Application note

Cryogenic environment optimization for superconducting transmon qubit characterization

We use a kiutra L-Type Rapid fast characterization cryostat to investigate the influence of the electromagnetic sample environment on the qubit relaxation time T1. We use a ConScience superconducting qubit (QiB0), measured over several days in multiple cooldowns at 50 mK, to show how noise sources can be mitigated by the use of appropriate shielding. The study demonstrates how the L-Type Rapid cryostat can be efficiently used to improve system architecture and design of superconducting qubits. In addition, we suggest some best practices for shielding superconducting qubits.

Keywords: superconducting qubits, fast-fabrication feedback, quantum computing, superconducting strategies for quantum information, quantum system optimization

Products: kiutra L-Type Rapid; ConScience QiB0