5

  • 1Department of Mathematical, Physical and Computer Sciences, University of Parma, Parco Area delle Scienze 7/A, 43124, Parma, Italy. francesco.petiziol@unipr.it.

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Summary
This summary is machine-generated.

This study introduces a new quantum control protocol for faster, more robust quantum state transfers. The method enhances adiabatic passage techniques, improving quantum device realization even with environmental noise.

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Area of Science:

  • Quantum Control
  • Quantum Information Science
  • Atomic, Molecular, and Optical Physics

Background:

  • Quantum control faces challenges in balancing high fidelity, speed, and noise robustness.
  • These challenges impede the development and realization of practical quantum devices.
  • Efficient quantum state transfer is crucial for quantum computation and information processing.

Purpose of the Study:

  • To propose a novel theoretical protocol for accelerated quantum state transfer.
  • To enhance the widely used stimulated Raman adiabatic passage technique.
  • To achieve high fidelity, fast operation times, and robustness against noise in quantum systems.

Main Methods:

  • The protocol is based on stimulated Raman adiabatic passage.
  • It employs additional control fields on optical excitations along frequency sidebands.
  • Numerical simulations are used to demonstrate efficiency and robustness.

Main Results:

  • The protocol achieves accelerated adiabatic following in generic three-level systems.
  • It dynamically counteracts undesired transitions, improving fidelity.
  • The method is efficient across a wide parameter range and robust to environmental disturbances.
  • Timescales approach the quantum speed limit, enabling faster quantum operations.

Conclusions:

  • The proposed protocol offers a practical solution to key quantum control challenges.
  • It facilitates experimental implementation without requiring new resources.
  • The technique is applicable to quantum gates and scalable to multi-level systems.