Local stabilizer codes in three dimensions without string logical operators
2011; American Physical Society; Volume: 83; Issue: 4 Linguagem: Inglês
10.1103/physreva.83.042330
ISSN1538-4446
Autores Tópico(s)Advanced Memory and Neural Computing
ResumoWe suggest concrete models for self-correcting quantum memory by reporting examples of local stabilizer codes in 3D that have no string logical operators. Previously known local stabilizer codes in 3D all have string-like logical operators, which make the codes non-self-correcting. We introduce a notion of "logical string segments" to avoid difficulties in defining one dimensional objects in discrete lattices. We prove that every string-like logical operator of our code can be deformed to a disjoint union of short segments, and each segment is in the stabilizer group. The code has surface-like logical operators whose partial implementation has unsatisfied stabilizers along its boundary.
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