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Long-range interacting quantum systems and devices
|Organization name:UNIVERSITAET STUTTGART|
Region:BADEN-WÜRTTEMBERG STUTTGART Stuttgart, Stadtkreis
Objective: Controlled correlations in a quantum network are at the heart of emerging quantum technologies for communication, information processing and computation. The scaling to a large number of interconnected nodes has so far remained an open challenge. Here meso-scopic ensembles of atoms which can be well controlled in their geometry and which provide rapidly switchable long range interactions promise an alternative approach with a significant simplification for quantum devices and networks. Finite temperatures up to even above room temperature operation of the resulting quantum devices might be possible and the up-scaling to quantum networks with millions of nodes seems within reach.
Therefore I propose to study Rydberg interacting meso-scopic ensembles at low and high temperatures.
In the first part fundamental building blocks for quantum devices and networks based on the so called Rydberg blockade in meso-scopic ensembles will be studied in an ultra-cold environment.
In the second part I will investigate how to transfer these ideas to scalable ensembles in thermal micro-vapor cells.
As the range of interaction can be on the order of micrometers, standard techniques in lithography can be used to produce meso-scopic ensembles confined in glass cells. Display fabrication technologies used for the production of TFT LC (thin-film transistor liquid crystal) displays can be used to scale the number of connected meso-scopic ensembles up dramatically. I will investigate to what extend the interdisciplinary combination of micro- and display technology and atomic physics enables the parallel operation of many scalable single photon sources for example to feed a large linear optical quantum network. This resulting ground-breaking perspective for the applicability of quantum devices and networks justifies the risk to explore fundamentally and technologically unexplored territory.
Project cost:2407200 EURO
Project Funding:2407200 EURO
Programme Acronym: FP7-IDEAS-ERC
Programme type:Seventh Framework Programme
Subprogramme Area:ERC Advanced Grant - Fundamental constituents of matter
Contract type:ERC Advanced Grant
Subject index:Scientific Research
Record control number:98082