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Applied Sciences
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Quantum Optics for Fundamental Quantum Mechanics II
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Quantum Optics for Fundamental Quantum Mechanics II

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 5157

Special Issue Editors

Prof. Dr. Marco Genovese

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Guest Editor
INRIM, Strada delle Cacce 91, 10135 Torino, Italy
Interests: experimental quantum; imaging metrology & sensing; quantum information processing; foundation in quantum mechanics
Special Issues, Collections and Topics in MDPI journals
Dr. Marco Gramegna

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Guest Editor
INRiM – Istituto Nazionale di Ricerca Metrologica, 10135 Torino TO, Italy
Interests: quantum optics; quantum metrology; metrology for quantum technologies; quantum information
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The purpose of this Special Issue is to attract publications that report theoretical and/or experimental works on the use of quantum optical systems for investigating the fundamental properties of physics and, in particular, of quantum mechanics. Topics include the study of quantum correlations and their application (quantum-enhanced measurements, etc.), the specific quantum properties of optical fields (as squeezing, entanglement, etc. ), quantum thought experiments, emergent properties from entanglement, quantum causality, Planck scale physics and quantum mechanics, the simulation of physical phenomena (such as black holes, closed time-like curves, etc.) with quantum optical systems, the search for Planck scale effects (or other “new physics”) with quantum optical set-ups, quantum mechanics in space, and new fields of research prompted by quantum optical methods. 

Prof. Dr. Marco Genovese
Dr. Marco Gramegna
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Quantum correlations
  • Entanglement
  • Tests of the foundations of quantum mechanics
  • Simulation of physical systems
  • Quantum gravity phenomenology
  • Search for new physics with high-precision quantum optics experiments

Published Papers (2 papers)

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Research

10 pages, 1009 KiB  
Article
Knowledge of Quantum Hidden Variables Enables Backwards-In-Time Signaling
by Avishy Carmi, Eliahu Cohen, Lorenzo Maccone and Hrvoje Nikolić
Appl. Sci. 2021, 11(10), 4477; https://doi.org/10.3390/app11104477 - 14 May 2021
Cited by 3 | Viewed by 2053
Abstract
Bell’s theorem implies that any completion of quantum mechanics which uses hidden variables (that is, preexisting values of all observables) must be nonlocal in the Einstein sense. This customarily indicates that knowledge of the hidden variables would permit superluminal communication. Such superluminal signaling, [...] Read more.
Bell’s theorem implies that any completion of quantum mechanics which uses hidden variables (that is, preexisting values of all observables) must be nonlocal in the Einstein sense. This customarily indicates that knowledge of the hidden variables would permit superluminal communication. Such superluminal signaling, akin to the existence of a preferred reference frame, is to be expected. However, here we provide a protocol that allows an observer with knowledge of the hidden variables to communicate with her own causal past, without superluminal signaling. That is, such knowledge would contradict causality, irrespectively of the validity of relativity theory. Among the ways we propose for bypassing the paradox there is the possibility of hidden variables that change their values even when the state does not, and that means that signaling backwards in time is prohibited in Bohmian mechanics. Full article
(This article belongs to the Special Issue Quantum Optics for Fundamental Quantum Mechanics II)
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15 pages, 11592 KiB  
Article
Protective Measurement—A New Quantum Measurement Paradigm: Detailed Description of the First Realization
by Enrico Rebufello, Fabrizio Piacentini, Alessio Avella, Rudi Lussana, Federica Villa, Alberto Tosi, Marco Gramegna, Giorgio Brida, Eliahu Cohen, Lev Vaidman, Ivo Pietro Degiovanni and Marco Genovese
Appl. Sci. 2021, 11(9), 4260; https://doi.org/10.3390/app11094260 - 08 May 2021
Cited by 2 | Viewed by 2619
Abstract
We present a detailed description of the experiment realizing for the first time a protective measurement, a novel measurement protocol which combines weak interactions with a “protection mechanism” preserving the measured state coherence during the whole measurement process. Furthermore, protective measurement allows finding [...] Read more.
We present a detailed description of the experiment realizing for the first time a protective measurement, a novel measurement protocol which combines weak interactions with a “protection mechanism” preserving the measured state coherence during the whole measurement process. Furthermore, protective measurement allows finding the expectation value of an observable, i.e., an inherently statistical quantity, by measuring a single particle, without the need for any statistics. This peculiar property, in sharp contrast to the framework of traditional (projective) quantum measurement, might constitute a groundbreaking advance for several quantum technology related fields. Full article
(This article belongs to the Special Issue Quantum Optics for Fundamental Quantum Mechanics II)
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