The DX centre
T.N. Morgan
Semiconductor Science and Technology
We propose a scheme for dispersive readout of stored energy in one mode of a nonlinear-superconducting microwave ring resonator by detection of the frequency shift of a second mode coupled to the first via a Kerr nonlinearity. Symmetry is used to enhance the device responsivity while minimizing self-nonlinearity of each mode. Assessment of the signal to noise ratio indicates that the scheme will function at the single-photon level, allowing quantum nondemolition measurement of the photon-number state of one mode. Experimental data from a simplified version of the device demonstrating the principle of operation are presented. © 2010 The American Physical Society.
T.N. Morgan
Semiconductor Science and Technology
O.F. Schirmer, W. Berlinger, et al.
Solid State Communications
Mark W. Dowley
Solid State Communications
Julian J. Hsieh
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films