Experimental Realization of Noiseless Subsystems for Quantum Information Processing

• DOI: 10.1126/science.1064460
• Publication Date: 2002-07-27T09:52:08Z
• Authors: Lorenza Viola; Evan M. Fortunato; Marco A. Pravia; Emanuel Knill; Raymond Laflamme; David G. Cory
• Keywords: Robustness; Realization (probability); Quantum information processing

We demonstrate the protection of one bit quantum information against all collective noise in three nuclear spins. Because no subspace states offers this protection, was encoded a proper noiseless subsystem. therefore realize general and efficient method for protecting information. Robustness verified full set operators that do not distinguish Verification relied on most complete exploration engineered decoherence to date. The achieved fidelities show improved storage large, noncommutative errors.