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Steady states and oscillation modes of two driven dissipative oscillators with non-Hermitian coupling
Sahel Ashhab, Aakanksha Sud, Shunsuke Fukami
We analyze the dynamics of two harmonic oscillators with nonlinear, non-Hermitian coupling between them. Specifically, we consider a synthetic antiferromagnet composed of two ferro…
Order in the ground state of a simple cubic dipole lattice in an external field
S. Ashhab, M. Carignano, M. E. Madjet
Motivated by the presence of a lattice of rotating molecular dipoles in the high temperature phase of methylammonium lead iodide, we investigate the ground state of a simple cubic…
Quantum information processing using frequency control of impurity spins in diamond
A. M. Zagoskin, J. R. Johansson, S. Ashhab +1
Spin degrees of freedom of charged nitrogen-vacancy (NV) centers in diamond have large decoherence times even at room temperature, can be initialized and read out using optical…
Switchable coupling for superconducting qubits using double resonance in the presence of crosstalk
S. Ashhab, Franco Nori
Several methods have been proposed recently to achieve switchable coupling between superconducting qubits. We discuss some of the main considerations regarding the feasibility of i…