De Martini Francesco, Sciarrino Fabio, Spagnolo Nicolò
Dipartimento di Fisica dell'Universitá La Sapienza and Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Roma 00185, Italy.
Phys Rev Lett. 2009 Sep 4;103(10):100501. doi: 10.1103/PhysRevLett.103.100501. Epub 2009 Sep 1.
We show that all macroscopic quantum superpositions (MQS) based on phase-covariant quantum cloning are characterized by an anomalous high resilence to the decoherence processes. The analysis supports the results of recent MQS experiments and leads to conceive a useful conjecture regarding the realization of complex decoherence-free structures for quantum information, such as the quantum computer.
我们表明，基于相位协变量子克隆的所有宏观量子叠加（MQS）都具有对退相干过程异常高的恢复能力。该分析支持了最近MQS实验的结果，并促使人们对实现用于量子信息的复杂无退相干结构（如量子计算机）提出一个有用的猜想。
