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cubic_theory
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valbert4 committed May 23, 2024
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44 changes: 44 additions & 0 deletions codes/quantum/qubits/stabilizer/topological/cubic_theory.yml
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#######################################################
## This is a code entry in the error correction zoo. ##
## https://github.com/errorcorrectionzoo ##
#######################################################

code_id: cubic_theory
physical: qubits
logical: qubits

name: 'Cubic theory code'
introduced: '\cite{arxiv:2405.11719}'

alternative_names:
- 'Non-Abelian self-correcting quantum memory'
- 'Magic stabilizer code'

description: |
A geometrically local commuting-projector code defined on triangulations of lattices in five and higher spatial dimensions. Its code Hamiltonian terms include Pauli-\(Z\) operators and products of Pauli-\(X\) operators and \(CZ\) gates.
The Hamiltonian realizes higher-form \(\mathbb{Z}_2^3\) gauge theories whose excitations obey non-Abelian Ising-like fusion rules.
The construction is based on first constructing a model for an SPT phase \cite{arxiv:1106.4772,arxiv:1908.02613}, gauging its symmetries following Refs. \cite{arxiv:1202.3120,arxiv:1605.01640,arXiv:1806.08679}, and making all terms commute outside of the ground-state subspace by projecting them to zero flux.
features:
decoders:
- 'Probabilistic local cellular-automaton decoder \cite{arxiv:2405.11719}.'


relations:
parents:
- code_id: commuting_projector
- code_id: topological
detail: 'Cubic theory codes realize \(\geq 5\)-dimensional higher-form \(\mathbb{Z}_2^3\) gauge theories with non-Abelian excitations.'
cousins:
- code_id: self_correct
detail: 'A family of five-dimensional cubic theory codes with non-Abelian excitations is argued to be self-correcting below a critical temperature via a Peierls argument \cite{arxiv:2405.11719}.'


# Begin Entry Meta Information
_meta:
# Change log - most recent first
changelog:
- user_id: VictorVAlbert
date: '2024-05-23'
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Expand Up @@ -7,11 +7,12 @@ code_id: 4d_surface
physical: qubits
logical: qubits

name: '4D surface code'
name: 'Loop toric code'
introduced: '\cite{arxiv:quant-ph/0110143}'

alternative_names:
- 'Kitaev tesseract code'
- '4D surface code'

description: |
A generalization of the Kitaev surface code defined on a 4D lattice.
Expand All @@ -23,6 +24,8 @@ description: |
features:
general_gates:
- 'Logical \(CZ\), \(S\), and Hadamard gates \cite{arxiv:2405.11719}.'
code_capacity_threshold:
- 'Independent \(X,Z\) noise: \(2.117\%\) with Hastings decoder \cite{arxiv:1609.00510} and \(7.3\%\) with RG decoder for 4D surface code \cite{arxiv:1708.09286}.
It is conjectured via a statistical-mechanical mapping that the optimal ML decoder yields a threshold of \(11.003\%\) \cite{arxiv:hep-th/0310279}.'
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