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  • News
    The Paul Ehrenfest Best Paper Award for Quantum Foundations
    02.12.2016
    Bell experiments, thereby corroborating quantum mechanics and ruling out theories that satisfy local causality. The public award ceremony takes place at the Faculty of Physics of the University of Vienna, in Christian Doppler lecture hall, on December 2nd, 2016 with beginning at 5pm. A representative author from each publication will present a public award lecture at this occasion. The selection procedure The members of the selection committee of the Paul Ehrenfest Best ...
  • Event
    Quantum Geometry of the Light Cone
    09.04.2024
    that the shear of the null boundary follows the profile of a step function. The angular dependence is arbitrary. Next, I explain how to solve the residual constraints, which are the Raychaudhuri equation and a Carrollian transport equation for an SL(2,R) holonomy. The resulting submanifold in phase space is symplectic. Along each null generator, we end up with a simple mechanical system. The quantization of this system is straightforward. The physical Hilbert space is the ...
  • Event
    From Quantum in Pictures to practical Natural Language Processing, Music, and understandable AI.
    04.04.2023
    towards a new form of natural language, one in which different languages all become the same. This in turns forms a new template for interpretable compositional AI. [1] Bob Coecke and Stefano Gogioso (December 2022) Quantum in Pictures. Quantinuum Pubs. [2] Bob Coecke and Aleks Kissinger (2017) Picturing Quantum Processes. Cambridge University Press. [3] ...
  • Event
    Composable security in relativistic quantum cryptography
    02.11.2021
    Minkowski space (or superpositions thereof). This allows us to analyse relativistic protocols and to derive novel possibility and impossibility results. We show that (1) coin flipping can be constructed from the cryptographic primitive, channel with delay, (2) composably secure bit commitment, biased coin flipping and channel with delay are all impossible without set-up assumptions, and (3) it is impossible to securely increase the delay time of a channel with delay. Our ...
  • News
    Invitation to a talk by Dennis Rätzel on Tuesday, January 30th 2018, 14:30h
    30.01.2018
    Quantum FieldTheory on curved spacetimes is presented. The framework ofgravitoelectrodynamics is introduced which is particularly useful toobtain intuition for effects beyond the Newtonian limit. Tuesday, January 30th, 2018 14:30 IQOQI Seminar Room, 2nd Floor, Boltzmanngasse 3, 1090 Vienna Hosted by: Philipp Höhn
  • News
    Invitation to a talk: Tomasz Paterek, Monday, July 16th 2018, 11 am at the IQOQI Seminar Room
    16.07.2018
    We will discuss recent proposals along this line and give more details for two harmonic oscillators coupled gravitationally. Finally, some thoughts on the limits of this approach will be presented. Monday, July 16, 2018 11:00 am IQOQI Seminar room, 2nd floor Boltzmanngasse 3, 1090 Vienna Hosted by: Časlav Brukner
  • Event
    Can a single nanomechanical mode generate a frequency comb?
    26.06.2024
    of a frequency comb arising solely from a single mode and a single, resonant drive tone [4]. References [1] Q. P. Unterreithmeier et al., Universal transduction scheme for nanomechanical systems based on dielectric forces, Nature 458, 1001 (2009) [2] T. Faust et al., Coherent control of a classical nanomechanical two-level system, Nature Physics 9, 485 (2013) [3] J. S. Huber et al., Spectral Evidence of Squeezing of a Weakly Damped Driven Nanomechanical Mode, Phys. Rev. X ...
  • News
    Schrödinger’s Letter to Edington: Reconciling Mach’s and Boltzmann’s Philosophy
    13.09.2021
    had significantly influenced Schrödinger’s intellectual formation and philosophical standpoint. Schrödinger adopted Mach’s epistemological view of science theories, according to which “sensations” are empirical building blocks of scientific knowledge [2]. At the same time, Schrödinger accepted Boltzmann’s methodological thesis that visualisation (German: Anschaulichkeit ) is a necessary criterion for understanding. However, he held that this Anschaulichkeit should not be ...
  • News
    Invitation to a talk by Pavel Kroupa on Wednesday, December 6th 2017, 16:00h
    06.12.2017
    Milgromian dynamics predicts a new physical phenomenon, the external field effect, and it is shown that astronomical data indeed bear evidence for this phenomenon, which is strictly non-Newtonian. Wednesday, December 6th, 2017 4:00 PM IQOQI Seminar Room, 2nd Floor, Boltzmanngasse 3, 1090 Vienna Hosted by: Anton Zeilinger
  • News
    Invitation to a talk: Iagoba Apellaniz, Friday April 27th 2018, 12:00 noon at the IQOQI Seminar Room
    27.04.2018
    web-based interface to connect with juliabox.com . Therefore, one needs to have an account either in Google, LinkedIn or GitHub. If that's not the case, feel free to ask for help before the lecture. Friday, April 27th, 2018 12:00 noon IQOQI Seminar room, 2nd floor Boltzmanngasse 3, 1090 Vienna Hosted by: Costantino Budroni