Project description
New qubit holds promise for high-fidelity quantum operations
Recent experiments have demonstrated quantum supremacy – a long-awaited milestone in quantum computing because it proves that quantum computers can outperform their classical counterparts. The major challenge remaining is to implement operations with sufficient accuracy to arrive at reliable outcomes. The EU-funded ConceptQ project plans to develop a new type of superconducting qubit that will more accurately carry out quantum operations. The new qubit will have a surprisingly simple structure consisting only of standard materials and a single Josephson junction. What’s more, it will be designed to have reduced sensitivity to noise and to strongly deviate from harmonic oscillator behaviour. The researchers will also develop electronics that can operate at temperatures near absolute zero – in the millikelvin range.
Objective
Quantum technology is an exciting field where new scientific discoveries have great potential to be used in practical applications such as in quantum computing. Although quantum supremacy has been recently demonstrated in fully superconducting qubits, there is a major challenge in promoting these many-qubit processors feasible for technological applications and advanced science experiments: fidelity of all qubit operations well above 99.9% in a power-efficient control and readout architecture is required.
This project ConceptQ aims to demonstrate a new superconducting-qubit concept that has a surprisingly simple structure consisting only of standard materials and a single Josephson junction while providing insensitivity to charge and flux noise, and most importantly large anharmonicity. We combine these properties with a new multimode enhancement idea to demonstrate record-breaking fidelities in quantum-logic gates, in initialization, and in readout. Importantly, we introduce cryogenic active components to implement all these three basic operations at millikelvin temperatures thus paving the way for a power-efficient integrated quantum-classical control system. Finally, we use the best new methods and designs for multi-qubit processors and demonstrate a new quantum algorithm at high fidelity.
With these breakthroughs, we aim to supersede the transmon as the standard high-fidelity superconducting qubit, thus boosting quantum-technology research and methodology not only in computing but also in sensing and simulation. This potentially opens horizons for novel scientific discoveries in classical cryoelectronics, quantum calorimetry, open quantum systems, and quantum thermodynamics. ConceptQ is a science project, but thanks to on-going collaborations with the quantum industry, it holds great potential for advancement of global wellbeing, e.g. through envisioned long-term applications in cyber security, quantum chemistry, and artificial intelligence.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
This project's classification has been validated by the project's team.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
This project's classification has been validated by the project's team.
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering computer hardware quantum computers
- natural sciences computer and information sciences computer security
- natural sciences physical sciences electromagnetism and electronics superconductivity
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
- circuit quantum electrodynamics
- cQED
- superconducting circuit
- superconducting qubit
- superconducting electronics
- cryogenic microwave source
- superconducting-qubit readout
- superconducting-qubit initialization
- superconducting resonator
- transmon qubit
- fluxonium qubit
- Josephson junction
- superconducting quantum computer
- bolometer
- ultrasensitive microwave bolometer
- open quantum system
- engineered quantum environment
- millikelvin electronics
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
-
HORIZON.1.1 - European Research Council (ERC)
MAIN PROGRAMME
See all projects funded under this programme
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-ERC - HORIZON ERC Grants
See all projects funded under this funding scheme
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2021-ADG
See all projects funded under this callHost institution
Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
02150 Espoo
Finland
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.