论文标题
可调频谱缩小，使石墨烯值在室温下的功能
Tunable spectral narrowing enabling the functionality of graphene qubit circuits at room temperature
论文作者
论文摘要
使用DIRAC方程和S-Matrix技术研究了基于石墨烯条纹（ZZ-Stripes）的石墨烯条纹（ZZ-Stripes）的量子点簇和阵列中的电气控制量子相干性。我们发现，当连贯性时间延长了几个数量级，通过固有的光谱延长，由于固有光谱的延长，多个多Quipt的电路有望稳定的操作，直到室温，由于相邻部分的频带之间的电子传输，因此通过固有的光谱缩小。量子位与嘈杂环境的耦合分别减少，而无弹性电子散射被抑制。 Stark分裂技术可以实现广泛的操作，例如所有{能量水平位置和宽度，水平分裂，控制量之间耦合的电气调整以及相干时间。在谐振能量下，相位相干性在数千个时期扩散。这种现象可能可以用于室温下的量子计算和通信应用中。
Electrically controllable quantum coherence in quantum dot clusters and arrays based on graphene stripes with zigzag atomic edges (ZZ-stripes) is studied using the Dirac equation and S-matrix technique. We find that respective multiqubit circuits promise stable operation up to room temperatures when the coherence time is prolonged up by a few orders of magnitude through the intrinsic spectral narrowing owing to electron transport between at bands in adjacent sections. Respectively, the coupling of qubits to a noisy environment is diminished, while the inelastic electron-phonon scattering is suppressed. The Stark splitting technique enables a broad range of operations such as all{electrical tuning of the energy level positions and width, level splitting, controlling of the inter-qubit coupling, and the coherence time. At the resonant energies, the phase coherence spreads over thousands of periods. Such phenomena potentially can be utilized in quantum computing and communication applications at room temperature.
