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AG Quantum Optics
and Spectroscopy

Christian Roos receives ERC Advanced Grant

Details
Published: 27 March 2017

The development of quantum information processing has been progressing at a fast pace. Three decades ago it started with just a few ideas – today it has developed into a research field with a wide variety of topics. For example, in the laboratory experimental physicists developed the building blocks for creating a future quantum computer. Rainer Blatt’s group is one of the worldwide leaders in this field. However, a lot of work still needs to be done to build a universal quantum computer. Until then researchers will be using the unique properties of the quantum world for solving specific problems. Quantum systems, for example, are particularly suitable for stimulation and study of the properties of other quantum systems. Scientists have already been carrying out simulations successfully in experiments. However, the number of available quantum bits is still small so that problems can also be simulated with a conventional computer. In Innsbruck, physicist Christian Roos wants to develop a new type of quantum simulator to respond to this challenge.

Entering a new dimension

So far the researchers in Innsbruck have used linear ion traps where the particles are assembled like on a string. “With this design we can control up to 20 ions really well,” says Roos. “The more particles we need, the more difficult the experiment becomes.” To overcome this problem, the physicists want to develop a cryogenic device to trap two-dimensional ion crystals. Roos‘ goal is to control up to 100 ions at the same time. “This device will enable us to enter a dimension where numerical simulations would be too elaborate to be carried out with conventional computers,” explains the physicist. In addition, with a two-dimensional system it will be possible to study physical phenomena that, so far, have been impossible to investigate with quantum simulation. Roos’ research team will use the funds from the ERC Advanced Grant to implement this new concept in the laboratory. The next step is to use it for specific simulations. “Our goal is to carry out simulations that are not feasible with the conventional method of numerical simulation,” says Roos. In Innsbruck, the researchers are provided with the best working conditions as teams of international theoretical and experimental physicists collaborate at the highest level.

Source: https://iqoqi.at/en/current/news/556-quantum-physicist-roos-receives-erc-advanced-grant

 

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