Integrated optical control of a trapped-ion qubit

Summary

Demonstrates chip-scale photonic integrated circuit delivering a 674 nm Brillouin laser stabilized to the ${}^{88}{\text{Sr}}^{+}$ quadrupole transition. Achieves 6 kHz laser linewidth, 60 μs Ramsey coherence time, and 99% SPAM fidelity with Rabi oscillations demonstrated entirely without bulk free-space optics. Represents a major step toward fully integrated trapped-ion quantum processors.

Cited In

• strontium-88-ion-qubit