•Princeton University physicists extended the lifetime of Cesium-133 atom qubits to 406 microseconds, a 3.3x improvement over room temperature measurements.
•This advance was achieved using a 4 Kelvin radiation shield and other cryogenic techniques to suppress blackbody radiation-induced transitions, a major source of decoherence.
•The extended T1 relaxation times are crucial for improving gate fidelities and advancing toward scalable, fault-tolerant quantum computing systems.
•Princeton University physicists extended the lifetime of Cesium-133 atom qubits to 406 microseconds, a 3.3x improvement over room temperature measurements.
•This advance was achieved using a 4 Kelvin radiation shield and other cryogenic techniques to suppress blackbody radiation-induced transitions, a major source of decoherence.
•The extended T1 relaxation times are crucial for improving gate fidelities and advancing toward scalable, fault-tolerant quantum computing systems.