91 citations · 235 across the 13 of their papers we have counts for
13 papers
Variance reduction methods in the estimation of Pauli sums
Søren Fuglede Jørgensen, Rafael Emilio Barfknecht, Patrick Ettenhuber +1
Accurately estimating expectation values of quantum observables with as few measurements as possible is crucial to many quantum computing applications. We introduce a framework tha…
Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
S. I. Mistakidis, A. G. Volosniev, R. E. Barfknecht +5
Cold atomic gases have become a paradigmatic system for exploring fundamental physics, which at the same time allows for applications in quantum technologies. The accelerating deve…
Flavour-selective localization in interacting lattice fermions via SU(N) symmetry breaking
Daniele Tusi, Lorenzo Franchi, Lorenzo Francesco Livi +10
A large repulsion between particles in a quantum system can lead to their localization, as it happens for the electrons in Mott insulating materials. This paradigm has recently bra…
Generation of spin currents by a temperature gradient in a two-terminal device
R. E. Barfknecht, A. Foerster, N. T. Zinner +1
Theoretical and experimental studies of the interaction between spins and temperature are vital for the development of spin caloritronics, as they dictate the design of future devi…
Engineering entanglement Hamiltonians with strongly interacting cold atoms in optical traps
R. E. Barfknecht, T. Mendes-Santos, L. Fallani
We present a proposal for the realization of entanglement Hamiltonians in one-dimensional critical spin systems with strongly interacting cold atoms. Our approach is based on the n…
Systematic interpolatory ansatz for one-dimensional polaron systems
E. J. Lindgren, R. E. Barfknecht, N. T. Zinner
We explore a new variational principle for studying one-dimensional quantum systems in a trapping potential. We focus on the Fermi polaron problem, where a single distinguishable i…