期刊
PHYSICAL REVIEW A
卷 85, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.85.053833
关键词
-
资金
- University of Macau [SRG003-FST12-IH]
- LPS
- NSA
- ARO
- DARPA
- AFOSR
- National Science Foundation [0726909]
- JSPS-RFBR [09-02-92114]
- MEXT
- Funding Program for Innovative RD on ST
- National Natural Science Foundation of China [10975080, 61025022]
- Grants-in-Aid for Scientific Research [22224007, 21102002] Funding Source: KAKEN
When a chain of N superconducting qubits couples to a coplanar resonator, each of the qubits experiences a different dipole-field coupling strength due to the wave form of the cavity field. We find that this inhomogeneous coupling leads to a dependence of the collective ladder operators of the qubit chain on the qubit-interspacing l. Varying the spacing l changes the transition amplitudes between the angular momentum levels. We derive an exact diagonalization of the general N-qubit Hamiltonian and, through the N = 4 case, demonstrate how the l-dependent operators lead to a denser one-excitation spectrum and a probability redistribution of the eigenstates. Moreover, we show that the variation of l between its two limiting values coincides with the crossover between Frenkel- and Wannier-type excitons in the superconducting qubit chain.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据