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Engineered dissipation offers new quantum control. Researchers developed laser-induced atom loss to manipulate quantum states, revealing interaction effects and enabling new preparation methods for quantum systems.

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Area of Science:

  • Quantum Physics
  • Atomic Physics
  • Quantum Optics

Background:

  • Engineered dissipation is a novel approach for quantum state control.
  • It enables high-fidelity preparation, transfer, stabilization, and access to new quantum phase transitions.
  • Controlling open quantum systems is crucial for quantum technologies.

Purpose of the Study:

  • To realize a tunable, state-resolved laser-induced loss channel for individual Rydberg atoms.
  • To explore the effects of engineered dissipation in both noninteracting and strongly correlated settings.
  • To demonstrate new methods for dissipative preparation of correlated quantum states.

Main Methods:

  • Utilizing Rydberg atoms to create a tunable, state-resolved laser-induced loss channel.
  • Investigating individual atoms and strongly correlated settings.
  • Theoretical modeling of many-body chains with engineered dissipation.

Main Results:

  • Revealed interaction-driven shifts of the exceptional point between quantum Zeno and anti-Zeno regimes.
  • Demonstrated interaction-enhanced decay.
  • Observed a configuration-selective two-body Zeno effect that freezes target spin states.
  • Theoretically showed dissipative distillation of unwanted spin configurations in many-body chains.

Conclusions:

  • Established a versatile approach for exploring strongly interacting, open quantum spin systems.
  • Opened new routines for dissipative preparation of correlated quantum states in Rydberg atom arrays.
  • Highlighted the potential of engineered dissipation for quantum state control and novel phase transitions.