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High-fidelity spatial and polarization addressing of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Ca</mml:mi><mml:none /><mml:mo>+</mml:mo><mml:mprescripts /><mml:none /><mml:mn>43</mml:mn></mml:mmultiscripts></mml:math> qubits using near-field microwave control
Individual addressing of qubits is essential for scalable quantum computation. Spatial addressing allows unlimited numbers of qubits to share the same frequency, while enabling arbitrary parallel operations. We demonstrate addressing of long-lived $^{43}\mathrm{Ca}^{+}$ ``atomic clock'' qubits held in separate zones ($960\phantom{\rule{0.28em}{0ex}}\ensuremath{\mu}\text{m}$ apart) of a microfabricated surface trap with integrated microwave …