CAJ | 학술논문

为了充分理解固体量子系统中量子纠缠的实现和调控,针对一种超导约瑟逊电荷量子比特电路系统,给定初态,求解演化方程研究末态的纠缠情况。通过变频操作来开关电荷量子比特之间的耦合,选择合适的调节频率Ω和耦合能χ,可以保证无纠缠或非最大纠缠的初态都能演化为最大纠缠态。这种超导约瑟夫逊电荷量子比特电路系统可以用来充当量子纠缠通道,实现信息的隐形传输,也可以充当量子中继器。
위료충분리해고체양자계통중양자규전적실현화조공,침대일충초도약슬손전하양자비특전로계통,급정초태,구해연화방정연구말태적규전정황。통과변빈조작래개관전하양자비특지간적우합,선택합괄적조절빈솔Ω화우합능χ,가이보증무규전혹비최대규전적초태도능연화위최대규전태。저충초도약슬부손전하양자비특전로계통가이용래충당양자규전통도,실현신식적은형전수,야가이충당양자중계기。
In order to fully understand the implementation and control of the entanglement of solid quantum system in a superconducting Josephson charge qubit system,for a given initial state,solving the equation of evolution to study the entanglement of final-state.Then using frequency conversion manipulation to couple the two charge qubits,and choosing proper frequency Ω and interbit coupling χ,one can make a separate state or non-maximally entangled state to evolve as a maximally entangled state.This kind of super conductor Josephson junction circuit system can be acted as quantum channel to realize teleportation or acted as quantum repeater.