Compare Papers
Paper 1
Error semitransparent universal control of a bosonic logical qubit
Saswata Roy, Owen C. Wetherbee, Valla Fatemi
- Year
- 2026
- Journal
- arXiv preprint
- DOI
- arXiv:2603.15356
- arXiv
- 2603.15356
Bosonic codes offer hardware-efficient approaches to logical qubit construction and hosted the first demonstration of beyond-break even logical quantum memory. However, such accomplishments were done for idling information, and realization of fault-tolerant logical operations remains a critical bottleneck for universal quantum computation in scaled systems. Error-transparent (ET) gates offer an avenue to resolve this issue, but experimental demonstrations have been limited to phase gates. Here, we introduce a framework based on dynamic encoding subspaces that enables simple linear drives to accomplish universal gates that are error semi-transparent (EsT) to oscillator photon loss. With an EsT logical gate set of {X, H, T}, we observe a five-fold reduction in infidelity conditioned on photon loss, demonstrate extended active-manipulation lifetimes with quantum error correction, and construct a composite EsT non-Clifford operation using a sequence of eight gates from the set. Our approach is compatible with methods for detectable ancilla errors, offering an approach to error-mitigated universal control of bosonic logical qubits with the standard quantum control toolkit.
Open paperPaper 2
Building a spin quantum bit register using semiconductor nanowires.
Baugh J, Fung JS, Mracek J, LaPierre RR.
- Year
- 2010
- Journal
- Nanotechnology
- DOI
- 10.1088/0957-4484/21/13/134018
- arXiv
- -
No abstract.
Open paper