Realizing Distance-Selective Interactions in a Rydberg-Dressed Atom Array

Area of Science:

• Quantum Computing
• Atomic Physics
• Quantum Information Science

Background:

• Measurement-based quantum computing requires rapid, large-scale entanglement in qubit registers.
• Atomic arrays are promising for quantum information storage, utilizing Rydberg states for entanglement.
• Isolating specific atom pairs for gate operations is challenging due to long-range Rydberg interactions.

Purpose of the Study:

• To engineer distance-selective Rydberg interactions for precise control in quantum computing.
• To overcome the limitations of long-range interactions in atomic arrays.
• To enable the creation of large-scale entanglement for quantum computation.

Main Methods:

• Engineered distance-selective interactions via off-resonant laser coupling of molecular potentials between Rydberg atom pairs.
• Utilized quantum gas microscopy to observe dressed interactions.
• Employed many-body Ramsey interferometry to verify correlated phase evolution.

Main Results:

• Demonstrated engineered interactions that are strongly peaked in distance.
• Verified dressed interactions through observation of correlated phase evolution.
• Identified atom loss and coupling to continuum modes as current limitations.

Conclusions:

• The engineered interactions pave the way for creating large-scale entanglement in atomic arrays.
• Mitigation strategies for atom loss and continuum coupling are outlined.
• This work advances the development of scalable quantum computing architectures.