757 citations · 1.4k across the 57 of their papers we have counts for
61 papers
Universal quantum theory from dynamical consistency
Chiara Marletto, Vlatko Vedral
We argue for the universality of quantum theory using a dynamical consistency argument, within a specific Hamiltonian setting. We analyse two different types of coupling between si…
Tests of constructor theory
Chiara Marletto, David Deutsch, Vlatko Vedral
Constructor theory is a proposal to extend quantum information theory beyond both quantum theory and computation, to cover more general machines than programmable computers -- call…
Repulsive Gravitational Force as a Witness of the Quantum Nature of Gravity
Pablo L. Saldanha, Chiara Marletto, Vlatko Vedral
We show that a single spatially superposed 'source' mass acting on a 'probe' matter wavepacket can reveal the quantum nature of the gravitational field. For this we use a specific…
Classical gravity cannot mediate entanglement
Chiara Marletto, Jonathan Oppenheim, Vlatko Vedral +1
In Nature, 646, 813 (2025), Aziz and Howl claim that classical (unquantised) gravity produces entanglement. We show that their model does not produce entanglement. Even if the mode…
Classical Gravity Cannot Mediate Entanglement by Local Means
Chiara Marletto, Vlatko Vedral
We rebut a recent paper that claims that classical gravity can entangle two massive superpositions by local means. We refute the misconceptions appearing in this paper and confirm…
A Spin-Based Pathway to Testing the Quantum Nature of Gravity
Sougato Bose, Anupam Mazumdar, Roger Penrose +52
A key open problem in physics is the correct way to combine gravity (described by general relativity) with everything else (described by quantum mechanics). This problem suggests t…
Can entanglement be mediated by a Koopmanian system?
Chiara Marletto, Vlatko Vedral
We present a method for coupling a Koopmanian classical system to two quantum bits to mediate an interaction between them. We then prove that the resulting dynamics can never lead…
Bose-Marletto-Vedral experiment without observable spacetime superpositions
Nicetu Tibau Vidal, Chiara Marletto, Vlatko Vedral +1
Reconciling quantum mechanics and general relativity remains one of the most profound challenges in modern physics. The BMV (Bose-Marletto-Vedral) experiment can assess the quantum…
Temporal Entanglement and Witnesses of Non-Classicality
Giuseppe Di Pietra, Gaurav Bhole, James Eaton +4
The universality of quantum theory has been questioned ever since it was proposed. Key to this long-unsolved question is to test whether a given physical system has non-classical f…
Interference in complex canonical variables is not quantum
Chiara Marletto, Vlatko Vedral
We formally represent the quantum interference of a single qubit embodied by a photon in the Mach-Zehnder interferometer using the classical Hamiltonian framework but with complex…
Constructor theory of time
David Deutsch, Chiara Marletto
Constructor theory asserts that the laws of physics are expressible as specifications of which transformations of physical systems can or cannot be brought about with unbounded acc…
Collapse-based models for gravity do not violate the entanglement-based witness of non-classicality
Tianfeng Feng, Vlatko Vedral, Chiara Marletto
It is known that an entanglement-based witness of non-classicality can be applied to testing quantum effects in gravity. Specifically, if a system can create entanglement between t…
Observation of quantum free fall and the consistency with the equivalence principle
Or Dobkowski, Barak Trok, Peter Skakunenko +9
The unification of quantum theory and the general theory of relativity - describing gravity, is one of the most important challenges in science. Einstein's general theory of relati…
On the Role of Locality in the Bose-Marletto-Vedral Effect
Giuseppe Di Pietra, Vlatko Vedral, Chiara Marletto
Two of us recently proposed an entanglement-based witness of non-classicality, which can be applied to testing quantum effects in gravity in what is known as the Bose-Marletto-Vedr…
The Bose-Marletto-Vedral experiment with nanodiamond interferometers: an insight on entanglement detection
Giuseppe Di Pietra, Fabrizio Piacentini, Ettore Bernardi +6
Recently, it has been proposed a new method [arXiv:2405.21029] to detect quantum gravity effects, based on generating gravitational entanglement between two nano-diamonds with Nitr…
Quantum-information methods for quantum gravity laboratory-based tests
Chiara Marletto, Vlatko Vedral
Quantum theory and general relativity are about one century old. At present, they are considered the best available explanations of physical reality, and they have been so far corr…
Role of non-classicality in mediated spatial quantum correlations
Salvatore Raia, Giuseppe Di Pietra, Chiara Marletto
The study of non-classicality is essential to understand the quantum-to-classical transition in physical systems. Recently, a witness of non-classicality has been proposed, linking…
Universal quantum theory contains twisted logic
Francesco Atzori, Enrico Rebufello, Maria Violaris +9
Quantum theory is notoriously counterintuitive, and yet remains entirely self-consistent when applied universally. Here we uncover a new manifestation of its unusual consequences.…
Conservation Laws and the Non-Classicality of Gravity
Tianfeng Feng, Chiara Marletto, Vlatko Vedral
We analyze the interaction between quantum matter and classical objects through a general effective channel for hybrid dynamics, subject to the fundamental constraint that no quant…
Comparing coherent and incoherent models for quantum homogenization
Anna Beever, Maria Violaris, Chiara Marletto +1
Here we investigate the role of quantum interference in the quantum homogenizer, whose convergence properties model a thermalization process. In the original quantum homogenizer pr…
Observing ghost entanglement beyond scattering amplitudes in quantum electrodynamics
Chiara Marletto, Vlatko Vedral
A fully local quantum account of the interactions experienced between charges requires us to use all the four modes of the electromagnetic vector potential, in the Lorenz gauge. Ho…
Temporal witnesses of non-classicality in a macroscopic biological system
Giuseppe Di Pietra, Vlatko Vedral, Chiara Marletto
Exciton transfer along a polymer is essential for many biological processes, for instance light harvesting in photosynthetic biosystems. Here we apply a new witness of non-classica…
Unpredictability is perfectly possible in a deterministic universe
Chiara Marletto, Vlatko Vedral
We revisit the vexed question of how unpredictability can arise in a deterministic universe, focusing on unitary quantum theory. We discuss why quantum unpredictability is irreleva…
Interference in quantum field theory: detecting ghosts with phases
Chiara Marletto, Vlatko Vedral
We discuss the implications of the principle of locality for interference in quantum field theory. As an example, we consider the interaction of two charges via a mediating quantum…