QUROPE Quantum Information Processing and Communication in Europe

MULTI replaces the familiar sequential model of computation that uses Boolean variables and combinational gates by logic operations that are executed in parallel on devices that have a built-in many state memory and whose inputs and outputs are multivalued. MULTI seeks to design, simulate and experimentally implement proof of principle devices on the atomic and molecular scale.

- Bose-Einstein condensation of photons

- quantum simulation with cold atoms and photons

- cold atoms in optical lattices

- laser cooling of dense gases

Development of superconducting nanoscale electronics

Superconducting nanowire single photon detectors

Superconducting nanowire three-terminal devices

Superconducting nanowire memories

Design, fabrication and characterization of micro and nano superconducting quantum devices including Josephson junctions, rf and dc SQUIDs.

The High Level Steering Committee (http://qurope.eu/db/news/expert-group-quantum-technology-flagship) initiated a consultation process in order to collect the community consensus about the possible structure and governance of the QT Flagship.

During the first HLSC meeting, on the 20th September, T. Calarco presented the following documents:

Topological quantum systems and materials

1. Physical properties of topological phases, characterization of topological phases and topological phase transitions

2. Geometric topology and topological phases in shape deformed nanostructures (semiconductors and superconductors)

3. Topological phases in superconductor-semiconductor nanostructures

4. Manipulating topological states in hybrids based on chiral and helical topological superconductors

5. Adiabatic quantum computation in the presence of a phonon decoherence bath

We use light to fabricate and characterize integrated quantum photonic components. In particular, we use femtosecond laser pulses to produce photonic circuits in transparent materials, as glasses and crystals, for quantum applications. Recent work focussed on the development of photonic circuits in glass for the manipulation of single photons, in crystal for the demonstration of quantum memories and in diamond for a photonic interface with color-center defects. We use ultrafast laser pulses for the characterization of single photon sources based on 2D materials.

- Rare earth ions and cromophores doped glasses and glass ceramics

- Confined structures: waveguides; opals; 1D-microcavities; WGMs spherical microresonators

- Optical spectroscopy

- Fabrication by sol-gel  route

- Fabrication by RF-Sputtering

Superconducting quantum hybrids and conversion of 'unconventional' into quantum devices

• Josephson junctions, quantum interferomters and superconducting circuits employing various superconductors Al, NbN, Nb, YBCO
• Hybrid Josephson junctions with ferromagnetic, semiconducting, graphene and topological insulator barriers 
• Macroscopic quantum effects in hybrids and unconventional Josepshon junctions 
• Low-power qubit readout and control circuits