Description
Lattice stabilizer code in two spatial dimensions.
Any prime-qudit code can be converted to several copies of the prime-qudit 2D surface code (i.e., \(\mathbb{Z}_2\) topological order) along with some trivial codes [1]. Any 2D topological order requires weight-four Hamiltonian terms, i.e., it cannot be stabilized via weight-two or weight-three terms on 2D lattices of qubits or qutrits [2–4].
There is a numerical procedure to construct all possible boundaries and twist defects associated with a given lattice code that admits a particular topological phase [5].
Decoding
Renormalization group (RG) decoder [6].Tensor-network based decoder for 2D codes subject to correlated noise [7].Standard stabilizer-based error correction can be performed even in the presence of perturbations to the codespace [8–10]; see also Refs. [11–13].Code Capacity Threshold
Noise thresholds can be formulated as anyon condensation transitions in a topological field theory [14], generalizing the mapping of the effect of noise on a code state to a statistical mechanical model [7,15–17]. Namely, the noise threshold for a noise channel \(\cal{E}\) acting on a 2D stabilizer state \(|\psi\rangle\) can be obtained from the properties of the resulting (mixed) state \(\mathcal{E}(|\psi\rangle\langle\psi|)\) [14,18–21].Cousins
- Kitaev surface code— Translation-invariant 2D qubit lattice stabilizer codes are equivalent to several copies of the Kitaev surface code via a local constant-depth Clifford circuit [22–24]. There exists an algorithm with which one can determine the fusion and braiding rules of a 2D translationally invariant qubit code, and decompose the given code into copies of the surface code [25].
- Abelian quantum-double stabilizer code— Translation-invariant 2D prime-qudit lattice stabilizer codes are equivalent to several copies of the prime-qudit surface code and a trivial code via a local constant-depth Clifford circuit [1].
- Holographic code— 2D lattice stabilizer codes admit a bulk-boundary correspondence similar to that of holographic codes, namely, the boundary Hilbert space of the former cannot be realized via local degrees of freedom [26].
- Quantum LDPC (QLDPC) code— Chain complexes describing QLDPC codes can be converted to 2D lattice stabilizer codes [27].
- Self-correcting quantum code— 2D stabilizer codes [28] and encodings of frustration-free code Hamiltonians [29] admit only constant-energy excitations, and so do not have an energy barrier.
Primary Hierarchy
Parents
2D lattice stabilizer code
Children
Bivariate bicycle codes are defined on 2D lattices with periodic boundary conditions, and versions with open boundary conditions have been investigated [5,30]. Bivariate bicycle codes are on par with the surface code in terms of threshold, but admit a much higher ancilla-added encoding rate at the expense of having non-geometrically local weight-six check operators.
All Abelian TQD codes can be realized as modular-qudit lattice stabilizer codes by starting with an Abelian quantum double model along with a family of Abelian TQDs that generalize the double semion anyon theory and condensing certain bosonic anyons [31]. Abelian TQD codes need not be translationally invariant and can realize multiple topological phases on one lattice.
References
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Page edit log
- Victor V. Albert (2024-01-27) — most recent
Cite as:
“2D lattice stabilizer code”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2024. https://errorcorrectionzoo.org/c/2d_stabilizer