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Nano-optics and nanophotonics

Progresses in Experimental Studies on Dressed Photon

Motoichi Ohtsu, Hirofumi Sakuma

Published Jan 1, 2025• 0 citations
Publisher

Abstract

After reviewing the nature of off-shell field and creation/measurement processes of DP, nanometer-sized optical logic gate devices are demonstrated that triggered rapid development of off-shell science. Next, two technologies are reviewed that exhibit novel phenomena of Table 1.1 . One is the nanofabrication technology. Its essential by-product is the successful estimation of the maximum size of the DP. The other is silicon light-emitting devices. It is pointed out that a cluster of photons emitted from these devices behaves as if it is a single photon. Portions of Chap. 2 have been reproduced from Ref. [15] (an open access article published under a CC BY license (Creative Commons Attribution 4.0 International License)), from Ref. [47] with permission from Elsevier, and from Sakuma, H., Ojima, I. and Ohtsu, M., Perspective on an Emerging Frontier of Nanoscience Opened up by Dressed Photon Studies. Nanoarchitectonics, 1, 1–23 (2024) (an open access article distributed under a CC BY license (Creative Commons Attribution 4.0 International License)).

DOI
10.1007/978-3-031-77944-2_2

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After reviewing the nature of off-shell field and creation/measurement processes of DP, nanometer-sized optical logic gate devices are demonstrated that triggered rapid development of off-shell science. Next, two technologies are reviewed that exhibit novel phenomena of Table 1.1 . One is the nanofabrication technology. Its essential by-product is the successful estimation of the maximum size of the DP. The other is silicon light-emitting devices. It is pointed out that a cluster of photons emitted from these devices behaves as if it is a single photon. Portions of Chap. 2 have been reproduced from Ref. [15] (an open access article published under a CC BY license (Creative Commons Attribution 4.0 International License)), from Ref. [47] with permission from Elsevier, and from Sakuma, H., Ojima, I. and Ohtsu, M., Perspective on an Emerging Frontier of Nanoscience Opened up by Dressed Photon Studies. Nanoarchitectonics, 1, 1–23 (2024) (an open access article distributed under a CC BY license (Creative Commons Attribution 4.0 International License)).
The core parts of developing dressed photon (DP) research that require advanced knowledge of highly mathematical quantum field theory and their potentially important impacts on the wide spectrum of long-term scientific activities in general, not necessarily restricted to those in the natural science sector, are succinctly explained in this article. Although a considerable number of remarkable technological achievements in the field of nanophotonics have been attained by utilizing DP phenomena, from the theoretical viewpoint, they remain enigmatic, as in the case of dark matter and energy in cosmology. Under such circumstances, an intriguing working hypothesis (WH) for DPs is proposed by the authors of this article through a combination of Ojima’s micro-macro duality theory and the Greenberg-Robinson theorem, claiming that the space-like momentum contribution is an inevitable element for quantum field interactions to occur. Note that, as the Schrödinger’s cat thought experiment clearly shows, the widespread common quantum mechanics knowledge is incapable of explaining how the invisible quantum world is connected to our familiar visible classical world. In the above-mentioned WH, the main reason why we cannot explain either DPs or dark entities in cosmology is shown to have roots in the fact that the prevailing theories have not revealed an important role of spacelike momentum in connecting the quantum and classical worlds. Our new WH further shows that the entire universe is connected by an instantaneous spacelike entropic spin network, as in the case of quantum spin entanglement explained in mainstream physics. Since such a network may have a close relation with the nonlocal consciousness field, which seems to be the final frontier of physics, our perspective on such a possibility is briefly given in the final section of this paper.
