Department of Applied Physics

Quantum Computing and Devices (QCD)

The Quantum Computing and Devices (QCD) group was formally established in October 2007, and since 2012, the premises of our research group has been referred to as QCD Labs. We keep an open mind and explore the most interesting and promising pathways to reach maximal quality and productivity in our research.
Artistic depiction of a bright light in space / made by Ray Scipak

We have a major effort on experimental quantum physics with superconducting circuits, but we also carry out computational and theoretical work down to fundamental quantum mechanics. Currently, we focus on control and readout techniques for superconducting qubits and on the implementation of on-demand dissipation in quantum circuits to study the related dynamics of open quantum systems. We also develop ultrasensitive microwave detectors and on-chip components for controlling microwave photons, single-electron pumps based on silicon quantum dots, and quantum knots and monopoles in Bose-Einstein condensates.

Mikko Möttönen

Group leader

Dr. Mikko Möttönen

Mikko's Quantum Blog

Research

Research highlight: 

SCIENCE PUBLICATION: Observation of isolated monopoles in a quantum field,
Science 348, 544 (2015).

Artistic depiction of a bright light in space / made by Ray Scipak

Quantum gases

Bose-Einstein condensation (BEC) is a manifestation of macroscopic occupation of a single quantum state.

Department of Applied Physics
Quantum theory

Quantum theory

QCD's activities cover theoretical and computational problems in quantum information science as well as experimental realizations of quantum devices.

Department of Applied Physics
Silicon quantum electronics

Silicon quantum electronics

Our rigorous long term goal is to find a high-yield (100 pA) and metrologically accurate (10 ppb uncertainty) current source which could be used to redefine the unit of electric current, the ampere.

Department of Applied Physics
Superconducting quantum electronics

Superconducting quantum electronics

We develop components and methodology in the rapidly growing field of quantum computing, especially in the framework of circuit quantum electrodynamics (cQED).

Department of Applied Physics

QCD Media Room

Media hits and research videos by the QCD group

QCD Cinema

Research presentations and media interviews on the research by the QCD group

QCD Media

QCD research in the media

Facilities

The samples are fabricated in Micronova cleanroom facilities.

Computational studies are performed utilizing the resources of Aalto University and CSC.

Micro and nanofabrication facilities

OtaNano offers facilities to develop innovative enabling technologies and apply them to practical micro- and nano-systems

Services
Cryostats and measurement equipment in QCD Labs

QCD Labs - Cryostats and measurement equipment

Cryostats and measurement equipment used in QCD Labs.

Department of Applied Physics

Latest publications

Centre of Excellence in Quantum Technology, QTF, Department of Applied Physics, Quantum Computing and Devices

Josephson penetration depth in coplanar junctions based on 2D materials

Publishing year: 2019 Journal of Applied Physics
Centre of Excellence in Quantum Technology, QTF, Quantum Computing and Devices, Department of Applied Physics

Decay of a Quantum Knot

Publishing year: 2019 Physical Review Letters
Centre of Excellence in Quantum Technology, QTF, Quantum Computing and Devices, Department of Applied Physics

Controlled creation of a singular spinor vortex by circumventing the Dirac belt trick

Publishing year: 2019 Nature Communications
Centre of Excellence in Quantum Technology, QTF, Quantum Computing and Devices, Department of Applied Physics

Nanobolometer with ultralow noise equivalent power

Publishing year: 2019 Communications physics
Centre of Excellence in Quantum Technology, QTF, Department of Applied Physics, Quantum Computing and Devices

Reconstruction approach to quantum dynamics of bosonic systems

Publishing year: 2019 Physical Review A
Centre of Excellence in Quantum Technology, QTF, Department of Applied Physics, Quantum Computing and Devices

Exceptional points in tunable superconducting resonators

Publishing year: 2019 Physical Review B
Centre of Excellence in Quantum Technology, QTF, Quantum Computing and Devices, Department of Applied Physics, Multiscale Statistical and Quantum Physics

Reservoir engineering using quantum optimal control for qubit reset

Publishing year: 2019 New Journal of Physics
Centre of Excellence in Quantum Technology, QTF, Quantum Computing and Devices, Department of Applied Physics

Fast control of dissipation in a superconducting resonator

Publishing year: 2019 Applied Physics Letters
Centre of Excellence in Quantum Technology, QTF, Quantum Computing and Devices, Department of Applied Physics

Evidence for universality of tunable-barrier electron pumps

Publishing year: 2019 Metrologia
Multiscale Statistical and Quantum Physics, Centre of Excellence in Quantum Technology, QTF, Department of Applied Physics, Quantum Computing and Devices, PICO - Quantum Phenomena and Devices, KVANTTI – Superconducting Qubits and Circuit QED

Photon blockade and the quantum-to-classical transition in the driven-dissipative Josephson pendulum coupled to a resonator

Publishing year: 2019 Physical Review A
More information on our research in the Research database.
Research database
Photo of the QCD members in 2019

QCD members in 2019. From left to right: Chengyu Yan, Akseli Mäkinen, Eero Väisänen, Kaapo Seppänen, Roberto Zamora-Zamora, Mikko Möttönen, Eemil Visakorpi, Tuomas Lebedeff, Aarne Keränen, Vasilii Sevriuk, Heidi Kivijärvi, Máté Janei, Otto Solatie, Wei Liu, Tuomas Ollikainen, Jinli Zhang, Roope Kokkoniemi, Kassius Kohvakka, Joni Ikonen, Arto Viitanen, Johannes Heinsoo and Jean-Philippe Girard.

Research group members

Mikko Möttönen

Mikko Möttönen

Department of Applied Physics
Professor (Associate Professor)
Tuomas Ollikainen

Tuomas Ollikainen

Department of Applied Physics
Doctoral Candidate
Kuan Tan

Kuan Tan

Department of Applied Physics
Academy Research Fellow

Mate Jenei

Department of Applied Physics
Doctoral Candidate

Andras Gunyho

Department of Applied Physics
Research Assistant

Joni Ikonen

Department of Applied Physics
Doctoral Candidate

Roope Kokkoniemi

Department of Applied Physics
Doctoral Candidate

Akseli Mäkinen

Department of Applied Physics
Doctoral Candidate
Jan Goetz

Jan Goetz

Department of Applied Physics
Postdoctoral Researcher

Jinli Zhang

Department of Applied Physics
Visiting Doctoral Candidate

Arto Viitanen

Department of Applied Physics
Doctoral Candidate

Tianyi Li

Department of Applied Physics
Postdoctoral Researcher

Wei Liu

Department of Applied Physics
Postdoctoral Researcher

Jean-Philippe Girard

Department of Applied Physics
Postdoctoral Researcher

Johannes Heinsoo

Department of Applied Physics
Postdoctoral Researcher

Giacomo Catto

Department of Applied Physics
Doctoral Candidate

Roberto Zamora-Zamora

Department of Applied Physics
Postdoctoral Researcher

Valtteri Lahtinen

Department of Applied Physics
Postdoctoral Researcher

Timm Mörstedt

Department of Applied Physics
Doctoral Candidate

Matti Kalliokoski

Department of Applied Physics
Staff Scientist

Vasilii Vadimov

Department of Applied Physics
Postdoctoral Researcher
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