Microsoft's Majorana 1 quantum processor features eight topological qubits and aims for competitiveness by leveraging unique advantages. According to Nayak, the energy required to disrupt the Cooper pairs can be significantly increased through small adjustments, enhancing stability. The compactness of the hardware allows for up to a million qubits on a single chip, eliminating the need for complex connections found in larger systems. Furthermore, the hardware's control mechanisms are simplified, with voltage-controlled qubits and digital signals managed by a cryogenic controller, fostering straightforward maintenance and operational efficiency.
"Even if you put in margin for control structures and wiring and fan out, it's still a few centimeters by a few centimeters," Nayak said.
"Our qubits are voltage-controlled," Nayak told Ars. "What we're doing is just turning on and off coupling of quantum dots to qubits to topological nano wires."
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