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  • News
    QuantumGain
    26.03.2024
    " QuantumGain - An Austrian deep tech, hidden champion for superconducting quantum computer hardware" is led by Philip Schmidt , a postdoctoral researcher in the research group of Markus Aspelmeyer at IQOQI Vienna, and will start in April. It is the only funded project from the last call that takes place at a non-university research institution, the Austrian Academy of Sciences. “Quantum computers, with their quantumbits, can be envisioned as a big orchestra. The quantumbits ...
  • News
    Gegen Fehler geschützte Quantenbits verschränkt
    10.12.2020
    Auch Computer können sich verrechnen. Schon kleine Störungen verändern gespeicherte Informationen und verfälschen das Rechenergebnis. Deshalb nutzen Rechenmaschinen Verfahren, um solche Fehler laufend zu korrigieren. Bei Quantencomputern lässt sich die Fehleranfälligkeit reduzieren, indem Quanteninformation nicht in einem einzelnen Quantenteilchen gespeichert, sondern in eine größere Anzahl von Quantenobjekten kodiert wird. Diese logischen Quantenbits sind unempfindlicher ...
  • Event
    From Quantum in Pictures to practical Natural Language Processing, Music, and understandable AI.
    04.04.2023
    language, and much of the high-level reasoning that goes on in our brain can be shaped according to those pictures. One consequence of this is that natural language really wants to live on a quantum computer, which is something that we meanwhile realised [3], and we have also made music with quantum computers [4]. All our software developed for doing so, lambeq and Quanthoven respectively, is freely available from GitHub, open-source, and well-documented and well-supported. ...
  • News
    Invitation to a talk by Jan-Ake Larsson on Wednesday, December 6th 2017, 15:00h
    06.12.2017
    A long-standing aim of quantum information research is to understand what gives quantum computers their advantage. Such an understanding would be of great benefit when attempting to build a quantum computer. Here we present a framework that uses classical resources but still is able to efficiently run, for example Deutsch-Jozsa and Simon's algorithms, and also can run Shor's factoring algorithm with some systematic errors. We also perform an experiment factoring 15 using ...
  • News
    Publication in Science: Quantum physics enables perfectly secure cloud computing
    23.01.2012
    Quantum computers are expected to play an important role in future information processing since they can outperform classical computers at many tasks. Considering the challenges inherent in building quantum devices, it is conceivable that future quantum computing capabilities will exist only in a few specialized facilities around the world – much like today’s supercomputers. Users would then interact with those specialized facilities in order to outsource their quantum ...
  • News
    Invitation to a talk: Gavin Brennen, Wednesday Feb. 21th 2018, 3:00 pm at the IQOQI Seminar Room
    21.02.2018
    market capitalization of several hundred billion US dollars, and while they are extremely volatile, some number of them are likely here to stay. With the development of quantum technology it is natural to ask how secure is Bitcoin to future quantum computer attacks. I'll introduce the basics of a Bitcoin transaction and describe the threat of quantum attacks on Proof of Work based mining and to digital signatures, as well as how to defend against them. Joint work with Divesh ...
  • News
    Gravitational SL(2, ℝ) algebra on the light cone
    05.08.2021
    symmetries of the boundary fields are manifest. We identify the gauge generators and second-class constraints that remove the auxiliary variables. All gauge generators are at most quadratic in the fundamental SL(2 , ℝ) variables on phase space. We compute the Dirac bracket and identify the Dirac observables on the light cone. Finally, we discuss various truncations to quantise the system in an effective way.
  • News
    Gravitational SL(2, ℝ) algebra on the light cone
    03.08.2021
    symmetries of the boundary fields are manifest. We identify the gauge generators and second-class constraints that remove the auxiliary variables. All gauge generators are at most quadratic in the fundamental SL(2 , ℝ) variables on phase space. We compute the Dirac bracket and identify the Dirac observables on the light cone. Finally, we discuss various truncations to quantise the system in an effective way.
  • News
    MICIUS PRIZE PRESENTED TO BLATT, ZEILINGER AND ZOLLER
    19.09.2019
    prizes were presented in the Chinese city of Hefei as part of the International Conference on Emerging Quantum Technology. Rainer Blatt received a Micius Prize for his pioneering experiments on quantum computers, and Peter Zoller, together with Juan Ignacio Cirac, for theoretical work on quantum computers. Anton Zeilinger and his former graduate student Jian-Wei Pan were recognized for their groundbreaking experiments on secure quantum communication over long distances. Five ...
  • News
    Quantum revolution takes a leap forward
    24.01.2020
    qubit . The processing of qubits relies on a few fundamental operations called quantum gates. For some systems, the implementation of such operations is already well established. Quantum technology has taken major strides recently, with a quantum computer achieving quantum supremacy and for the first time, surpassing the performance of conventional devices, and with the arrival of satellite-based quantum cryptography. Quantum information can also be encoded in larger digits ...