Ultra-low-vibration closed-cycle cryogenic surface-electrode ion trap apparatus

We describe the design, commissioning, and operation of an ultra-low-vibration closed-cycle cryogenic ion trap apparatus. One hundred lines for low-frequency signals and eight microwave/radio frequency coaxial feed-lines offer the possibility of implementing a small-scale ion-trap quantum processor or simulator. With all supply cables attached, more than 1.3 W of cooling power at 5 K is still available for absorbing energy from electrical pulses introduced to control ions. The trap itself is isolated from vibrations induced by the cold head using a helium exchange gas interface. The performance of the vibration isolation system has been characterized using a Michelson interferometer, finding residual vibration amplitudes on the order of 10 nm rms. Trapping of Be-9(+) ions has been demonstrated using a combination of laser ablation and photoionization.

Automated summary

The study details the design, commissioning, and operation of an ultra-low-vibration closed-cycle cryogenic ion trap apparatus, showcasing its potential for implementing a small-scale ion-trap quantum processor or simulator. The system demonstrates successful trapping of Be-9(+) ions through its cooling power and vibration isolation system performance analysis.