Noise-Resilient Entangling Gates for Rydberg Atoms
Abstract
In recent years, neutral atoms have become a promising candidate for near-term,programmable quantum optimizers and simulators, leveraging exquisite single-particle control and coherence together with powerful entangling operations using long-range dipolar interactions in highly excited Rydberg states. A central drawback to this approach is the limited demonstrated fidelity of two-qubit gates. The principal causes are technical in originlaser phase noise and doppler shiftsand careful engineering has led to record fidelities of 97% in thelast year. However, this significantly below the state of the art in superconducting qubits and trapped ions. In this work, we propose to develop and experimentally characterize novel types of Rydberg gates that offer intrinsic immunity to laser noise and doppler shifts, by avoiding qubitstate-selective Rydberg excitation. This approach is naturally suited to implementation with hyperfine states in alkaline-earth atoms, such as 171Yb, which is the atom in our experiment. Theuse of alkaline earth atoms offers the additional benefit that the developed gates and entangling operations may be applied to the optical clock transitions, enabling advances in precision timekeeping, geodesy and tests of fundamental physics.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 17, 2020
- Source ID
- N000142012426
Entities
People
- Jeffrey Thompson
Organizations
- Office of Naval Research
- Trustees of Princeton University
- United States Navy