Collective Dissipation Engineering of Interacting Rydberg Atoms

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.