3.9k citations
- Institute for Quantum Optics and Quantum Information InnsbruckAT973 papers
- Universität InnsbruckAT944 papers
- Institute of High Energy PhysicsCN842 papers
- University of ViennaAT835 papers
- Centre National de la Recherche ScientifiqueFR824 papers
- Space Research InstituteRU795 papers
- European Organization for Nuclear ResearchCH470 papers
- ETH ZurichCH461 papers
- Korea UniversityKR441 papers
- National Taiwan UniversityTW436 papers
- Panjab UniversityIN432 papers
- Sungkyunkwan UniversityKR432 papers
37 papers · 2 filters
Steady state entanglement in open and noisy quantum systems at high temperature
L. Hartmann, W. Dür, H. -J. Briegel
We show that quantum mechanical entanglement can prevail even in noisy open quantum systems at high temperature and far from thermodynamical equilibrium, despite the deteriorating…
Nonlinear entanglement witnesses
Otfried Gühne, Norbert Lütkenhaus
Entanglement detection typically relies on linear inequalities for mean values of certain observables (entanglement witnesses), where violation indicates entanglement. We provide a…
Fast Rydberg gates without dipole blockade via quantum control
M. Cozzini, T. Calarco, A. Recati +1
We propose a scheme for controlling interactions between Rydberg-excited neutral atoms in order to perform a fast high-fidelity quantum gate. Unlike dipole-blockade mechanisms alre…
Experimental Quantum Cryptography with Qutrits
Simon Groeblacher, Thomas Jennewein, Alipasha Vaziri +2
We produce two identical keys using, for the first time, entangled trinary quantum systems (qutrits) for quantum key distribution. The advantage of qutrits over the normally used b…
Energy and multipartite entanglement in multidimensional and frustrated spin models
Otfried Gühne, Geza Toth
We investigate the relation between the entanglement properties of a quantum state and its energy for macroscopic spin models. To this aim, we develop a general method to compute e…
Unconditional two-mode squeezing of separated atomic ensembles
A. S. Parkins, E. Solano, J. I. Cirac
We propose schemes for the unconditional preparation of a two-mode squeezed state of effective bosonic modes realized in a pair of atomic ensembles interacting collectively with op…