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38 papers · 2 filters
Efficient optical pumping and high optical depth in a hollow-core photonic-crystal fibre for a broadband quantum memory
Michael R. Sprague, Duncan G. England, Amir Abdolvand +9
The generation of large multiphoton quantum states - for applications in computing, metrology, and simulation - requires a network of high-efficiency quantum memories capable of st…
Coherent Logic Gate for Light Pulses based on Storage in a Bose-Einstein Condensate
Christoph Vo, Stefan Riedl, Simon Baur +2
A classical logic gate connecting input and output light pulses is demonstrated. The gate operation is based on three steps: First, two incoming light pulses are stored in a Bose-E…
Quantum-Dense Metrology
Sebastian Steinlechner, Jöran Bauchrowitz, Melanie Meinders +3
Quantum metrology utilizes entanglement for improving the sensitivity of measurements. Up to now the focus has been on the measurement of just one out of two non-commuting observab…
A cold-atom quantum simulator for SU(2) Yang-Mills lattice gauge theory
Erez Zohar, J. Ignacio Cirac, Benni Reznik
Non-abelian gauge theories play an important role in the standard model of particle physics, and unfold a partially unexplored world of exciting physical phenomena. In this letter,…
Topological Phenomena in Trapped Ion Systems
T. Shi, J. I. Cirac
We propose and analyze a scheme to observe topological phenomena with ions in microtraps. We consider a set of trapped ions forming a regular structure in two spatial dimensions an…
Manipulating energy and spin currents in nonequilibrium systems of interacting qubits
Vladislav Popkov, Roberto Livi
We consider generic interacting chain of qubits, which are coupled at the edges to baths of fixed polarizations. We can determine the nonequilibrium steady states, described by the…