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12 papers · 2 filters
Computations in Quantum Tensor Networks
T. Huckle, K. Waldherr, T. Schulte-Herbrueggen
The computation of the ground state (i.e. the eigenvector related to the smallest eigenvalue) is an important task in the simulation of quantum many-body systems. As the dimension…
Nonclassical Radiation from Thermal Cavities in the Ultrastrong Coupling Regime
Alessandro Ridolfo, Salvatore Savasta, Michael J. Hartmann
Thermal or chaotic light sources emit radiation characterized by a slightly enhanced probability of emitting photons in bunches, described by a zero-delay second-order correlation…
Quantum Information Processing with Nanomechanical Qubits
Simon Rips, Michael J. Hartmann
We introduce an approach to quantum information processing where the information is stored in the motional degrees of freedom of nanomechanical devices. The qubits of our approach…
Thermal emission in the ultrastrong coupling regime
A. Ridolfo, M. Leib, S. Savasta +1
We study thermal emission of a cavity quantum electrodynamic system in the ultrastrong-coupling regime where the atom-cavity coupling rate becomes comparable the cavity resonance f…
Low temperature investigations of single silicon vacancy colour centres in diamond
Elke Neu, Christian Hepp, Michael Hauschild +6
We study single silicon vacancy (SiV) centres in chemical vapour deposition (CVD) nanodiamonds on iridium as well as an ensemble of SiV centres in a high quality, low stress CVD di…
Entanglement, fractional magnetization and long-range interactions
Andrea Cadarso, Mikel Sanz, Michael M. Wolf +2
Based on the theory of Matrix Product States, we give precise statements and complete analytical proofs of the following claim: a large fractionalization in the magnetization or th…