Quantum Photonics: Development and Applications

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A:Physics".

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 2653

Special Issue Editor


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Guest Editor
Dipartimento di Fisica, Sapienza Universita di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy
Interests: quantum entanglement; quantum simulations; quantum foundations; quantum communications; complex quantum systems; light sources for quantum applications; photonic systems; multiphase interferometry; hybrid entanglement; integrated devices; boson sampling; quantum memories/quantum repeaters; integrated photonics for photonic quantum computing; material progress for photonic structures; coherent detectors for quantum applications

Special Issue Information

Dear Colleagues,

In the 21st century, we are moving towards a true coming-of-age of technologies that use quantum mechanical phenomena, such as entanglement and quantum many-body effects with applications ranging from quantum communications to quantum imaging. The quantum mechanical properties of single photons have proven to be fundamental for the implementation of intrinsically secure cryptographic distribution systems and are the stepping stones for the development of new research paths ranging from fundamental studies to their applications. This Special Issue will be devoted to the development of quantum photonics and their applications. Topics include the study of quantum correlations and their applications by using photons such as causality tests, photonic protocols for quantum key distribution, hybrid entanglement, quantum walks, search for new physics with high-precision quantum optics experiments, etc.

Accordingly, this Special Issue seeks to showcase research papers, communications, and review articles that focus on the theoretical and experimental progress of quantum photonics and their applications in physics and technology.

We look forward to receiving your submissions!

Dr. Gonzalo Carvacho
Guest Editor

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 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 entanglement
  • quantum simulations
  • quantum foundations
  • quantum communications
  • complex quantum systems
  • light sources for quantum applications
  • photonic systems
  • multiphase interferometry
  • hybrid entanglement
  • integrated devices
  • boson sampling
  • quantum memories/quantum repeaters
  • integrated photonics for photonic quantum computing
  • material progress for photonic structures
  • coherent detectors for quantum applications

Published Papers (1 paper)

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Research

18 pages, 616 KiB  
Article
Optimal High-Dimensional Entanglement Concentration for Pure Bipartite Systems
by Lukas Palma Torres, Miguel Ángel Solís-Prosser, Omar Jiménez, Esteban S. Gómez and Aldo Delgado
Micromachines 2023, 14(6), 1207; https://doi.org/10.3390/mi14061207 - 7 Jun 2023
Viewed by 1387
Abstract
Considering pure quantum states, entanglement concentration is the procedure where, from N copies of a partially entangled state, a single state with higher entanglement can be obtained. Obtaining a maximally entangled state is possible for N=1. However, the associated success [...] Read more.
Considering pure quantum states, entanglement concentration is the procedure where, from N copies of a partially entangled state, a single state with higher entanglement can be obtained. Obtaining a maximally entangled state is possible for N=1. However, the associated success probability can be extremely low when increasing the system’s dimensionality. In this work, we study two methods to achieve a probabilistic entanglement concentration for bipartite quantum systems with a large dimensionality for N=1, regarding a reasonably good probability of success at the expense of having a non-maximal entanglement. Firstly, we define an efficiency function Q considering a tradeoff between the amount of entanglement (quantified by the I-Concurrence) of the final state after the concentration procedure and its success probability, which leads to solving a quadratic optimization problem. We found an analytical solution, ensuring that an optimal scheme for entanglement concentration can always be found in terms of Q. Finally, a second method was explored, which is based on fixing the success probability and searching for the maximum amount of entanglement attainable. Both ways resemble the Procrustean method applied to a subset of the most significant Schmidt coefficients but obtaining non-maximally entangled states. Full article
(This article belongs to the Special Issue Quantum Photonics: Development and Applications)
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