81 citations · 122 across the 3 of their papers we have counts for
6 papers
Efficient and feasible state tomography of quantum many-body systems
M. Ohliger, V. Nesme, J. Eisert
We present a novel method to perform quantum state tomography for many-particle systems which are particularly suitable for estimating states in lattice systems such as of ultra-co…
Efficient measurement-based quantum computing with continuous-variable systems
Matthias Ohliger, Jens Eisert
We present strictly efficient schemes for scalable measurement-based quantum computing using continuous-variable systems: These schemes are based on suitable non-Gaussian resource…
Continuous-variable quantum compressed sensing
Matthias Ohliger, Vincent Nesme, David Gross +2
We significantly extend recently developed methods to faithfully reconstruct unknown quantum states that are approximately low-rank, using only a few measurement settings. Our new…
Solving frustration-free spin systems
N. de Beaudrap, M. Ohliger, T. J. Osborne +1
We identify a large class of quantum many-body systems that can be solved exactly: natural frustration-free spin-1/2 nearest-neighbor Hamiltonians on arbitrary lattices. We show th…
Limitations of quantum computing with Gaussian cluster states
M. Ohliger, K. Kieling, J. Eisert
We discuss the potential and limitations of Gaussian cluster states for measurement-based quantum computing. Using a framework of Gaussian projected entangled pair states (GPEPS),…
Green's Function Approach to the Bose-Hubbard Model
Matthias Ohliger, Axel Pelster
We use a diagrammatic hopping expansion to calculate finite-temperature Green functions of the Bose-Hubbard model which describes bosons in an optical lattice. This technique allow…