26 citations · 35 across the 7 of their papers we have counts for
8 papers
Grover Search with Semiconductor Spin Qubits at Ambient Conditions
Sebastian Gemsheim, Fabian Klüpfel, Max Kneiß +8
Grover's algorithm is executed on a commercial quantum computer based on nitrogen-vacancy centers in diamond operating under ambient conditions, achieving fidelities up to $99.98\,…
Sampling Continuous Quantum Dynamics from a Single Static State
Sebastian Gemsheim, Felix Fritzsch
While quantum simulation is one of the most promising applications of modern quantum devices, accessible simulation times are fundamentally limited by finite coherence times due to…
A link between static and dynamical perturbation theory
Sebastian Gemsheim
Dynamics, the physical change in time and a pillar of natural sciences, can be regarded as an emergent phenomenon when the system of interest is part of a larger, static one. This…
Statistical mechanics from relational complex time with a pure state
Sebastian Gemsheim, Jan M. Rost
Thermodynamics and its quantum counterpart are traditionally described with statistical ensembles. Canonical typicality has related statistical mechanics for a system to ensembles…
The emergence of time from quantum interaction with the environment
Sebastian Gemsheim, Jan M. Rost
The nature of time as emergent for a system by separating it from its environment has been put forward by Page and Wootters [D. N. Page and W. K. Wootters, Phys. Rev. D 27, 2885 (1…
High Harmonic Generation with Twisted Electrons
Sebastian Gemsheim, Jan-Michael Rost
We present analytically and numerically the spectrum of high harmonic emission generated by twisted electrons in the presence of linearly polarized light. Ensuing transitions from…
Order parameter dynamics of the non-linear sigma model in the large limit
Sebastian Gemsheim, Ipsita Mandal, Krishnendu Sengupta +1
We study non-equilibrium order parameter dynamics of the non-linear sigma model in the large limit, using Keldysh formalism. We provide a scheme for obtaining stable numerical…
Emergence of topological Mott insulators in proximity of quadratic band touching points
I. Mandal, S. Gemsheim
Recently, the field of strongly correlated electrons has begun an intense search for a correlation induced topological insulating phase. An example is the quadratic band touching p…