In this paper, we study the hulls of $ \mathbb{Z}_p\mathbb{Z}_p[v] $- cyclic codes for any prime $ p $, where $ v^2 = v $. Firstly, we derive the generator polynomials of the hulls of separable cyclic codes (SCCs) over $ \mathbb{Z}_p\mathbb{Z}_p[v] $ and determine their dimensions using the concept of a generating function in combinatorics. We also enumerate the SCCs over $ \mathbb{Z}_p\mathbb{Z}_p[v] $ with hulls of a fixed dimension. Next, we present the generator polynomials of the hulls of non-separable cyclic codes (NSCCs) over $ \mathbb{Z}_2\mathbb{Z}_2[v] $ with coprime odd block lengths and determine their dimensions. Additionally, we enumerate the NSCCs over $ \mathbb{Z}_2\mathbb{Z}_2[v] $ with hulls of a fixed dimension. As an application, we use the hulls of NSCCs over $ \mathbb{Z}_2\mathbb{Z}_2[v] $ to construct some good entanglement-assisted quantum error-correcting codes (EAQECCs).
We investigate the quantum phase diagram of the XY toric code (XYTC) on the kagome lattice consisting of
XY hexagonal and triangular plaquette operators and conserved star operators. We demonstrate analytically by exploiting an exact local
Z2-symmetry on dodecagons that the kagome XYTC realizes a
Z2×Z2×Z2 topologically ordered phase in the limit of large hexagonal \mbox{plaquette} operators. This unconventional topological phase involves 64 quasi-particles - Abelian anyons - with restricted mobility on three colored sublattices establishing a quantum dimension of eight. The large number of topological superselection sectors originates from six independent Wilson loop operators, acting as emergent one-form symmetries. The resulting anyon structure is richer than that of established topological codes like the toric and the color code. A corresponding CSS topological stabilizer code is formulated, opening novel possibilities for the encoding and manipulation of topological quantum information.