Understanding Side-Channel Vulnerabilities in Superconducting Qubit Readout Architectures

arXiv:2405.08962v1 Announce Type: cross
Abstract: Frequency-multiplexing is an effective method to achieve resource-efficient superconducting qubit readout. Allowing multiple resonators to share a common feedline, the number of cables and passive components involved in the readout of a qubit can be drastically reduced. However, this improvement in scalability comes at the price of a crucial non-ideality -- an increased readout crosstalk. Prior works have targeted building better devices and discriminators to reduce its effects, as readout-crosstalk-induced qubit measurement errors are detrimental …

architectures arxiv cables can channel components cs.cr improvement passive quant-ph qubit resource scalability share side-channel understanding vulnerabilities