5 papers
Investigating a (3+1)D Topological -Term in the Hamiltonian Formulation of Lattice Gauge Theories for Quantum and Classical Simulations
Angus Kan, Lena Funcke, Stefan Kühn +5
Quantum technologies offer the prospect to efficiently simulate sign-problem afflicted regimes in lattice field theory, such as the presence of topological terms, chemical potentia…
Parallel selective nuclear spin addressing for fast high-fidelity quantum gates
Benedikt Tratzmiller, Jan F. Haase, Zhenyu Wang +1
Due to their long coherence times, nuclear spins have gained considerable attention as physical qubits. Two-qubit gates between nuclear spins of distinct resonance frequencies can…
A resource efficient approach for quantum and classical simulations of gauge theories in particle physics
Jan F. Haase, Luca Dellantonio, Alessio Celi +4
Gauge theories establish the standard model of particle physics, and lattice gauge theory (LGT) calculations employing Markov Chain Monte Carlo (MCMC) methods have been pivotal in…
Precision Limits in Quantum Metrology with Open Quantum Systems
Jan F. Haase, Andrea Smirne, Jan Kołodyński +2
The laws of quantum mechanics allow to perform measurements whose precision supersedes results predicted by classical parameter estimation theory. That is, the precision bound impo…
Controllable Non-Markovianity for a Spin Qubit in Diamond
Jan F. Haase, Philipp J. Vetter, Thomas Unden +7
We present a flexible scheme to realize non-artificial non-Markovian dynamics of an electronic spin qubit, using a nitrogen-vacancy center in diamond where the inherent nitrogen sp…