Investigation of quantum correlation via current cross correlation measurement

我们在半导体上研制了一种飞行电荷量子比特器件，它适用于非局域纠缠的产生和量子比特的倍增。我们还开发了一种技术，可以通过耗尽的1D线在远距离量子点之间传输单个电子。结合这些技术应该允许在单个电子单元中创建非局部纠缠态，这对量子计算至关重要。我们还试图在超导体-正常金属结中分裂库珀对。在制备过程中，我们研究并揭示了石墨烯作为普通金属的基本电子性质。

We developed a flying charge qubit device on semiconductor, which is suitable for generation of non-local entanglement and qubit multiplication. We also developed a technology to transfer a single electron between distant quantum dots through a depleted 1D wire. Combining these technologies should allow for creation of a non-local entangled state in a single electron unit, which is essential for quantum computation. We also aimed for splitting Cooper pairs in superconductor-normal metal junctions. For preparation, we investigated and revealed basic electronic properties of graphene used as a normal metal.