



01177nas a2200145   4500008004100000245006100041210006100102260001500163490000700178520074000185100002400925700001800949700002000967856004400987       2006                        eng d00aError correcting codes for adiabatic quantum computation0 aError correcting codes for adiabatic quantum computation  c2006/11/140 v743 a  Recently, there has been growing interest in using adiabatic quantum
computation as an architecture for experimentally realizable quantum computers.
One of the reasons for this is the idea that the energy gap should provide some
inherent resistance to noise. It is now known that universal quantum
computation can be achieved adiabatically using 2-local Hamiltonians. The
energy gap in these Hamiltonians scales as an inverse polynomial in the problem
size. Here we present stabilizer codes which can be used to produce a constant
energy gap against 1-local and 2-local noise. The corresponding fault-tolerant
universal Hamiltonians are 4-local and 6-local respectively, which is the
optimal result achievable within this framework.
1 aJordan, Stephen, P.1 aFarhi, Edward1 aShor, Peter, W.  uhttp://arxiv.org/abs/quant-ph/0512170v3