Robust quantum control of $^{171}$Yb$^+$ qubits in a surface-trap with integrated microwave elements

We present a microfabricated surface-electrode ion trap with a pair of on-chip microwave waveguides for coherent operations on hyperfine $^{171}$Yb$^+$ qubits. Our design uses common silicon-on-aluminum microfabrication techniques compatible with integration in other surface-trap designs. We demonstrate sub-microsecond $\pi$-times, microwave polarization control, and coherence lifetimes exceeding $T_2 > 0.1$ s. We also demonstrate coherent transport of qubits over a 1.8 mm distance. Further, we utilize compensating composite pulses which reduce sensitivity to field variations to produce extremely uniform gates over a 0.9 mm qubit manipulation region.