The goal of the „MicroLinQs“ project is to develop a method to connectquantum computers error-free over distances of up to 30 meters using microwaves. In the future, quantum computers will require significantly more computing power to complete complex tasks. To achieve this, individual quantum processors need to be interconnected in a way that ensures that the extremely sensitive quantum information is not destroyed during transmission. With funding from SNSF, the „MicroLinQs“ project will utilize superconducting circuits—the building blocks of many modern quantum computers—to securely transmit information using microwave photons. The team will develop specialized error detection and correction techniques that operate directly in the communication channel to avoid loss of quantum information during transmission.
Superconducting qubits are one of the most mature and well-funded technologies for quantum computers. In these systems, the wiring is a vital and costly part, and key for qubit control and readout. Wiring is also a major bottleneck that limits scale-up of the number of superconducting qubits. In this Innosuisse-funded project, carried out together with the Superconducting Quantum Circuits Group from PSI and in collaboration with Huber+Suhner AG, we aim to overcome this obstacle by optimizing wiring hardware and metrics. The goal of this project is to reduce the size of the wiring components and mitigate their adverse effects on the fidelity of operations acting on qubits at large scale.
Quantum technology revolutionizes computing, communication, and sensing, yet researchers face system engineering challenges. In this Innosuisse-funded project we improve our versatile TWPA technology, at the foundation of our joint ETH/EPFL start-up project QanovaTech, to advance quantum technologies. More information.
The NCCR SPIN aims to make a major contribution to research into and the development of quantum computers and create the basis for a new information-processing technology. The NCCR’s objective is to develop small, fast, scalable silicon-based qubits. It will also generate important findings on software and algorithm development, error correction and the architecture of future quantum computers.
Superconducting circuits are a leading technology for the realisation of practical quantum computers. However, scaling-up towards full-scale, fault-tolerant quantum computers will involve addressing many challenges concerning, e.g., qubit coherence, reproducibility, stability, cross-talk, control, and readout. To achieve this, a new generation of metrological methods and tools is needed. The MetSuperQ project, funded by SERI and the European Union, will develop such a suite of tools for superconducting qubits and apply them to one- and two-qubit circuits.
Quantum computers promise to solve challenging computational problems more efficiently than conventional computers. Quantum algorithms demonstrating small instances of challenging computations, such as factorization, solving quantum chemistry problems, finding solutions to optimization problems, or quantum simulations, have been realized using noisy intermediate scale quantum (NISQ) hardware. However, it has become evident that fault-tolerant quantum computation will be required for addressing problems on relevant scales of complexity and for building universal quantum computers.
The Quantum Device Lab at ETH Zurich and the Superconducting Quantum Circuits Group at the ETHZ-PSI Quantum Computing Hub, in collaboration with Zurich Instruments, will develop an integrated software/hardware system, enabling scalable quantum computing experiments with real-time feedback for large-scale quantum error correction and new applications such as initial state preparation and verification of quantum algorithms.
The Quantum Device Lab aims at expanding the size and performance of its quantum information processing hardware in a modular approach. Starting with small modules, the team will demonstrate inter-module and intra-module operation. Instrumentation and software to characterize efficiently and operate a modular quantum computer will be developed. The lab will integrate such modules, containing up to several tens of qubits, in a 3D architecture using flip-chip technology with bump bonds.
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.
In this project we will develop building blocks of a fully deterministic quantum photonics framework in the microwave frequency domain. By exploiting the unique properties of superconducting circuits, we focus on the realization of (i) deterministic photon-photon entangling gates , (ii) sources of cluster states, and (iii) quantum memories to absorb, store and relieve photons with a controllable time delay.
