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Area of Science:

  • Quantum mechanics
  • Optomechanics
  • Macroscopic quantum phenomena

Background:

  • Observing quantum mechanical effects beyond the nanoscale is a significant challenge in quantum science.
  • Existing experimental protocols for macroscopic quantum states often rely on probabilistic measurement.
  • Optomechanics offers a promising platform for exploring quantum effects on larger scales.

Purpose of the Study:

  • To develop a completely deterministic method for creating macroscopic quantum states.
  • To investigate the creation and spatial expansion of quantum states in an optomechanical system.
  • To achieve high-fidelity macroscopic quantum states using a novel approach.

Main Methods:

  • Utilized the Membrane In The Middle (MIM) optomechanical model.
  • Employed deterministic control over the membrane's opacity.
  • Carefully selected the initial state of the optical cavity.

Main Results:

  • Successfully demonstrated a deterministic method for macroscopic quantum state creation.
  • Achieved the creation and spatial growth of the membrane's position into a large cat state.
  • Generated high-fidelity cat states with spatial separations up to approximately 300 nm using a Bose-Einstein condensate as the membrane.

Conclusions:

  • The developed method provides a deterministic pathway to macroscopic quantum state generation, overcoming limitations of probabilistic approaches.
  • The study highlights the potential of optomechanics, particularly with Bose-Einstein condensates, for realizing large-scale quantum phenomena.
  • This work paves the way for future experiments exploring quantum mechanics in macroscopic systems.