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Microwave-multiplexed qubit controller using adiabatic superconductor logic
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DOI：10.1038/s41534-024-00849-2.png)
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Cryogenic qubit controllers (QCs) are the key to build large-scale superconducting quantum processors. However, developing scalable QCs is challenging because the cooling power of a dilution refrigerator is too small (similar to 10 mu W at similar to 10 mK) to operate conventional logic families, such as complementary metal-oxide-semiconductor logic and superconducting single-flux-quantum logic, near qubits. Here we report on a scalable QC using an ultra-low-power superconductor logic family, namely adiabatic quantum-flux-parametron (AQFP) logic. The AQFP-based QC, referred to as the AQFP-multiplexed QC (AQFP-mux QC), produces multi-tone microwave signals for qubit control with an extremely small power dissipation of 81.8 pW per qubit. Furthermore, the AQFP-mux QC adopts microwave multiplexing to reduce the number of coaxial cables for operating the entire system. As a proof of concept, we demonstrate an AQFP-mux QC chip that produces microwave signals at two output ports through microwave multiplexing and demultiplexing. Experimental results show an output power of approximately -80 dBm and on/off ratio of similar to 40 dB at each output port. Basic mixing operation is also demonstrated by observing sideband signals.
Keyword:
QUANTUM-FLUX-PARAMETRON
期刊
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8.3
论文数:
1.4K
被引数:
8.1K
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引用论文
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PREAI
分享收藏分享收藏分享收藏Multiplexed superconducting qubit control at millikelvin temperatures with a low-power cryo-CMOS multiplexer.png)
NATURE ELECTRONICS
NATURE ELECTRONICSIF40.9
PREAI
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