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Area of Science:

  • Quantum mechanics
  • Open quantum systems
  • Quantum dynamics

Background:

  • Controlling quantum wave packet trajectories is crucial for quantum technologies.
  • Dissipative environments are often assumed to cause decoherence, limiting quantum control.
  • Engineering tailored environments offers a potential pathway for quantum state manipulation.

Purpose of the Study:

  • To develop a systematic approach for engineering dissipative environments.
  • To demonstrate the steering of quantum wave packets along desired trajectories using these engineered environments.
  • To investigate the impact of nonconservative stochastic forces on quantum purity.

Main Methods:

  • Development of a systematic methodology for designing dissipative environments.
  • Application of the methodology to specific quantum phenomena, including environment-assisted tunneling and trapping.
  • Analysis of quantum purity preservation under engineered nonconservative stochastic forces.

Main Results:

  • Successful demonstration of steering quantum wave packets along predefined trajectories.
  • Illustrative examples include environment-assisted tunneling, trapping, effective mass assignment, and pseudorelativistic behavior.
  • Preservation of quantum purity was achieved, contrary to the expectation that nonconservative forces lead to decoherence.

Conclusions:

  • Engineered dissipative environments offer a flexible tool for controlling quantum dynamics.
  • Nonequilibrium open quantum dynamics can be harnessed to preserve quantum coherence.
  • This approach opens new avenues for quantum control and the development of quantum technologies.