QUROPE Quantum Information Processing and Communication in Europe

We propose a method to prepare and verify spatial quantum superpositions of a nanometer-sized object separated by distances of the order of its size. This method provides unprecedented bounds for objective collapse models of the wave function by merging techniques and insights from cavity quantum optomechanics and matter-wave interferometry. An analysis and simulation of the experiment is performed taking into account standard sources of decoherence. We provide an operational parameter regime using present-day and planned technology.

Video clips on key scientific ideas explored within QIPC, and brought to you by projects funded by FP6 and FP7 programmes of European Commission.

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The paper provides new evidence that quantum computers cannot be efficiently simulated by classical computers. In particular, the authors consider a model of computation in which identical photons are generated, sent through a linear-optical network, then nonadaptively measured to count the number in each mode. While this model is not known or believed to be universal for quantum computation, it is shown that the model is able to solve sampling problems and search problems that are classically intractable under plausible assumptions.

In the distrustful quantum cryptography model the parties have conflicting interests and do not trust one another. Nevertheless, they trust the quantum devices in their labs. The aim of the device-independent approach to cryptography is to do away with the latter assumption, and, consequently, significantly increase security. It is an open question whether the scope of this approach also extends to protocols in the distrustful cryptography model, thereby rendering them “fully” distrustful.

The heat generated by computations is not only an obstacle to circuit miniaturization but also a fundamental aspect of the relationship between information theory and thermodynamics. In principle, reversible operations may be performed at no energy cost; given that irreversible computations can always be decomposed into reversible operations followed by the erasure of data, the problem of calculating their energy cost is reduced to the study of erasure. Landauer’s principle states that the erasure of data stored in a system has an inherent work cost and therefore dissipates heat.

The consultation was initiated by Horizon 2020 - the Framework Programme for Research and Innovation. The QUIE2T position paper is available from here.

Read the full story at http://physicsworld.com/cws/article/news/45960

QUIE2T was represented with an exhibit at the Commission’s fet11 conference taking place from 4 to 6 of May in Budapest. As part of the activities the attached project flyer that served as a press release was distributed at the conference.

QUIE2T was represented at the Commission’s fet11 conference taking place from 4 to 6 of May in Budapest. An exhibit proposal that was submitted in response to a European Commissions call has been successfully evaluated and was among the 28 exhibition stands present at the conference. According to the commission, “fet11 is a unique conference on visionary, high-risk and long-term research in information science and technology.