6533b7cffe1ef96bd12598d0
RESEARCH PRODUCT
Simulation of many-qubit quantum computation with matrix product states
M. C. BañulsA. PérezRoman OrusJosé I. LatorreP. Ruiz-femeníasubject
PhysicsQuantum PhysicsQuantum networkQuantum registerFOS: Physical sciencesComputational Physics (physics.comp-ph)Adiabatic quantum computationAtomic and Molecular Physics and OpticsPartícules (Física nuclear)Condensed Matter - Other Condensed MatterQuantum gateQuantum error correctionQubitQuantum mechanicsQuantum algorithmStatistical physicsCamps Teoria quàntica deQuantum Physics (quant-ph)Physics - Computational PhysicsOther Condensed Matter (cond-mat.other)Quantum computerdescription
Matrix product states provide a natural entanglement basis to represent a quantum register and operate quantum gates on it. This scheme can be materialized to simulate a quantum adiabatic algorithm solving hard instances of a NP-Complete problem. Errors inherent to truncations of the exact action of interacting gates are controlled by the size of the matrices in the representation. The property of finding the right solution for an instance and the expected value of the energy are found to be remarkably robust against these errors. As a symbolic example, we simulate the algorithm solving a 100-qubit hard instance, that is, finding the correct product state out of ~ 10^30 possibilities. Accumulated statistics for up to 60 qubits point at a slow growth of the average minimum time to solve hard instances with highly-truncated simulations of adiabatic quantum evolution.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-01-01 |