675 citations · 5.6k across the 111 of their papers we have counts for
111 papers
Nonequilibrium effects in spin-torque oscillators
Pieter M. Gunnink, Tim Ludwig, Alexander Shnirman +1
One of the cornerstones of spintronics is the application of a spin-transfer torque to a nanomagnet, driving the magnetization of the nanomagnet into a steady-state precession and…
Topological transitions in quantum jump dynamics: Hidden exceptional points
Andrei I. Pavlov, Yuval Gefen, Alexander Shnirman
Complex spectra of dissipative quantum systems may exhibit degeneracies known as exceptional points (EPs). At these points the systems' dynamics may undergo drastic changes. Phenom…
Solomon equations for qubit and two-level systems: Insights into non-Poissonian quantum jumps
Martin Spiecker, Andrei I. Pavlov, Alexander Shnirman +1
We measure and model the combined relaxation of a qubit coupled to a discrete two-level system~(TLS) environment, also known as the central spin model. If the TLSs are much longer-…
Qubit dephasing by spectrally diffusing quantum two-level systems
Shlomi Matityahu, Alexander Shnirman, Moshe Schechter
We investigate the pure dephasing of a Josephson qubit due to the spectral diffusion of two-level systems that are close to resonance with the qubit. We identify the parameter regi…
Mitigating crosstalk errors by randomized compiling: Simulation of the BCS model on a superconducting quantum computer
Hugo Perrin, Thibault Scoquart, Alexander Shnirman +2
We develop and apply an extension of the randomized compiling (RC) protocol that includes a special treatment of neighboring qubits and dramatically reduces crosstalk effects cause…
Magnetization Dynamics and Peierls Instability in Topological Josephson Structures
Adrian Reich, Erez Berg, Jörg Schmalian +1
We study a long topological Josephson junction with a ferromagnetic strip between two superconductors. The low-energy theory exhibits a non-local in time and space interaction betw…