Quantum Computing with Circular Rydberg Atoms

Neutral-atoms in a optical tweezer arrays have become a leading platform for quantum computing and simulation. They combine attractive features such as large system size, long coherence time, and strong interactions. However, the fidelity of two-qubit gates based on interaction between Rydberg states is fundamentally limited by the finite lifetime of the laser-accessible low angular momentum Rydberg states. Circular Rydberg states with the maximal angular momentum (m=l-1) have longer lifetimes, but they are difficult to access from ground state due to the large momentum mismatch. To sidestep this challenge, we propose an alternative quantum computing approach by encoding qubits in different circular Rydberg states [1], building on a related proposal for quantum simulation [2].

In this poster, we will present the theoretical proposal from Ref. [1] along with progress on an experimental realization.