Nonlinear Coupling between the Two Oscillation Modes of a dc SQUID
Nonlinear Coupling between the Two Oscillation Modes of a dc SQUID
We make a detailed theoretical description of the two-dimensional nature of a dc SQUID, analyzing the coupling between its two orthogonal phase oscillation modes. While it has been shown that the mode defined as ``longitudinal'' can be initialized, manipulated, and measured, so as to encode a quantum bit of information, …