Dear Reader, Since the launch of our journal Advanced Quantum Technologies (QUTE for short) in 2018, we have been witnessing plenty of very promising research initiatives and activities in the diverse fields of quantum science, quantum materials, and quantum technologies. Key questions like “Where is quantum technology taking us? What are challenges and perspectives?” led our Editorial Advisor Rainer Blatt to edit a special issue Advancing Quantum Technologies – Chances and Challenges that we published in November 2020 (https://onlinelibrary.wiley.com/toc/25119044/2020/3/11). It broadly showcases how to master quantum phenomena for communication, metrology, sensing, simulation, and computation purposes. In a related virtual mini-symposium Rainer Blatt invited the authors Christoph Becher, Dagmar Bruss, Klemens Hammerer, Dieter Meschede, Christian Ospelkaus, and Robert Raussendorf to share their visions of the quantum future, which culminated in a vivid discussion (https://www.workcast.com/register?cpak=6284277449925096). Yet another recent quantum science webinar targeting a large Chinese audience featured our authors Tongcang Li and Yongjian Han who gave talks on quantum simulation in optical systems and quantum spin optomechanics, respectively. Further activities are being planned for 2021 in order to stay in close contact with the quantum community even during the pandemic. Earlier in 2020 Mohamed Benyoucef, Anthony Bennett, Stephan Götzinger, and Chaoyang Lu threw the spotlight on Photonic Quantum Technologies by editing a special issue (https://onlinelibrary.wiley.com/toc/25119044/2020/3/2). The topics addressed include hybrid integration of single-photon emitters, cavity QED and light–matter interactions at the nanoscale, on-chip integration of entangled photon sources, and incorporating color centers into nanophotonic structures. Fabrication of suspended converters, single-photon emission at the telecom wavelength, molecule-based single-photon sources, quantum emitter–plasmonic cavity coupling, vertically coupled quantum dot systems, and optomechanical coupling are also discussed. We are happy to announce that our young and growing journal is being indexed in Web of Science. We are confident that the enhanced visibility of QUTE will trigger increasing submission numbers and a growing impact on the thriving field of quantum science and technology. Table 1 lists the presently most cited articles, exemplifying the broad spectrum of review-type and original research content contributed by authors from all over the world. Wiley has a number of agreements in place with institutions and funders to help authors publish open access and ensure compliance with open access policies. Your institution may be able to help with open access Article Publication Charges (APCs) that may be covered in full or part for affiliated authors publishing in Wiley fully open access journals or in a subscription journal through OnlineOpen. Find out if your institution or funder will cover your open access APCs and make your article open access: https://authorservices.wiley.com/author-resources/Journal-Authors/open-access/affiliation-policies-payments/institutional-funder-payments.html There are also several national deals where authors from an institution affiliated with an open access deal may publish primary research and review articles open access at no charge to the author. This applies to, e.g., Austria, Sweden, the Netherlands, Finland, Germany, Hungary, Norway, and the United Kingdom. For more information and to view eligibility criteria: https://authorservices.wiley.com/author-resources/Journal-Authors/open-access/affiliation-policies-payments/index.html Nonetheless, QUTE is a hybrid journal, i.e., also publishing subscription content following the Copyright Transfer Agreement, which is free of charge to authors who do not possess open access publication funds. To make the licensing process easier, a new tool was rolled out prompting all license signing (Copyright Transfer Agreements or Creative Commons licenses) to the Author Services Platform. Corresponding authors, especially those who are eligible for OnlineOpen, can choose the most suitable publication conditions for their articles in QUTE. We would like to sincerely thank our authors, reviewers, Advisory Board members, and readers, for entrusting our journal with their research and expertise. We wish you all the best, and a happy and healthy new year. Kind regards, QUTE editorial team P.S. The editorial team is happy to receive overview articles or any kind of proposals, as well as your input and comments at advquantumtech@wiley.com
Received 5 October 2017DOI:https://doi.org/10.1103/PhysRevApplied.8.049902Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.© 2017 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasOptical quantum information processingPhotonicsQuantum fluctuations & noiseQuantum measurementsQuantum metrologyQuantum opticsSingle photon sourcesAtomic, Molecular & Optical