Ultrasensitive bolometers
We develop fast and sensitive thermal detectors for circuit quantum electrodynamics applications.
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 and innovations.
Unimon - A new qubit to boost quantum computers for useful applications
A group of scientists from Aalto University, IQM Quantum Computers, and VTT Technical Research Centre of Finland have discovered a new superconducting qubit, the unimon, to increase the accuracy of quantum computations.
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. We are also proud to have given birth to a leading European quantum-computer company IQM. Recently, we jointly developed with IQM an open-source software, KQCircuits, to design superconducting quantum processors, making our tools available for the entire quantum community (more information here).
We are looking for postdocs and PhD students for experiments on superconducting quantum electronic circuits
Requirements for postdocs:
Successful experience on measurements or fabrication of high-coherence superconducting resonators or qubits
Requirements for Ph.D students:
Outstanding performance in BSc and MSc studies on an applicable field (GPA 4.5/5.0 or greater)
If you fulfill the requirements, please apply by sending your CV, list of publications, and a short cover letter expressing your interests and greatest merits to Mikko ([email protected])
Research
Research highlight:
NATURE PUBLICATION: Bolometer operating at the threshold for circuit quantum electrodynamics,
Nature 586, 47–51 (2020).
SCIENCE PUBLICATION: Observation of isolated monopoles in a quantum field,
Science 348, 544 (2015).
Quantum gases
Bose-Einstein condensation (BEC) is a manifestation of macroscopic occupation of a single quantum state.
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).
Quantum theory
QCD's activities cover theoretical and computational problems in quantum information science as well as experimental realizations of quantum devices.
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.
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
QCD Labs - Cryostats and measurement equipment
Cryostats and measurement equipment used in QCD Labs.
Latest publications
More information on our research in the Research database.
QCD members in the group photo 2022 (from the left): Jian Ma, Wallace Santos Teixeira, Heidi Kivijärvi, Ron Nyström, Qiming Chen, Roberto Zamora-Zamora, Florian Blanchet, Tommi Malmelin, Sasu Tuohino, Mikko Möttönen, Algot Silvennoinen, Heikki Suominen, Arman Alizadeh, Timm Mörstedt, Arto Viitanen, Aarne Keränen, Andras Gunyho, Joonas Vuojamo, Vasilii Vadimov, Hermanni Rajamäki, Louis Lattier, Toni Annala, Miika Rasola
Sakari Niemelä, Daniel de Carvalho, Aashish Sah, Suman Kundu, Manuela Norrgrann, Maaria Tiiri, Priyank Singh, Giacomo Catto