QuSurf

Programme: IARPA, LogiQ program, IARPA-BAA-15-10

Project coordinator: TU Delft
Partner Institutions: Zurich Instruments, Netherlands Organisation for Applied Scientific Research, ETH Zurich

Large-scale quantum computation hinges on the ability to preserve and process quantum information with higher fidelity by increasing redundancy in a quantum error correction (QEC) code. Achieving such quantum fault tolerance in an extensible architecture remains an outstanding challenge for all experimental quantum computing platforms. Our QuSurf team targets the realization of an error-corrected quantum bit degree of freedom, a logical qubit, with a superconducting circuit implementation of surface coding. We choose this QEC scheme for its high fault-tolerance error threshold and modest interconnectivity requirements [1], making it very promising for the eventual demonstration of quantum fault tolerance.

[1] A. G. Fowler, M. Mariantoni, J. M. Martinis, and A. N. Cleland, Surface codes: Towards practical large-scale quantum computation, Physical Review A 86, 032324 (2012).

yes

IARPA, LogiQ program, IARPA-BAA-15-10

Large-scale quantum computation hinges on the ability to preserve and process quantum information with higher fidelity by increasing redundancy in a quantum error correction (QEC) code. Achieving such quantum fault tolerance in an extensible architecture remains an outstanding challenge for all experimental quantum computing platforms.

Entanglement stabilization using ancilla-based parity detection and real-time feedback in superconducting circuits

The long-term success of quantum computers relies on the ability to perform fault-tolerant quantum computations using quantum error correction. In this approach, errors are detected through the repeated measurement of multi-qubit parity operators and corrected using feedback operations conditioned on the measurement outcomes. In the work [Andersen et.al., npj Quantum Info 5, 69 (2019)], we demonstrate, for the first time with superconducting qubits, all major ingredients for performing quantum error correction implemented simultaneously with the same setup.

Ants

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Description

Ants Remm joined the Quantum Device Lab during the Spring Semester 2017 for a Master-thesis project within the ETH Zurich Master program (MSc ETH Physics). He was  in our group for a semester project as part of his Master education. He has previously worked as a research assistant. In autumn 2018 he is continuing his activity as a PhD student in our group.

Position
PhD Students
Phone
+41 44 63 37192
Office
HPF D7
E-mail
ants.remm@phys.ethz.ch
Project
QuSurf
Last Name
Remm
Type
Member

Christian

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Description

Christian Andersen joined the group as a PostDoc in October 2016. During his postdoc, Christian focused on designing and operating superconducting qubit devices for quantum error correction. Christian obtained his PhD at Aarhus University, Denmark, where he studied the theory and design of quantum devices with superconducting circuits. After leaving our group he started as an Assistant Professor at TU Delft where his lab develop novel superconducting qubits.

Position
Postdocs
Academic Title
Prof. Dr.
Project
QuSurf
NCCR QSIT, Subproject Hybrid quantum systems using microwave frequency on-chip resonators as a coupling bus
Last Name
Andersen
Type
Alumnus

Christopher

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Description

Christopher Eichler is a Senior Scientist in the Department of Physics at ETH. After obtaining Diploma degrees in Physics and Music, he completed a PhD thesis in the Quantum device lab in 2013 for which he was awarded an ETH Medal. In 2014 he moved on to Princeton University where he was a Dicke postdoctoral fellow until rejoining the Quantum device lab in summer 2016.

Position
Senior Scientist
Academic Title
Dr.
Phone
+41 44 63 37124
Office
HPF D2
E-mail
christopher.eichler@phys.ethz.ch
Project
Quantum Photonics with Microwaves in Superconducting Circuits
Quromorphic
OpenSuperQ
QuSurf
NCCR QSIT, Subproject Hybrid quantum systems using microwave frequency on-chip resonators as a coupling bus
Last Name
Eichler
Type
Member

Andreas

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Description

Since January 2012 Andreas Wallraff is a Full Professor for Solid State Physics in the Department of Physics at ETH Zurich. He joined the department in January 2006 as a Tenure Track Assistant Professor and was promoted to Associate Professor in January 2010. Previously, he has obtained degrees in physics from Imperial College of Science and Technology, London, U.K., Rheinisch Westfälische Technische Hochschule (RWTH) Aachen, Germany and did research towards his Masters degree at the Research Center Jülich, Germany.

Position
Principal Investigator
Academic Title
Prof. Dr.
Phone
+41 44 63 37563
Office
HPF D8/9
E-mail
andreas.wallraff@phys.ethz.ch
Web
qudev.phys.ethz.ch
Project
Quantum Photonics with Microwaves in Superconducting Circuits
Quromorphic
OpenSuperQ
Elements for Quantum Information Processing with Semiconductor/Superconductor Hybrids (EQUIPS)
QuSurf
Rydberg Quantum Simulators (RYSQ)
NCCR QSIT, Subproject Hybrid quantum systems using microwave frequency on-chip resonators as a coupling bus
Exploring Geometric Effects and Geometric Gates with Superconducting Circuits
Superconducting Quantum Networks (SuperQuNet)
Ultrafast Instrument for Quantum Control and Measurement
Scalable Superconducting Processors for Entangled Quantum Information Technology (ScaleQIT)
Circuit and Cavity Quantum Electrodynamics (CCQED)
Hybrid Cavity Quantum Electrodynamics with Atoms and Circuits (HYBRIDQED)
Solid State Systems for Quantum Information Processing (SOLID)
Atomic Quantum Technologies (AQUTE)
Geometric phases, pumping, and dissipation in quantum devices (GEOMDISS)
Cavity Quantum Electrodynamics and Quantum Information Processing with Superconducting Circuits
Last Name
Wallraff
Type
Member
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