Phys.org November 9, 2021
Researchers at the Lawrence Berkeley National Laboratory have demonstrated a new way to control qubits by substituting the larger, more costly traditional RF control systems with smaller interactive mixing modules. The modular system has high -reliability, delivering high-resolution, low-noise RF signals needed to manipulate and measure the superconducting qubit at room temperature. To do so, they shifted the qubit manipulation and measurement signal frequency between the electronics baseband and the quantum system. According to the researchers their system could be expanded to other quantum information science platforms, and RF mixing can be expanded to higher frequencies. The electromagnetic interference shielding eliminates undesired perturbations, which reduce signal integrity and limit overall performance. This shielding aims to prevent the signal from leaking out and interfering with surrounding electronics…read more. TECHNICAL ARTICLE
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