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7 papers · 2 filters
Heisenberg-scaling measurement of the single-photon Kerr non-linearity using mixed states
Geng Chen, Nati Aharon, Yong-Nan Sun +7
Improving the precision of measurements is a significant scientific challenge. The challenge is twofold: first, overcoming noise that limits the precision given a fixed amount of a…
Some remarks on 'superradiant' phase transitions in light-matter systems
Jonas Larson, Elinor K. Irish
In this paper we analyze properties of the phase transition that appears in a set of quantum optical models; Dicke, Tavis-Cummings, quantum Rabi, and finally the Jaynes-Cummings mo…
A single strontium Rydberg ion confined in a Paul trap
Gerard Higgins, Weibin Li, Fabian Pokorny +7
Trapped Rydberg ions are a promising new system for quantum information processing. They have the potential to join the precise quantum operations of trapped ions and the strong, l…
Higher dimensional communication complexity problems: classical protocols vs quantum ones based on Bell's Theorem or prepare-transmit-measure schemes
Armin Tavakoli, Marek Zukowski
Communication complexity problems (CCPs) are tasks in which separated parties attempt to compute a function whose inputs are distributed among the parties. Their communication is l…
The Number Behind the Simplest SIC-POVM
Ingemar Bengtsson
The simple concept of a SIC poses a very deep problem in algebraic number theory, as soon as the dimension of Hilbert space exceeds three. A detailed description of the simplest po…
A view on the open STIRAP problem
Thomas Mathisen, Jonas Larson
We consider the open STIRAP problem by formulating it in terms of generalized Bloch equations. Expressed in this form the resulting Liouvillian matrix is analyzed in detail. As it…