Simulating decoherence behavior of a system in entangled state using nuclear magnetic resonance

摘要

By choosing H nucleus in Carbon-13 labelled trichloroethylene as one qubitenvironment, and two C nuclei as a two-qubit system, we have simulated quantumdecoherence when the system lies in an entangled state using nuclear magneticresonance (NMR). Decoupling technique is used to trace over the environmentdegrees of freedom. Experimental results show agreements with the theoreticalpredictions. Our experiment scheme can be generalized to the case thatenvironment is composed of multiple qubits.