![]() Gooseberry enables this by operating at 100mK while dissipating sufficiently low power so that it does not heat up the qubits themselves. In the paper " A Cryogenic Interface for Controlling Many Qubits", the researchers present Gooseberry, a CMOS chip that takes digital inputs and generates many parallel qubit control signals thereby allowing scaled-up support for thousands of qubits-a feat Microsoft deems a "leap ahead from previous technology". To this end, Microsoft in collaboration with a team from the University of Sydney has developed a cryogenic quantum control platform that uses specialized CMOS circuits to address the problem of qubit control and decoherence. As a result, this remains an open research problem. ![]() A common solution is keeping these qubits in cryogenic environments where temperatures are tantalizingly close to absolute zero (0K), but this mechanical setup becomes a significant limitation in scaling up quantum computers for commercial use-cases. Researchers have been working towards making these qubits more robust to changes in the environment without losing their controllability. Quantum superposition, as it turns out, is the central tenet of quantum computation and is vital for achieving the said exponential speedups. That is, contemporary qubits are sensitive to changes in their environment and tend to lose their superposition because of it. But their Achilles' heel is a qubit's penchant for decoherence. ![]() Quantum computers provide a promising new model of computation that enables exponential speedups over certain classical algorithms.
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