QDistRnd: A GAP package for computing the distance of quantum error-correcting codes

The GAP package QDistRnd implements a probabilistic algorithm for finding the minimum distance of quantum low-density parity-check code linear over finite field GF(q). At each step several codewords are randomly drawn from distribution biased toward smaller weights. corresponding weights used to update upper bound on distance, which eventually converges code. While there is no performance guarantee, an empirical convergence criterion given estimate probability that weight codeword has been found. In addition, format storing matrices associated with q-ary codes introduced and implemented via provided import/export functions. format, MTXE, based well established MaTrix market eXchange (MTX) Coordinate developed at NIST, designed full backward compatibility this format. Thus, MTXE files readable by any software supports MTX.