Three-fermion (3F) Walker-Wang model code[1,2] 

Description

A 3D lattice stabilizer code whose low-energy excitations on boundaries realize a 3D time-reversal SPT order [1] and that can be used as a resource state for fault-tolerant MBQC [2]. The anyons at the boundary of the lattice are described by the 3F anyon theory.

Encoding

3F QCA encoder [3,4], which can be simplified using bosonization [5] and can be extended to SPTs in higher dimensions based on an exact bosonization duality [6].

Gates

Clifford gates can be performed by braiding and fusing symmetry defects in the MBQC model.

Fault Tolerance

Fault-tolerant MBQC protocol by encoding in, braiding, and fusing symmetry defects.

Parents

  • Qubit stabilizer code
  • 3D lattice stabilizer code
  • Walker-Wang model code — The Walker-Wang model code reduces to the 3F model code when the input category \(\mathcal{C}=3F\) [2]. When treated as ground states of the code Hamiltonian, 3F Walker-Wang model code states realize a 3D time-reversal SPT order [1]. The anyons at the boundary of the lattice are described by the 3F anyon theory.
  • Symmetry-protected topological (SPT) code — When treated as ground states of the code Hamiltonian, 3F Walker-Wang model code states realize a 3D time-reversal SPT order [1]. The 3F Walker-Wang QCA encoder [3,4] can be extended to SPTs in higher dimensions based on an exact bosonization duality [6].

Cousins

  • 3D bosonization code — The 3F Walker-Wang QCA encoder [3,4] can be simplified using bosonization [5].
  • Bosonization code — The 3F Walker-Wang QCA encoder [3,4] can be extended to SPTs in higher dimensions based on an exact bosonization duality [6].
  • Abelian topological code — When treated as ground states of the code Hamiltonian, 3F Walker-Wang model code states realize a 3D time-reversal SPT order [1]. The anyons at the boundary of the lattice are described by the 3F anyon theory.
  • Three-fermion (3F) subsystem code — The (three-dimensional) 3F Walker-Wang model cluster-like state encodes the temporal gate operations on the (two-dimensional) 3F subsystem code into a third spatial dimension [2].

References

[1]
F. J. Burnell, X. Chen, L. Fidkowski, and A. Vishwanath, “Exactly soluble model of a three-dimensional symmetry-protected topological phase of bosons with surface topological order”, Physical Review B 90, (2014) arXiv:1302.7072 DOI
[2]
S. Roberts and D. J. Williamson, “3-Fermion Topological Quantum Computation”, PRX Quantum 5, (2024) arXiv:2011.04693 DOI
[3]
J. Haah, L. Fidkowski, and M. B. Hastings, “Nontrivial Quantum Cellular Automata in Higher Dimensions”, Communications in Mathematical Physics 398, 469 (2022) arXiv:1812.01625 DOI
[4]
J. Haah, “Topological phases of unitary dynamics: Classification in Clifford category”, (2024) arXiv:2205.09141
[5]
L. Fidkowski and M. B. Hastings, “Pumping Chirality in Three Dimensions”, (2024) arXiv:2309.15903
[6]
L. Fidkowski, J. Haah, and M. B. Hastings, “A QCA for every SPT”, (2024) arXiv:2407.07951
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Zoo Code ID: three_fermion

Cite as:
“Three-fermion (3F) Walker-Wang model code”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2023. https://errorcorrectionzoo.org/c/three_fermion
BibTeX:
@incollection{eczoo_three_fermion, title={Three-fermion (3F) Walker-Wang model code}, booktitle={The Error Correction Zoo}, year={2023}, editor={Albert, Victor V. and Faist, Philippe}, url={https://errorcorrectionzoo.org/c/three_fermion} }
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Cite as:

“Three-fermion (3F) Walker-Wang model code”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2023. https://errorcorrectionzoo.org/c/three_fermion

Github: https://github.com/errorcorrectionzoo/eczoo_data/edit/main/codes/quantum/qubits/stabilizer/topological/three_fermion.yml.