-
Mr Apostolos Giovanakis (ETH Zurich)25/05/2026, 15:20Poster
A central question in the study of quantum information theory in the presence of symmetries concerns which properties of a system can be inferred by observers without access to the laboratory frame. We show how using a quantum system as a reference frame allows one to evade symmetry constraints, focusing on systems that can serve as quantum clocks. However, realistic quantum clocks cannot...
Go to contribution page -
Ms Bruna Sahdo (IQOQI-Vienna)25/05/2026, 15:20Poster
The tensor product rule for composing subsystems is central to information-theoretic formulations of Quantum Theory. Adopting a relational view, we describe the adding and removing of subsystems in a quantum reference frame (QRF) for finite discrete translations following E. Castro-Ruiz, O. Oreshkov (2025). We show that textbook compositional rules only hold in a QRF perspective if the...
Go to contribution page -
Mr Elia Sciama Bandel (University of Bristol)25/05/2026, 15:20Poster
Quantum clocks, such as atomic clocks, are known to have advantages over classical ones. Autonomous quantum clocks are a relatively new addition to this realm. What makes them particularly interesting is the little external control they need. My research is focused on a minimal thermal clock model previously proposed. This consists of two qubits operating between macroscopic heat baths,...
Go to contribution page -
Ms María Rosa Preciado-Rivas (University of Waterloo)25/05/2026, 15:20Poster
Contextuality, a key resource for quantum advantage, describes systems in which the outcome of a measurement is not independent of other compatible measurements, in contrast to classical hidden-variable descriptions. We investigate the harvesting of contextuality from the vacuum of a quantum field using Unruh-DeWitt detectors. We show that localized interactions with the field can endow...
Go to contribution page -
Ms Nina Mazurewicz (University of Warsaw)25/05/2026, 15:20Poster
The nature of time and its genuine passage are central problems at the interface of physics and philosophy. Inspired by Nicolas Gisin’s argument that free will is essential for rational reasoning and therefore implies the reality of temporal passage, this study examines how the structure of time may be understood in universes admitting Closed Timelike Curves (CTCs), and what implications such...
Go to contribution page -
Dr Tom Rivlin (TU Wien)25/05/2026, 15:20Poster
The Wigner’s Friend thought experiment, where two observers disagree about experimental outcomes due to different models of measurements, has long been used to frame questions in quantum foundations. It has also recently seen a resurgence as a way to produce novel nonclassical effects such as the Local Friendliness Inequalities (LFIs). But few works have approached these topics using the...
Go to contribution page -
Mrs Marina Pisaturo (Universität Bremen)25/05/2026, 15:20Poster
The interplay between quantum theory and gravity is still an open problem. Here, we investigate the dynamics of gravitationally induced entanglement in a single photonic state delocalized in a three-arms interferometer, each hosting quantum memories, in Earth's gravitational field. The output statistics can be related to entanglement measures, enabling the study of the dynamics of correlations...
Go to contribution page -
Prof. Lorenzo Maccone (Università di Pavia, INFN Pavia)25/05/2026, 15:20Poster
We detail how the Dirac equation can be expressed in the fully covariant relativistic quantum mechanics framework of the Geometric Event based quantum mechanics (GEB).
Go to contribution page -
Mr Eleftherios Stamatelopoulos (University of Patras)25/05/2026, 15:20Poster
Understanding how quantum systems interact gravitationally remains an important open problem at the interface of quantum theory and general relativity. While a complete theory of quantum gravity is still lacking, valuable insight can be gained by studying quantum matter coupled to gravity in the weak field regime. In this work we investigate the gravitational interaction of quantum systems...
Go to contribution page -
Ms Magdalini Zonnios (Trinity College Dublin)25/05/2026, 15:20Poster
How much memory does a quantum device need to tell two multi-time processes apart? We study process discrimination in a realistic regime where the probing device is reusable, time-homogeneous, and limited to finite coherent memory. While the strategy norm captures the ultimate power of arbitrary adaptive testers, it generally presumes step-dependent control and unbounded quantum memory. We...
Go to contribution page -
Mr Nicolás Medina Sánchez (University of Vienna)25/05/2026, 15:20Poster
In generally covariant theories, physical configurations are defined modulo diffeomorphisms, and the induced equivalence relation is highly singular. In particular, recent results show that complete sets of observables need not be Borel-definable, and their existence may fail within standard measurable frameworks. This obstructs any direct parametrisation of spacetime geometry in terms of...
Go to contribution page -
Dr Michael Suleymanov (Bar-Ilan University)25/05/2026, 15:20Poster
Existing approaches to relativistic quantum reference frames typically begin by assuming Lorentz or Poincaré symmetry and then constructing quantum frame transformations compatible with that structure. Here we propose an alternative route based on a minimal physical postulate: the existence of a perspective-invariant maximal velocity. Working within a timeless, constraint-based formulation in...
Go to contribution page -
Ms Rashi Kaimal (University of Tübingen)25/05/2026, 15:20Poster
We are concerned with the justification of the statement, commonly (explicitly or implicitly) used in quantum scattering theory, that for a free non-relativistic quantum particle with initial wave function $\Psi_0(\mathbf{x})$, surrounded by detectors along a sphere of large radius $R$, the probability distribution of the detection time and place has asymptotic density (i.e., scattering cross...
Go to contribution page -
Mr Patryk Michalski (University of Warsaw)25/05/2026, 15:20Poster
The two-state vector formalism is a time-symmetrised approach to quantum theory. Although its predictions can be derived from the principles of standard quantum mechanics, recent developments in constructing a covariant quantum field theory of particles with negative squared mass suggest that it may constitute a preferred interpretation. In our work, we identify an overlooked aspect of the...
Go to contribution page -
Mr Paolo Luppi (University of Milan)25/05/2026, 15:20Poster
Understanding what makes a quantum process genuinely nonclassical in time is a central question in the foundations of quantum theory. We investigate this question in continuous-time quantum walks by comparing two operational notions of quantumness: a single-time measure based on the quantum–classical dynamical distance, and a multi-time quantifier based on violations of Kolmogorov consistency...
Go to contribution page -
Dr Rick Perche (Stockholm University)25/05/2026, 15:20Poster
Vacuum fluctuations in quantum field theory impose fundamental limitations on our ability to measure time in short scales. To investigate the impact of universal quantum field theory effects on observer-dependent time measurements, we introduce a clock model based on the vacuum decay probability of a finite-sized quantum system. Using this model, we study a microscopic twin paradox scenario...
Go to contribution page
Choose timezone
Your profile timezone: