289 citations · 1.5k across the 32 of their papers we have counts for
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Mutual Information Across Quantum Reference Frame Perspectives
Leonardo Valente, Carla Ferradini, Flaminia Giacomini +1
In quantum information theory, standard notions typically presuppose a fixed partition of the world into subsystems, encoded in a tensor product structure of the Hilbert space. Yet…
Reduced Quantum-Reference-Frame Channels for Open Quantum Systems
Paolo Luppi, Viktoria Kabel, Flaminia Giacomini +1
When reference frames are treated quantum mechanically, the subsystem structure of quantum systems is no longer absolute, but depends on the choice of the quantum reference frame (…
Local Operations and Field Mediated Entanglement without a Local Tensor Product Structure
Alberto Spalvieri, Sébastien Christophe Garmier, Flaminia Giacomini
Quantum information has become a powerful tool for probing the structure of quantum field theories, yet its application to gauge theories remains subtle. On the one hand, quantum i…
Quantum Galilei group as quantum reference frame transformations
Angel Ballesteros, Diego Fernandez-Silvestre, Flaminia Giacomini +1
Quantum groups have been widely explored as a tool to encode possible nontrivial generalisations of reference frame transformations, relevant in quantum gravity. In quantum informa…
Quantum effects in gravity beyond the Newton potential from a delocalised quantum source
Lin-Qing Chen, Flaminia Giacomini
Recent progress in table-top experiments offers the opportunity to show for the first time that gravity is not compatible with a classical description. In all current experimental…
Relational superposition measurements with a material quantum ruler
Hui Wang, Flaminia Giacomini, Franco Nori +1
In physics, it is crucial to identify operational measurement procedures to give physical meaning to abstract quantities. There has been significant effort to define time operation…
Any consistent coupling between classical gravity and quantum matter is fundamentally irreversible
Thomas D. Galley, Flaminia Giacomini, John H. Selby
When gravity is sourced by a quantum system, there is tension between its role as the mediator of a fundamental interaction, which is expected to acquire nonclassical features, and…
Inference of gravitational field superposition from quantum measurements
Chris Overstreet, Joseph Curti, Minjeong Kim +3
Experiments are beginning to probe the interaction of quantum particles with gravitational fields beyond the uniform-field regime. In non-relativistic quantum mechanics, the gravit…
Gravitational time dilation as a resource in quantum sensing
Carlo Cepollaro, Flaminia Giacomini, Matteo G. A. Paris
Atomic clock interferometers are a valuable tool to test the interface between quantum theory and gravity, in particular via the measurement of gravitational time dilation in the q…
Second-quantized Unruh-DeWitt detectors and their quantum reference frame transformations
Flaminia Giacomini, Achim Kempf
We generalize the Unruh-DeWitt detector model to second quantization. We illustrate this model by applying it to an excited particle in a superposition of relativistic velocities.…
Quantum generalisation of Einstein's Equivalence Principle can be verified with entangled clocks as quantum reference frames
Carlo Cepollaro, Flaminia Giacomini
The Einstein Equivalence Principle (EEP) is of crucial importance to test the foundations of general relativity. When the particles involved in the test exhibit quantum properties,…
Quantum superposition of spacetimes obeys Einstein's Equivalence Principle
Flaminia Giacomini, Časlav Brukner
We challenge the view that there is a basic conflict between the fundamental principles of Quantum Theory and General Relativity, and in particular the fact that a superposition of…
Spacetime Quantum Reference Frames and superpositions of proper times
Flaminia Giacomini
In general relativity, the description of spacetime relies on idealised rods and clocks, which identify a reference frame. In any concrete scenario, reference frames are associated…
The group structure of dynamical transformations between quantum reference frames
Angel Ballesteros, Flaminia Giacomini, Giulia Gubitosi
Recently, it was shown that when reference frames are associated to quantum systems, the transformation laws between such quantum reference frames need to be modified to take into…
Einstein's Equivalence principle for superpositions of gravitational fields and quantum reference frames
Flaminia Giacomini, Časlav Brukner
The Einstein Equivalence Principle (EEP), stating that all laws of physics take their special-relativistic form in any local inertial (classical) reference frame, lies at the core…
A no-go theorem on the nature of the gravitational field beyond quantum theory
Thomas D. Galley, Flaminia Giacomini, John H. Selby
Recently, table-top experiments involving massive quantum systems have been proposed to test the interface of quantum theory and gravity. In particular, the crucial point of the de…
Comment on "Revisiting dynamics of quantum causal structures --when can causal order evolve?''
Esteban Castro-Ruiz, Flaminia Giacomini, Časlav Brukner
In the last few years, there has been increasing interest in quantum processes with indefinite causal order. Process matrices are a convenient framework to study such processes. Re…
Relativistic Bell Test within Quantum Reference Frames
Lucas F. Streiter, Flaminia Giacomini, Časlav Brukner
A still widely debated question in the field of relativistic quantum information is whether entanglement and the degree of violation of Bell's inequalities for massive relativistic…
Generalized probability rules from a timeless formulation of Wigner's friend scenarios
Veronika Baumann, Flavio Del Santo, Alexander R. H. Smith +3
The quantum measurement problem can be regarded as the tension between the two alternative dynamics prescribed by quantum mechanics: the unitary evolution of the wave function and…
Quantum clocks and the temporal localisability of events in the presence of gravitating quantum systems
Esteban Castro-Ruiz, Flaminia Giacomini, Alessio Belenchia +1
The standard formulation of quantum theory relies on a fixed space-time metric determining the localisation and causal order of events. In general relativity, the metric is influen…
Information Content of the Gravitational Field of a Quantum Superposition
Alessio Belenchia, Robert M. Wald, Flaminia Giacomini +3
When a massive quantum body is put into a spatial superposition, it is of interest to consider the quantum aspects of the gravitational field sourced by the body. We argue that in…
Relativistic quantum reference frames: the operational meaning of spin
Flaminia Giacomini, Esteban Castro-Ruiz, Časlav Brukner
The spin is the prime example of a qubit. Encoding and decoding information in the spin qubit is operationally well defined through the Stern-Gerlach set-up in the non-relativistic…
Switching quantum reference frames in the N-body problem and the absence of global relational perspectives
Augustin Vanrietvelde, Philipp A. Hoehn, Flaminia Giacomini
Given the importance of quantum reference frames (QRFs) to both quantum and gravitational physics, it is pertinent to develop a systematic method for switching between the descript…
A change of perspective: switching quantum reference frames via a perspective-neutral framework
Augustin Vanrietvelde, Philipp A Hoehn, Flaminia Giacomini +1
Treating reference frames fundamentally as quantum systems is inevitable in quantum gravity and also in quantum foundations once considering laboratories as physical systems. Both…