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Quantum Control by Few-Cycles Pulses: The Two-Level Problem

Entropy, ISSN: 1099-4300, Vol: 25, Issue: 2
2023
  • 3
    Citations
  • 0
    Usage
  • 2
    Captures
  • 1
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    3
  • Captures
    2
  • Mentions
    1
    • Blog Mentions
      1
      • Blog
        1

Article Description

We investigate the problem of population transfer in a two-states system driven by an external electromagnetic field featuring a few cycles, until the extreme limit of two or one cycle. Taking the physical constraint of zero-area total field into account, we determine strategies leading to ultrahigh-fidelity population transfer despite the failure of the rotating wave approximation. We specifically implement adiabatic passage based on adiabatic Floquet theory for a number of cycles as low as 2.5 cycles, finding and making the dynamics follow an adiabatic trajectory connecting the initial and targeted states. Nonadiabatic strategies with shaped or chirped pulses, extending the (Formula presented.) -pulse regime to two- or single-cycle pulses, are also derived.

Bibliographic Details

Peyraut, François; Holweck, Frédéric; Guérin, Stéphane

MDPI AG

Computer Science; Mathematics; Physics and Astronomy; Engineering

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