21.7k citations
- Imperial College LondonGB119 papers
- University of OxfordGB11 papers
- The University of SydneyAU6 papers
- Institute for Quantum Optics and Quantum Information InnsbruckAT5 papers
- Universität InnsbruckAT5 papers
- University of CambridgeGB5 papers
- University of HertfordshireGB5 papers
- Austrian Academy of SciencesAT4 papers
- Queen Mary University of LondonGB4 papers
- Tel Aviv UniversityIL4 papers
- University College LondonGB4 papers
- University of PotsdamDE4 papers
23 papers · 2 filters
Geometric Phases and Critical Phenomena in a Chain of Interacting Spins
M. E. Reuter, M. J. Hartmann, M. B. Plenio
The geometric phase can act as a signature for critical regions of interacting spin chains in the limit where the corresponding circuit in parameter space is shrunk to a point and…
General linear-optical quantum state generation scheme: Applications to maximally path-entangled states
N. M. VanMeter, P. Lougovski, D. B. Uskov +3
We introduce schemes for linear-optical quantum state generation. A quantum state generator is a device that prepares a desired quantum state using product inputs from photon sourc…
Covariance matrices and the separability problem
O. Gühne, P. Hyllus, O. Gittsovich +1
We propose a unifying approach to the separability problem using covariance matrices of locally measurable observables. From a practical point of view, our approach leads to strong…
Percolation, renormalization, and quantum computing with non-deterministic gates
K. Kieling, T. Rudolph, J. Eisert
We apply a notion of static renormalization to the preparation of entangled states for quantum computing, exploiting ideas from percolation theory. Such a strategy yields a novel w…
Evenly distributed unitaries: on the structure of unitary designs
D. Gross, K. Audenaert, J. Eisert
We clarify the mathematical structure underlying unitary -designs. These are sets of unitary matrices, evenly distributed in the sense that the average of any -th order polyn…
A simple nearest-neighbor two-body Hamiltonian system for which the ground state is a universal resource for quantum computation
Stephen D. Bartlett, Terry Rudolph
We present a simple quantum many-body system - a two-dimensional lattice of qubits with a Hamiltonian composed of nearest-neighbor two-body interactions - such that the ground stat…