WELCOME TO SUPERQULAN

Superconducting quantum circuits are one of the most promising platforms for realizing large-scale quantum computing devices, where in the near future a coherent integration of 100-1000 quantum bits (qubits) is feasible. However, the required temperatures of only a few mK currently restrict quantum operations to qubits that are located within a single, heavily shielded dilution refrigerator. This imposes a serious constraint on the realization of even larger quantum processors or the implementation of local- and wide-area quantum networks based on this technology.

The project SuperQuLAN is set out to address this important open problem and to demonstrate a first operational prototype quantum local area network (QuLAN) of separated superconducting quantum processors. This work will be carried out by a multi-national team of scientists and industry partners who will develop key network components and quantum communication protocols that will facilitate in the long term the realization of large quantum computing clusters or even city-wide quantum networks using superconducting circuits.

The project is funded by the Horizon 2020 research and innovation programme of the European Union.

NEWS

Workshop & Summer School

Workshop & Summer School After two years of travel restrictions we are happy to announce that both our workshop on superconducting quantum networks as well as our summer school can take place in person in Sep. 2022. Please check Events for further updates. ...

Long-distance qubit-qubit entanglement using Gaussian photonic beams

Long-distance qubit-qubit entanglement using Gaussian photonic beams TU Wien and IST have analyzed the distribution of entanglement over long distances by driving separated quantum nodes with the output of a two-mode squeezed parametric amplifier. This scheme is very robust with respect to various imperfections and is ideally suited for microwave-to-optics entanglement generation using the electro-optical ...

Deterministic quantum operations in microwave quantum links

Deterministic quantum operations in microwave quantum links The theory teams in Madrid and Vienna have proposed and analyzed a set of deterministic quantum operations for implementing gates between remote qubits in a cryogenic quantum link, similar to the device implemented at ETH Z├╝rich. Take a look at the preprint at: arXiv:2110.02092. ...

Photonic tensor network states in circuit QED

Photonic tensor network states in circuit QED Our partners at MPQ have described an efficient protocol to generate photonic tensor network states using superconducting quantum circuits. Read more details about this scheme in the preprint: arXiv:2109.06781. ...

Quantum interface between microwave and telecom light

Quantum interface between microwave and telecom light The group of Johannes Fink at IST Austria has demonstrated a pulse electro-optical transducer between microwave and telecom photons (arXiv:2107.08303). The impressively low amount of added noise (less than a single photon) is a big step forward toward our goal of realizing quantum-coherent interfaces between superconducting quantum processors ...