A quantum processor based on coherent transport of entangled atom arrays

Area of Science:

• Quantum Computing
• Atomic Physics
• Quantum Information Science

Background:

• Scalable quantum information systems require programmable operations between qubits.
• Current quantum processors often have limited, local qubit connectivity.
• Dynamic connectivity is crucial for advanced quantum algorithms and error correction.

Purpose of the Study:

• To demonstrate a quantum processor with dynamic, non-local qubit connectivity.
• To realize programmable generation of complex entangled graph states.
• To enable advanced quantum simulations and error correction protocols.

Main Methods:

• Utilizing neutral atom arrays trapped and transported by optical tweezers.
• Employing hyperfine states for quantum information storage.
• Using Rydberg state excitation for entanglement generation and qubit interaction.

Main Results:

• Demonstrated a quantum processor with dynamic, non-local connectivity.
• Programmably generated entangled graph states, including cluster and Steane code states.
• Realized surface and toric code states, and measured entanglement entropy in quantum simulations.

Conclusions:

• The developed architecture provides a route towards scalable quantum processing.
• Dynamic connectivity overcomes limitations of fixed qubit layouts.
• Enables diverse applications from quantum simulation to metrology.