A single shared Π-filter integrated in the feedline uses engineered microwave interference to suppress environmental admittance and deliver Purcell-limited qubit relaxation times above 1 ms across roughly 1.5 GHz while preserving readout and reset modes.
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Engineered broadband Purcell protection using a shared $\Pi$-filter for multiplexed superconducting qubits
A single shared Π-filter integrated in the feedline uses engineered microwave interference to suppress environmental admittance and deliver Purcell-limited qubit relaxation times above 1 ms across roughly 1.5 GHz while preserving readout and reset modes.