Investigation of the collapse of quantum states using entangled photons

Moreno, M. G. M.; Parisio, Fernando

doi:10.1103/physreva.88.012118

Cited by 6 publications

(4 citation statements)

References 37 publications

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“…We stress that the formalism described from this point on is intended to be valid only in the temporal window where the collapse can potentially occur, that is, after the arrival time mentioned in the introduction has elapsed. A similar interpretation appears in a distinct, more specific context, in studies on physical collapse dynamics [14,15]. Note, in particular, that for Â = T , we have…”

Section: Space-time Symmetry and The Role Of Time In Quantum Mechanicssupporting

confidence: 72%

“…Besides, it is important to make a careful analysis of these concepts in comparison to previous studies related to time operators [3][4][5][6][7][8][9][10]. We believe that further developments in the presented model and its experimental investigation may help us to get a better understanding of the mechanism of quantum collapse [14,15] and of the role of time in quantum theory. Comments and suggestions on these preliminary ideas are very welcome.…”

Section: Perspectives and Conclusionmentioning

confidence: 94%

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Elements of a new approach to time in Quantum Mechanics

Dias,

Parisio

2015

Preprint

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In this work we present a re-evaluation of the concept of time in non-relativistic quantum theory. We suggest a formalism in which time is changed into the status of an operator, and where expectation values of observables and the state of a quantum system are reworked. This approach leads us to an additional concept, given by a temporal probability distribution associated with the actual measurement of an observable.

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Section: Space-time Symmetry and The Role Of Time In Quantum Mechanicssupporting

confidence: 72%

Section: Perspectives and Conclusionmentioning

confidence: 94%

Elements of a new approach to time in Quantum Mechanics

Dias,

Parisio

2015

Preprint

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“…We also note that under a different set of assumptions, an EPR-type experimental search for a finite-time collapse was recently proposed in Ref. [35].…”

Section: F the Einstein-podolsky-rosen Set-up And No-go Theoremsmentioning

confidence: 98%

Approach for modelling quantum-mechanical collapse

Ignatiev

2016

Preprint

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A long-standing quantum-mechanical puzzle is whether the collapse of the wave function is a real physical process or simply an epiphenomenon. This puzzle lies at the heart of the measurement problem. One way to choose between the alternatives is to assume that one or the other is correct and attempt to draw physical, observable consequences which then could be empirically verified or ruled out.As a working hypothesis, we propose simple models of collapse as a real physical process for direct binary symmetric measurements made on one particle. This allows one to construct irreversible unstable Schrödinger equations capable of describing continuously the process of collapse induced by the interaction of the quantum system with the measuring device. Due to unknown initial conditions the collapse outcome remains unpredictable so no contradictions with quantum mechanics arise.Our theoretical framework predicts a finite time-scale of the collapse and links with experiment.Sensitive probes of the collapse dynamics could be done using Bose-Einstein condensates, ultracold neutrons or ultrafast optics. If confirmed, the formulation could be relevant to the transition from quantum fluctuations to classical inhomogeneities in early cosmology and to establishing the ultimate limits on the speed of quantum computation and information processing.

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“…The mean time of the collapse may bring a deep insight on the dynamics that rules it. This problem, which has already been considered and experimental tests to verify the duration of the collapse have been proposed [14][15][16], will be the central issue of this work.…”

Section: Introductionmentioning

confidence: 99%

Finite-time collapse process and non-local correlations are incompatible with non-signaling theories

Moreno,

Fonseca,

Cunha

2018

Preprint

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We propose a hidden variable analysis of collapse dynamics in which the state's reduction process may take a finite time δt. A full characterization of the model is given for the case of black boxes. By introducing nonlocal perfect correlations to a two black-boxes scenario, it is shown that in order to avoid faster than light communication, the reduction time associated to the system must be strictly null. Furthermore we prove that the result above holds even when there is a time window between the choice of both part's inputs. Our results represent a new evidence of the instantaneous nature of the wave function collapse process which could have implications in foundations of quantum mechanics and information science.

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Investigation of the collapse of quantum states using entangled photons

Cited by 6 publications

References 37 publications

Elements of a new approach to time in Quantum Mechanics

Elements of a new approach to time in Quantum Mechanics

Approach for modelling quantum-mechanical collapse

Finite-time collapse process and non-local correlations are incompatible with non-signaling theories

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