Sentence:  A detailed investigation of <WSD>decoherence</WSD> during gating due to a bosonic environment was performed in the original work of Loss and DiVincenzo. Since then, there have been many studies of leakage and <WSD>decoherence</WSD> in the context of the quantum-dot quantum computing proposal. 
Meaning of the word marked with <WSD> tags:  Loss of quantum coherence (phase relation between the quantum states of particles) in a physical system as it interacts with its environment.