Related papers: Relational Quantum Mechanics and Contextuality

Related papers

Quantum State Transfer in Interacting, Multiple-Excitation Systems [41.94295877935867]
Quantum state transfer (QST) describes the coherent passage of quantum information from one node to another. We describe Monte Carlo techniques which enable the discovery of a Hamiltonian that gives high-fidelity QST. The resulting Jaynes-Cummings-Hubbard and periodic Anderson models can, in principle, be engineered in appropriate hardware to give efficient QST.
arXiv Detail & Related papers (2024-05-10T23:46:35Z)
Relational Quantum Mechanics, Quantum Relativism, and the Iteration of Relativity [0.0]
The idea that the dynamical properties of quantum systems are invariably relative to other systems has recently regained currency. Are there absolute facts about the properties one system possesses relative to a specified reference, or is this again a relative matter, and so on? I conclude with some reflections on the current state of play in perspectivist versions of RQM and quantum relativism more generally.
arXiv Detail & Related papers (2024-03-06T21:48:41Z)
The Combination Problem for Relational Quantum Mechanics [0.0]
I consider various proposed solutions to the panpsychist problem, assessing the prospects for a similar solution in the context of RQM. I argue that overall the prospects for solving RQM's combination problem look better for RQM with cross-perspective links than for orthodox versions of RQM.
arXiv Detail & Related papers (2024-01-28T22:40:16Z)
Applications of flow models to the generation of correlated lattice QCD ensembles [69.18453821764075]
Machine-learned normalizing flows can be used in the context of lattice quantum field theory to generate statistically correlated ensembles of lattice gauge fields at different action parameters. This work demonstrates how these correlations can be exploited for variance reduction in the computation of observables.
arXiv Detail & Related papers (2024-01-19T18:33:52Z)
Relational Quantum Mechanics with Cross-Perspective Links Postulate: an Internally Inconsistent Scheme [0.0]
We discuss the status of relative facts in the context of the new amendment to RQM called cross-perspective links. We show that RQM with cross-perspective links axiom is an internally inconsistent hidden variable theory.
arXiv Detail & Related papers (2023-12-12T08:12:37Z)
Quantifying High-Order Interdependencies in Entangled Quantum States [43.70611649100949]
We introduce the Q-information: an information-theoretic measure capable of distinguishing quantum states dominated by synergy or redundancy. We show that quantum systems need at least four variables to exhibit high-order properties. Overall, the Q-information sheds light on novel aspects of the internal organisation of quantum systems and their time evolution.
arXiv Detail & Related papers (2023-10-05T17:00:13Z)
Logic meets Wigner's Friend (and their Friends) [49.1574468325115]
We take a fresh look at Wigner's Friend thought-experiment and some of its more recent variants and extensions. We discuss various solutions proposed in the literature, focusing on a few questions.
arXiv Detail & Related papers (2023-07-04T13:31:56Z)
Randomness in Relational Quantum Mechanics [0.0]
relational interpretation of quantum mechanics (RQM) introduced in its present form by Carlo Rovelli in 1996. RQM assumes that all objects in the universe are quantum objects, regardless of their material complexity. concept of randomness associated with quantum state variables in RQM differs from that in other QM interpretations.
arXiv Detail & Related papers (2022-05-17T14:27:27Z)
Quantum state inference from coarse-grained descriptions: analysis and an application to quantum thermodynamics [101.18253437732933]
We compare the Maximum Entropy Principle method, with the recently proposed Average Assignment Map method. Despite the fact that the assigned descriptions respect the measured constraints, the descriptions differ in scenarios that go beyond the traditional system-environment structure.
arXiv Detail & Related papers (2022-05-16T19:42:24Z)
Fact-nets: towards a mathematical framework for relational quantum mechanics [0.0]
The relational interpretation of quantum mechanics (RQM) has received a growing interest since its first formulation in 1996. This paper proposes a radical reformulation of the mathematical framework of quantum mechanics which is relational from the start: fact-nets.
arXiv Detail & Related papers (2022-04-01T10:27:38Z)
Incompatible measurements in quantum information science [0.0]
Joint measurability and incompatibility are reviewed from the perspective of quantum information science. An overview on applications of incompatibility, such as in measurement uncertainty relations. Emerging directions of research, such as a resource theory of incompatibility, as well as other concepts to grasp the nature of measurements in quantum mechanics are discussed.
arXiv Detail & Related papers (2021-12-13T16:48:28Z)
The Relational Interpretation of Quantum Physics [0.0]
RQM's technical core is the realisation that quantum transition amplitudes determine physical probabilities only when their arguments are facts relative to the same system. RQM's technical core is the realisation that quantum transition amplitudes determine physical probabilities only when their arguments are facts relative to the same system.
arXiv Detail & Related papers (2021-09-19T17:22:25Z)
From geometry to coherent dissipative dynamics in quantum mechanics [68.8204255655161]
We work out the case of finite-level systems, for which it is shown by means of the corresponding contact master equation. We describe quantum decays in a 2-level system as coherent and continuous processes.
arXiv Detail & Related papers (2021-07-29T18:27:38Z)
Qubits are not observers -- a no-go theorem [0.0]
The relational approach to quantum states asserts that the physical description of quantum systems is always relative to something or someone. We show, in the form of a no-go theorem, that in RQM the physical description of a system relative to an observer cannot represent knowledge about the observer.
arXiv Detail & Related papers (2021-07-07T22:48:16Z)
A quintet of quandaries: five no-go theorems for Relational Quantum Mechanics [0.0]
RQM strives to uphold the completeness and universality of quantum theory. Here we present five nogos that imply it cannot; something has to give way.
arXiv Detail & Related papers (2021-07-01T18:00:15Z)
Quantum indistinguishability through exchangeable desirable gambles [69.62715388742298]
Two particles are identical if all their intrinsic properties, such as spin and charge, are the same. Quantum mechanics is seen as a normative and algorithmic theory guiding an agent to assess her subjective beliefs represented as (coherent) sets of gambles. We show how sets of exchangeable observables (gambles) may be updated after a measurement and discuss the issue of defining entanglement for indistinguishable particle systems.
arXiv Detail & Related papers (2021-05-10T13:11:59Z)
Equivalence of approaches to relational quantum dynamics in relativistic settings [68.8204255655161]
We show that the trinity' of relational quantum dynamics holds in relativistic settings per frequency superselection sector. We ascribe the time according to the clock subsystem to a POVM which is covariant with respect to its (quadratic) Hamiltonian.
arXiv Detail & Related papers (2020-07-01T16:12:24Z)
Entropic Uncertainty Relations and the Quantum-to-Classical transition [77.34726150561087]
We aim to shed some light on the quantum-to-classical transition as seen through the analysis of uncertainty relations. We employ entropic uncertainty relations to show that it is only by the inclusion of imprecision in our model of macroscopic measurements that we can prepare a system with two simultaneously well-defined quantities.
arXiv Detail & Related papers (2020-03-04T14:01:17Z)

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