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Quantum Environment Engineering for Steered Systems

Total Cost €


EC-Contrib. €






Project "QUESS" data sheet

The following table provides information about the project.


Organization address
address: OTAKAARI 1
city: ESPOO
postcode: 2150

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Finland [FI]
 Project website
 Total cost 1˙949˙570 €
 EC max contribution 1˙949˙570 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2015-CoG
 Funding Scheme ERC-COG
 Starting year 2017
 Duration (year-month-day) from 2017-01-01   to  2021-12-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    AALTO KORKEAKOULUSAATIO SR FI (ESPOO) coordinator 1˙949˙570.00


 Project objective

The superconducting quantum computer has very recently reached the theoretical thresholds for fault-tolerant universal quantum computing and a quantum annealer based on superconducting quantum bits, qubits, is already commercially available. However, several fundamental questions on the way to efficient large-scale quantum computing have to be answered: qubit initialization, extreme gate accuracy, and quantum-level power consumption.

This project, QUESS, aims for a breakthrough in the realization and control of dissipative environments for quantum devices. Based on novel concepts for normal-metal components integrated with superconducting quantum nanoelectronics, we experimentally realize in-situ-tunable low-temperature environments for superconducting qubits. These environments can be used to precisely reset qubits at will, thus providing an ideal initialization scheme for the quantum computer. The environment can also be well decoupled from the qubit to allow for coherent quantum computing. Utilizing this base technology, we find fundamental quantum-mechanical limitations to the accuracy and power consumption in quantum control, and realize optimal strategies to achieve these limits in practice. Finally, we build a concept of a universal quantum simulator for non-Markovian open quantum systems and experimentally realize its basic building blocks.

This proposal provides key missing ingredients in realizing efficient large-scale quantum computers ultimately leading to a quantum technological revolution, with envisioned practical applications in materials and drug design, energy harvesting, artificial intelligence, telecommunications, and internet of things. Furthermore, this project opens fruitful horizons for tunable environments in quantum technology beyond the superconducting quantum computer, for applications of quantum-limited control, for quantum annealing, and for simulators of non-Markovian open quantum systems.


year authors and title journal last update
List of publications.
2018 M. Partanen, K. Y. Tan, S. Masuda, J. Govenius, R. E. Lake, M. Jenei, L. Grönberg, J. Hassel, S. Simbierowicz, V. Vesterinen, J. Tuorila, T. Ala-Nissila, M. Möttönen
Flux-tunable heat sink for quantum electric circuits
published pages: , ISSN: 2045-2322, DOI: 10.1038/s41598-018-24449-1
Scientific Reports 8/1 2019-10-01
2017 Jani Tuorila, Matti Partanen, Tapio Ala-Nissila, Mikko Möttönen
Efficient protocol for qubit initialization with a tunable environment
published pages: , ISSN: 2056-6387, DOI: 10.1038/s41534-017-0027-1
npj Quantum Information 3/1 2019-10-01
2018 Wonjae Lee, Andrei H. Gheorghe, Konstantin Tiurev, Tuomas Ollikainen, Mikko Möttönen, David S. Hall
Synthetic electromagnetic knot in a three-dimensional skyrmion
published pages: eaao3820, ISSN: 2375-2548, DOI: 10.1126/sciadv.aao3820
Science Advances 4/3 2019-10-01
2017 Joni Ikonen, Juha Salmilehto, Mikko Möttönen
Energy-efficient quantum computing
published pages: , ISSN: 2056-6387, DOI: 10.1038/s41534-017-0015-5
npj Quantum Information 3/1 2019-10-01
2018 Konstantin Tiurev, Tuomas Ollikainen, Pekko Kuopanportti, Mikio Nakahara, David S Hall, Mikko Möttönen
Three-dimensional skyrmions in spin-2 Bose–Einstein condensates
published pages: 55011, ISSN: 1367-2630, DOI: 10.1088/1367-2630/aac2a8
New Journal of Physics 20/5 2019-10-01
2017 T. Ollikainen, K. Tiurev, A. Blinova, W. Lee, D. S. Hall, M. Möttönen
Experimental Realization of a Dirac Monopole through the Decay of an Isolated Monopole
published pages: , ISSN: 2160-3308, DOI: 10.1103/PhysRevX.7.021023
Physical Review X 7/2 2019-10-01
2017 Roope Kokkoniemi, Tuomas Ollikainen, Russell E. Lake, Sakari Saarenpää, Kuan Y. Tan, Janne I. Kokkala, Ceren B. Dağ, Joonas Govenius, Mikko Möttönen
Flux-tunable phase shifter for microwaves
published pages: , ISSN: 2045-2322, DOI: 10.1038/s41598-017-15190-2
Scientific Reports 7/1 2019-10-01
2017 T. Ollikainen, S. Masuda, M. Möttönen, M. Nakahara
Quantum knots in Bose-Einstein condensates created by counterdiabatic control
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.96.063609
Physical Review A 96/6 2019-10-01
2017 Kuan Yen Tan, Matti Partanen, Russell E. Lake, Joonas Govenius, Shumpei Masuda, Mikko Möttönen
Quantum-circuit refrigerator
published pages: 15189, ISSN: 2041-1723, DOI: 10.1038/ncomms15189
Nature Communications 8 2019-10-01
2018 Shumpei Masuda, Kuan Y. Tan, Matti Partanen, Russell E. Lake, Joonas Govenius, Matti Silveri, Hermann Grabert, Mikko Möttönen
Observation of microwave absorption and emission from incoherent electron tunneling through a normal-metal–insulator–superconductor junction
published pages: , ISSN: 2045-2322, DOI: 10.1038/s41598-018-21772-5
Scientific Reports 8/1 2019-10-01
2018 Jukka Räbinä, Pekko Kuopanportti, Markus I. Kivioja, Mikko Möttönen, Tuomo Rossi
Three-dimensional splitting dynamics of giant vortices in Bose-Einstein condensates
published pages: , ISSN: 2469-9926, DOI: 10.1103/PhysRevA.98.023624
Physical Review A 98/2 2019-10-01
2017 Matti Silveri, Hermann Grabert, Shumpei Masuda, Kuan Yen Tan, Mikko Möttönen
Theory of quantum-circuit refrigeration by photon-assisted electron tunneling
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.96.094524
Physical Review B 96/9 2019-10-01

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