595 citations · 2.4k across the 25 of their papers we have counts for
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Minimal models for nonreciprocal amplification using biharmonic drives
A. Kamal, A. Metelmann
We present a generic system of three harmonic modes coupled parametrically with a time-varying coupling modulated by a combination of two pump harmonics, and show how this system p…
Improved superconducting qubit coherence with high-temperature substrate annealing
Archana Kamal, Jonilyn L. Yoder, Fei Yan +7
We assess independently the impact of high-temperature substrate annealing and metal deposition conditions on the coherence of transmon qubits in the standard 2D circuit-QED archit…
Asymmetric frequency conversion in nonlinear systems driven by a biharmonic pump
Archana Kamal, Ananda Roy, John Clarke +1
A novel mechanism of asymmetric frequency conversion is investigated in nonlinear dispersive devices driven parametrically with a biharmonic pump. When the relative phase between t…
Noiseless nonreciprocity in a parametric active device
Archana Kamal, John Clarke, Michel Devoret
Nonreciprocal devices such as circulators and isolators belong to an important class of microwave components employed in applications like the measurement of mesoscopic circuits at…
Signal-to-pump back-action and self-oscillation in Double-Pump Josephson Parametric Amplifier
Archana Kamal, Adam Marblestone, Michel Devoret
We present the theory of a Josephson parametric amplifier employing two pump sources. Our calculations are based on Input-Output Theory, and can easily be generalized to any couple…