18 citations · 18 across the 2 of their papers we have counts for
2 papers
math.NA2008
The Inverse of a Nearly Banded Matrix
Ruitian Lang
A quantitative form of the Nullity Theorem is presented, which establishes a linear relation between the singular values of the two submatrices involved in the theorem up to the fi…
quant-ph2007★ 18 cited
Nonadditive quantum error correcting codes adapted to the ampltitude damping channel
Ruitian Lang, Peter W. Shor
A family of high rate quantum error correcting codes adapted to the amplitude damping channel is presented. These codes are nonadditive and exploit self-complementarity structure t…