19 citations · 41 across the 5 of their papers we have counts for
7 papers
Multiqubit Rydberg Gates for Quantum Error Correction
David F. Locher, Josias Old, Katharina Brechtelsbauer +4
Multiqubit gates that involve three or more qubits are usually thought to be of little significance for fault-tolerant quantum error correction because single gate faults can lead…
Addressable fault-tolerant universal quantum gate operations for high-rate lift-connected surface codes
Josias Old, Juval Bechar, Markus Müller +1
Quantum low-density parity check (qLDPC) codes are among the leading candidates to realize error-corrected quantum memories with low qubit overhead. Potentially high encoding rates…
Fault-Tolerant Stabilizer Measurements in Surface Codes with Three-Qubit Gates
Josias Old, Stephan Tasler, Michael J. Hartmann +1
Quantum error correction (QEC) is considered a deciding component in enabling practical quantum computing. Stabilizer codes, and in particular topological surface codes, are promis…
Optimizing Superconducting Three-Qubit Gates for Surface-Code Error Correction
Stephan Tasler, Josias Old, Lukas Heunisch +4
Quantum error correction (QEC) is one of the crucial building blocks for developing quantum computers that have significant potential for reaching a quantum advantage in applicatio…
XYZ ruby code: Making a case for a three-colored graphical calculus for quantum error correction in spacetime
Julio C. Magdalena de la Fuente, Josias Old, Alex Townsend-Teague +3
Analyzing and developing new quantum error-correcting schemes is one of the most prominent tasks in quantum computing research. In such efforts, introducing time dynamics explicitl…
Lift-Connected Surface Codes
Josias Old, Manuel Rispler, Markus Müller
We use the recently introduced lifted product to construct a family of Quantum Low Density Parity Check Codes (QLDPC codes). The codes we obtain can be viewed as stacks of surface…
Generalized Belief Propagation Algorithms for Decoding of Surface Codes
Josias Old, Manuel Rispler
Belief propagation (BP) is well-known as a low complexity decoding algorithm with a strong performance for important classes of quantum error correcting codes, e.g. notably for the…