Maximal entanglement-assisted quantum error correction codes from the skew group ring
F4⋊φG by a heuristic search scheme
Abstract In this paper, we explore the algebraic structure of skew-G codes over the ring
A=F4[u,v]/⟨u2,v2,uv−vu⟩ A = F 4 [ u , v ] / ⟨ u 2 , v 2 , u v - v u ⟩ . In addition to that, we bridge theoretical results with practical applications in quantum computing. More specifically, we derive a significant number of new binary EAQEC codes from the gray images of the skew-G codes over A according to Grassl’s codetable [14].
Entanglement-assisted quantum error-correcting codes (EAQECCs) make use of preexisting entanglement between the sender and receiver to boost the rate of transmission. It is possible to construct an EAQECC from any classical linear code, unlike standard quantum error-correcting codes, which can only be constructed from dual-containing codes. However, the parameter of ebits
c is usually calculated by computer search. In this paper, we construct four classes of MDS entanglement-assisted quantum error-correcting codes (MDS EAQECCs) based on
k-Galois LCD MDS codes for some certain code lengths, where the parameter of ebits
c can be easily generated algebraically and not by computational search. Moreover, the constructed four classes of EAQECCs are also maximal-entanglement EAQECCs.
Entanglement-assisted quantum error-correcting (EAQEC) codes make use of preexisting entanglement between the sender and receiver to boost the rate of transmission. It is possible to construct an EAQEC code from any classical linear code, unlike standard quantum error-correcting codes, which can only be constructed from dual-containing codes. However, the number
c of pre-shared maximally entangled states is usually calculated by computer search. In this paper, we first give a new formula for calculating the number
c of pre-shared maximally entangled states. Then, using this formula, we construct three classes of new entanglement-assisted quantum error-correcting maximum-distance-separable ( EAQEC MDS) codes.