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Quantum Technologies Collaboration

  • Projects
    • Many-body localisation and hole-burning in random quantum magnets
    • From topology in condensed matter to quantum information and spintronics
    • Topological Quantum States
    • Electronic structure of novel heterostructure systems for quantum electronics
    • Molecular Nanoscience
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    • Quantum telecommunication and sensing with Spins in Silicon Carbide
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SwissFEL small.jpg

Quantum Technologies Collaboration at PSI (QTC@PSI)

A nucleation point of PSI competences towards the quantum technology initiative.

PSI's expertise in the study of quantum matter and engineering of nanoelectronics is directly connected to the availability of world-class large-scale facilities, such as the SINQ neutron and SµS muon source, the SLS synchrotron and the SwissFEL x-ray free-electron laser.

The Quantum Technology Collaboration at PSI (QTC@PSI) serves as a platform to coalesce key competences and know-how (imaging, spectroscopy, sample synthesis, nanofabrication and theory) that will lead to the development of components required to implement quantum technology in everyday life. Critical expertise in nanofabrication, optical amplifiers & microwave technology, metrology, cryogenics & magnet engineering, as well as detector technology exist at PSI today. This combination of scientific excellence in materials science and quantum materials along with the technological know-how and large scale facilities means PSI is uniquely positioned to make significant contributions to the quantum revolution that now is unfolding worldwide.

Latest News

30 November 2020
Magnetic beauty within

Magnetic vortices come full circle

The first experimental observation of three-dimensional magnetic ‘vortex rings’ provides fundamental insight into intricate nanoscale structures inside bulk magnets, and offers fresh perspectives for magnetic devices.

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16 October 2020
axes_no_ticks

Harnessing components from the optical internet for programmable spectroscopy

A novel concept for extracting information from spectra where traditional post-processing procedures fail, dubbed ‘software-defined spectroscopy’, offers a fresh approach to high-resolution terahertz spectroscopy. The new method implements an ‘optical comb’ and combines it with a programmable modulator, all using components from the optical internet.

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24 August 2020
Cat Qubit 2

Scientists develop a new kind of qubit based on the concept of Schrödinger’s cat

Scientists in the Applied Physics department of Yale University – one of the leading authors, Alexander Grimm, has in the meantime relocated to PSI – have developed a new device that combines the Schrödinger’s cat concept of superposition (a physical system existing in two states at once) with the ability to fix some of the trickiest errors in a quantum computation.

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27 July 2020
Integrated Circuits

The tiniest secrets of integrated circuits revealed

New research has demonstrated that the secrets of the tiniest active structures in integrated circuits can be revealed using a non-destructive imaging technique. The breakthrough required the efforts of an international team of scientists from JKU and Keysight Technologies (Austria), ETH/EPFL/PSI and IBM Research - Europe (Switzerland) and from UCL (UK).

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23 March 2020
Octupole teaser

Spin ice expands to higher orders

With experimental work demonstrating that the correlated ground state of the pyrochlore system Ce2Sn2O7 is a quantum liquid of magnetic octupoles, an international team led by PSI researcher Romain Sibille establishes a fundamentally new state of matter: higher-rank multipole ice.

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11 March 2020
Teaser Nanowelten in 3-D

Nanoworlds in 3-D

Matter and Material Materials Research Research Using Synchrotron Light

Tomographic images from the interior of fossils, brain cells, or computer chips are yielding new insights into the finest of structures. These 3-D images are made possible by the X-ray beams of the Swiss Light Source SLS, together with detectors and sophisticated computer algorithms developed at PSI.

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24 February 2020
antiferromagnet_eucd2as2_t.jpg

Emergence of Nontrivial Low-Energy Dirac Fermions in Antiferromagnet EuCd2As2

When magnetism meets topology, colorful novel states can emerge in condensed matter. It is widely believed that parity-time symmetry plays an essential role for the formation of Dirac states in Dirac semimetals. So far, all of the experimentally identified topological nontrivial Dirac semimetals possess both parity and time reversal symmetry. Since the magnetism will break time-reversal symmetry, only in special cases the Dirac states can be protected in a magnetic system. Thus, the realization of magnetic topological Dirac materials remains a major issue in the research of topological physics. In this work, the authors ascertained that the ground state of EuCd2As2 is a good candidate for magnetic topological Dirac semimetal when the spins point in the out-of-plane direction in the A-type antiferromagnetic phase. The Dirac state is protected by the combination of parity-time symmetry with additional translation operation. Moreover, when the spins deviate from out-of-plane direction, the bulk Dirac cone will open a gap, and the system develops into a novel state containing axion insulator, antiferromagnetic topological crystalline insulator, and higher order topological insulator.

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31 January 2020
MuSR teaser

A link between quantum magnetism and electronic band topology

Muon spin rotation experiments establish a quantitative link between the magnetic and topological electronic properties of the kagome magnet Co3Sn2S2 — and demonstrate effective ways for tuning these properties.

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2 December 2019
Superconducting muon spin depolarization rate for NbSe2

The multi-layered physics of layered superconductors

Muon spin rotation experiments provide unique microscopic insight into the superconductivity and magnetism of transition metal dichalcogenides — and reveal complex and unconventional patterns, hinting towards a common mechanism for and electronic origin of ‘unconventional’ superconductivity.

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QTC@PSI
Forschungsstr. 111
CH-5232 Villigen PSI
Switzerland

QTC Board:
Simon Gerber
Alexander Grimm
Guy Matmon
Markus Müller
Valerio Scagnoli

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