94 citations · 301 across the 16 of their papers we have counts for
6 papers · 1 filter
Dipole-dipole-interaction-induced entanglement between two-dimensional ferromagnets
Dennis Wuhrer, Niklas Rohling, Wolfgang Belzig
We investigate the viability of dipole-dipole interaction as a means of entangling two distant ferromagnets. To this end we make use of the Bogoliubov transformation as a symplecti…
Discovery of an exchange-only gate sequence for CNOT with record-low gate time using reinforcement learning
Violeta N. Ivanova-Rohling, Niklas Rohling, Guido Burkard
Exchange-only quantum computation is a version of spin-based quantum computation that entirely avoids the difficulty of controlling individual spins by a magnetic field and instead…
Optimal Quantum State Tomography with Noisy Gates
Violeta N. Ivanova-Rohling, Niklas Rohling, Guido Burkard
Quantum state tomography (QST) represents an essential tool for the characterization, verification, and validation (QCVV) of quantum processors. Only for a few idealized scenarios,…
Quantum state tomography as a numerical optimization problem
Violeta N. Ivanova-Rohling, Guido Burkard, Niklas Rohling
We present a framework that formulates the quest for the most efficient quantum state tomography scheme as an optimization problem which can be solved numerically. This approach ca…
Optimal choice of state tomography quorum formed by projection operators
Violeta N. Ivanova-Rohling, Niklas Rohling
A minimal set of measurement operators for quantum state tomography has in the non-degenerate case ideally eigenbases which are mutually unbiased. This is different for the degener…
Tomography scheme for two spin-1/2 qubits in a double quantum dot
Niklas Rohling, Guido Burkard
We present a scheme for full quantum state tomography tailored for two spin qubits in a double quantum dot. A set of 15 quantum states allows to determine the density matrix in thi…