Full stack ahead: Pioneering quantum hardware allows for controlling up to thousands of qubits at cryogenic temperaturesnest-like tangle of cables, which could work for limited numbers of qubits (and, perhaps, even at an “intermediate scale”) but not for large-scale quantum computers. Figure 3: Diagram of the digital logic block (inset shows its makeup including a master oscillator, FSM, and SPI) and analog charge-lock fast-gate (CLFG) cells. They’ve also extended this research to create the first-of-its-kind general-purpose cryo-compute core, one step up the quantum stack. The analog component of the chip is a series of cells, called “charge-lock fast-gate” (CLFG) cells, that perform two functions. Hence, it is necessary to develop a full system, made up of many components, that maintains a regulated, stable environment. In that context, the challenge of controlling large numbers of qubits looms large, even though quantum computing devices with thousands of qubits are still years in the future. However, all qubits are not created equal, so these qubit counts are often apples-to-oranges comparisons.
Article from Microsoft.