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Multi-Channel Measurement Systems and Methods for Evaluation of Qubit Systems and Quantum Periphery at Cryogenic Temperatures
Future quantum computers are highly-scaled systems exhibiting large numbers of qubits to achieve quantum supremacy over existing supercomputers. Most qubits are manipulated and read out at microwave or mm-wave frequencies. Here, cryogenic multi-channel measurement setups exhibiting highly coherent sources and RF MMICs are inevitable. This talk reviews hardware and measurement methods to characterize cryogenic multi-channel qubit systems. The determination of inter-channel crosstalk and statistical evaluation of quantum states and finally, key findings with their impact on future packaging technologies are discussed.