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Quantum Computer Lab

Objective

The world of atoms is governed by the rules of quantum mechanics. Over the past century, quantum-mechanical phenomena such as superposition and entanglement have been observed and studied with great precision. Today, we are entering a new era in which we can hope to explore quantum mechanics in larger objects. The science of quantum mechanics in more complex objects is barely known and as a result quantum mechanics is rarely explicitly used in technology. Theoretically, superposition and entanglement could be exploited as a new resource in a wide variety of future applications. We focus on information science and investigate the use of quantum mechanics in computing, i.e. a quantum computer (QC). If information is encoded in quantum superpositions and processed by exploiting entanglement, a QC can solve computational problems that are beyond the reach of conventional computers. Building a QC is, however, an enormous scientific challenge because the fragile quantum bits need to be protected from and corrected for even the smallest disturbances by the environment. Meeting this challenge requires a synergetic effort combining the best of quantum theory, electrical engineering, materials science, applied physics and computer science. This proposal aims to achieve a robust, exemplary QC. We propose a circuit containing processor qubits (two types: superconducting transmon qubits and spin qubits in silicon quantum dots), memory qubits (two types: topological qubits with nanowires and donor qubits), and a quantum databus (superconducting striplines). Our goal is to demonstrate a 13-qubit circuit that incorporates fault-tolerance through implementation of a surface code. We will demonstrate back-and-forth quantum state transfer between processor and memory qubits. Our team brings together the required expertise into a single “QC-lab” enabling us to bring our understanding of quantum mechanics to the next level and push QC to the tipping point from science to engineering.

Call for proposal

ERC-2012-SyG
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Lead Principal Investigator

Lieven Mark Koenraad Vandersypen (Prof.)

Host institution

TECHNISCHE UNIVERSITEIT DELFT
Address
Stevinweg 1
2628 CN Delft
Netherlands

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Activity type
Higher or Secondary Education Establishments
Principal investigator
Carlo Willem Joannes Beenakker (Prof.)
Administrative Contact
Jose Van Vugt (Ms.)
EU contribution
€ 13 330 000

Beneficiaries (2)

TECHNISCHE UNIVERSITEIT DELFT
Netherlands
EU contribution
€ 13 330 000
Address
Stevinweg 1
2628 CN Delft

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Activity type
Higher or Secondary Education Establishments
Principal investigator
Carlo Willem Joannes Beenakker (Prof.)
Administrative Contact
Jose Van Vugt (Ms.)
UNIVERSITEIT LEIDEN
Netherlands
EU contribution
€ 1 670 000
Address
Rapenburg 70
2311 EZ Leiden

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Activity type
Higher or Secondary Education Establishments
Administrative Contact
Ton Brouwer (Mr.)