The Prehistory of Entanglement: Schrödinger and the Development of the Einstein-Podolsky-Rosen Paradox
In “The Present Situation in Quantum Mechanics,” his 1935 response to the famous paper by Einstein, Podolsky, and Rosen, Erwin Schrödinger coined the word “entanglement” (Verschränkung) to describe the impossibility of decomposing quantum mechanical…
Suppressing Noise due to Dissipation in a Variational Quantum Eigensolver
The variational quantum eigensolver (VQE) is a hybrid quantum-classical algorithm for the preparation of ground states of a given problem Hamiltonian. It exploits parameterized quantum circuits (PQCs) to prepare the ansatz solutions which are…
From Quantum Foundations to Quantum Gravity as Gravitized Quantum Theory
In this talk I will present the new understanding of quantum foundations based on the concept of quantum (modular) spacetime endowed with manifest non-locality that is consistent with causality.
About the possibility of gravitational emission from the recombination of a delocalized mass
A well-known thought experiment is revisited in which a delocalized particle is quickly recombined while another particle probes its gravitational field. Assuming the gravitational field is quantum, some tension between causality and complementarity…
The limits of enhancing communication rates with entanglement
Entanglement has long been recognized as a powerful resource for improving communication rates between a sender and receiver over a noisy quantum channel. But to what extent can entanglement enhance the communication rates that are achievable for a…
Towards a measurement theory in QFT: "Impossible" quantum measurements are possible but not ideal
Naive attempts to put together relativity and quantum measurements lead to signaling between space-like separated regions. In QFT, these are known as impossible measurements.
Onsager Theory with Non-Commuting Charges and applications to Thermosqueezing Effects
Open quantum systems bearing transport with non-commuting conserved quantities (charges) offer the possibility to study the interplay between quantum and thermal effects. A general theory for such non-abelian transport is, however, unavailable.
The influence functional in relativistic quantum information: field-theoretic particle detector models and the connection between subsystem and event locality
The Feynman-Vernon influence functional (also known as the decoherence functional, or the Schwinger-Keldysh path integral) is a tool that appears in many forms across different areas of theoretical physics, ranging from non-equilibrium quantum field…
New insights into causal inference from the point of view of a quantum physicist
The area of causal inference formalizes long-held human intuitions about cause and effect that were previously absent from scientific…
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