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Area of Science:

  • Quantum Optics
  • Quantum Information Science
  • Condensed Matter Physics

Background:

  • Environmental interactions can influence quantum system dynamics.
  • Entanglement and broken time-reversal symmetry are key factors in quantum control.
  • Understanding environmentally assisted quantum control is crucial for quantum technologies.

Purpose of the Study:

  • To analytically and numerically investigate one-photon phase control assisted by an environment.
  • To determine the relative contributions of entanglement and broken time-reversal symmetry.
  • To explore the role of non-Markovian dynamics and system-bath coupling strength.

Main Methods:

  • Analytical examination of a model system.
  • Numerical simulations of quantum dynamics.
  • Analysis of system-environment interactions, including entanglement and coupling.

Main Results:

  • One-photon phase control is enhanced by non-Markovian dynamics and moderate system-bath coupling.
  • Entanglement and broken time-reversal symmetry are essential for environmentally assisted control.
  • Initial non-zero stationary coherences highlight the role of quantum mechanics.
  • System equilibration with the environment leads to eventual loss of phase control.

Conclusions:

  • Environmentally assisted one-photon phase control is feasible under specific conditions.
  • Non-Markovian effects and moderate coupling are beneficial for enhancing quantum control.
  • Maintaining phase control requires managing system-environment interactions to prevent equilibration.