Back to Search
Start Over
Numerical Implementation of Just-In-Time Decoding in Novel Lattice Slices Through the Three-Dimensional Surface Code
- Source :
- Quantum, Vol 6, p 721 (2022)
- Publication Year :
- 2022
- Publisher :
- Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften, 2022.
-
Abstract
- We build on recent work by B. Brown (Sci. Adv. 6, eaay4929 (2020)) to develop and simulate an explicit recipe for a just-in-time decoding scheme in three 3D surface codes, which can be used to implement a transversal (non-Clifford) $\overline{CCZ}$ between three 2D surface codes in time linear in the code distance. We present a fully detailed set of bounded-height lattice slices through the 3D codes which retain the code distance and measurement-error detecting properties of the full 3D code and admit a dimension-jumping process which expands from/collapses to 2D surface codes supported on the boundaries of each slice. At each timestep of the procedure the slices agree on a common set of overlapping qubits on which $CCZ$ should be applied. We use these slices to simulate the performance of a simple JIT decoder against stochastic $X$ and measurement errors and find evidence for a threshold $p_c \sim 0.1\%$ in all three codes. We expect that this threshold could be improved by optimisation of the decoder.
Details
- Language :
- English
- ISSN :
- 2521327X
- Volume :
- 6
- Database :
- Directory of Open Access Journals
- Journal :
- Quantum
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.f52454ef0d2479ca607bb5287d139d4
- Document Type :
- article
- Full Text :
- https://doi.org/10.22331/q-2022-05-24-721