QUROPE Quantum Information Processing and Communication in Europe

IThe SOLID group of Lieven Vandersypen recently published a paper in Physical Review Letters in which they investigated phonon-induced spin and charge relaxation mediated by spin-orbit and hyperfine interactions for a single electron confined within a double quantum dot. They extract an electron spin relaxation rate that varies nonmonotonically with the detuning between the dots and confirm this model with experiments performed on a GaAs double dot.

The Quantronics group at SOLID partner CEA have recently published a paper in Physical Review Letters in wihch they measure the quantum fluctuations of a pumped nonlinear resonator using a superconducting artificial atom as an in situ probe. The qubit excitation spectrum provided access to the frequency and amount of excitation of the intracavity field fluctuations, from which we infer its effective temperature.

The Chalmers team led by Chris Wilson recently published a paper in Physical Review Letters in which they investigated the effective interaction between two microwave fields, mediated by a transmon-type superconducting artificial atom that is strongly coupled to a coplanar transmission line. The interaction between the fields and atom produces an effective cross–Kerr coupling.

The Chalmers SOLID group recently published an article in Physical Review Letters in which they show, in the context of single-photon detection, that an atomic three-level model for a transmon in a transmission line does not support the predictions of the nonlinear polarizability model known as the cross-Kerr effect.

The Workshop on Quantum Telecommunications will be held on 15-17 May 2013, in Lisbon, and aims at disseminating the latest theoretical and experimental results in quantum telecommunications, quantum information and quantum cryptography, in an informal setting, with plenty of time for discussions. The number of participants is limited.

For more information and registration, please see:
http://www.qtworkshop.org/

We would like to advertise the 3rd international summer school on Quantum Key Distribution to be held July 29 to August 2, 2013 at the Institute for Quantum Computing at the University of Waterloo in Canada.

Please note that the school will be held one week before the QCrypt 2013, which is also hosted by Institute for Quantum Computing.

The purpose of this workshop is to bring together leading researchers in the fields of quantum information and quantum optics & materials science, and to educate and update the participating scientific community on the recent developments-both theoretical and experimental-in the fields of `Quantum computation and simulation', `Topological quantum codes', and `Integrated quantum systems'. The speakers will address, among others, the following questions:

The 15 Annual SQuInT Workshop will be hosted by the Center for Quantum Information and Control (CQuIC).

As its last last deliverable, QUIE2T WP2 has submitted the final updates of the QIPC Strategic Report (v. 1.8) and the Quantum Information Classification scheme QICS (v. 1.3). A detailed report on the update is available from the WP2 deliverables page (deliverable D2.2.2).

The main research focus of our group are foundations of quantum physics and its implications for the quantum information processsing. Our goal is to gain insight into these topics by exploiting operational approaches.