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Tunable Quantum Criticality in Multicomponent Rydberg Arrays.

Natalia Chepiga¹

¹Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.

Physical Review Letters

|March 1, 2024

Summary

Multicomponent Rydberg arrays enable manipulation of quantum critical properties, stabilizing the period-4 phase and allowing control over chiral transitions. This overcomes limitations of single-component systems for experimental verification.

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Area of Science:

Quantum physics
Atomic physics
Condensed matter physics

Background:

Rydberg atom arrays are crucial for studying 1D quantum phase transitions.
Chiral phase transitions from density waves remain experimentally unverified due to short transition intervals in single-component systems.

Purpose of the Study:

Investigate multicomponent Rydberg arrays for manipulating quantum critical properties.
Stabilize and experimentally probe the theoretically predicted chiral transition from the period-4 phase.

Main Methods:

Utilized an effective blockade model for two-component Rydberg atoms.
Applied laser detuning to individual and both components to access different phases.
Analyzed the role of Rabi frequency ratios in tuning critical properties.

Main Results:

Multicomponent arrays allow tuning of quantum critical properties without breaking translation symmetry.
Simultaneous laser detuning stabilizes the period-4 phase, bounded by a chiral transition.
The ratio of Rabi frequencies controls the conformal Ashkin-Teller point and the extent of the chiral transition.

Conclusions:

Multicomponent Rydberg arrays offer a viable platform for experimentally verifying predicted chiral transitions.
This approach provides enhanced control over quantum critical phenomena in Rydberg systems.