Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Korea.
J Phys Condens Matter. 2010 Sep 8;22(35):355301. doi: 10.1088/0953-8984/22/35/355301. Epub 2010 Aug 10.
We propose a scheme of strong and tunable coupling between a superconducting phase qubit and a nanomechanical torsional resonator. In our scheme the torsional resonator directly modulates the largest energy scale (the Josephson coupling energy) of the phase qubit, and the coupling strength is very large. We analyze the quantum correlation effects in the torsional resonator as a result of the strong coupling to the phase qubit.
我们提出了一种超导相位量子比特与纳米机械扭转谐振器之间强且可调谐耦合的方案。在我们的方案中，扭转谐振器直接调制相位量子比特的最大能量尺度（约瑟夫森耦合能量），并且耦合强度非常大。我们分析了由于与相位量子比特的强耦合而导致的扭转谐振器中的量子关联效应。
