434 citations · 2.3k across the 71 of their papers we have counts for
5 papers · 1 filter
Effect of weak magnetic field on quantum spin correlation in an s-wave superconductor
R. Afzali, A. T. Rezakhani, H. R. Alborznia
We study the effect of a weak magnetic field on the state of the spins of a pair of electrons forming a Cooper pair in an s-wave superconductor. By perturbatively solving time-depe…
Quantum process tomography with coherent states
Saleh Rahimi-Keshari, Artur Scherer, Ady Mann +3
We develop an enhanced technique for characterizing quantum optical processes based on probing unknown quantum processes only with coherent states. Our method substantially improve…
Accuracy vs run time in adiabatic quantum search
A. T. Rezakhani, A. K. Pimachev, D. A. Lidar
Adiabatic quantum algorithms are characterized by their run time and accuracy. The relation between the two is essential for quantifying adiabatic algorithmic performance, yet is o…
Intrinsic geometry of quantum adiabatic evolution and quantum phase transitions
Ali T. Rezakhani, Damian F. Abasto, Daniel A. Lidar +1
We elucidate the geometry of quantum adiabatic evolution. By minimizing the deviation from adiabaticity we find a Riemannian metric tensor underlying adiabatic evolution. Equipped…
Control-Induced Decoherence-Free Manifolds
E. Jonckheere, A. Shabani, A. T. Rezakhani
Quantum coherence of open quantum systems is usually compromised because of the interaction with the ambient environment. A "decoherence-free subspace" (DFS) of the system Hilbert…