Sebastian Krinner (EHTZ 2018)
Quantum Computer
Quantum computers hold the promise of solving computational problems that are intractable using conventional methods. For fault-tolerant operation, quantum computers must correct errors unavoidably occurring due to noise and the mere nature of quantum laws.
Similar to classical error correction, quantum error correction employs redundancy, encoding a single bit of quantum information (qubit) into many physical qubits. Such a composite qubit object is called a logical qubit and is supposed to be the building block of future quantum computers. The goal of Sebastian Krinner’s project is to build logical qubits using superconducting circuits, one of the most promising quantum computing architectures. Less than three years into the project, Sebastian and his team have succeeded in bringing up their first surface code logical qubit, see S. Krinner et al., Nature 605, 669 (2022) for the corresponding publication.