Long-lived memory for mesoscopic quantum bits.

摘要: We describe a technique to create long-lived quantum memory for bits in mesoscopic systems. Specifically we show that electronic spin coherence can be reversibly mapped onto the collective state of surrounding nuclei. The coherent transfer efficient and fast it used, when combined with standard resonance techniques, store superpositions on time scale seconds. This method also allow "engineering" entangled states nuclear ensembles efficiently manipulating stored states. investigate feasibility this through detailed analysis properties system.