www.sciencedaily.com
Open in
urlscan Pro
13.224.189.73
Public Scan
URL:
https://www.sciencedaily.com/releases/2021/11/211116103147.htm
Submission: On October 20 via manual from PH — Scanned from DE
Submission: On October 20 via manual from PH — Scanned from DE
Form analysis 1 forms found in the DOM
GET /search/
<form action="/search/" method="get" class="navbar-form navbar-right" role="search">
<div class="form-group search">
<div class="input-group">
<label for="keyword" class="display-none">Keyword:</label><input type="text" id="keyword" name="keyword" title="Enter keyword to search" class="form-control hidden-xs" placeholder="Search"><span class="input-group-btn"><button
class="btn btn-default" type="submit" aria-label="search"><i class="fa fa-search"><span class="display-none">Search</span></i></button></span>
<input type="hidden" id="list_view" value="summaries"><input type="hidden" id="saved_summaries"><input type="hidden" id="saved_headlines"><input type="hidden" id="excluded_filenames" value="">
</div>
</div>
</form>Text Content
WE VALUE YOUR PRIVACY
We and our partners store and/or access information on a device, such as cookies
and process personal data, such as unique identifiers and standard information
sent by a device for personalised ads and content, ad and content measurement,
and audience insights, as well as to develop and improve products. With your
permission we and our partners may use precise geolocation data and
identification through device scanning. You may click to consent to our and our
partners’ processing as described above. Alternatively you may click to refuse
to consent or access more detailed information and change your preferences
before consenting. Please note that some processing of your personal data may
not require your consent, but you have a right to object to such processing.
Your preferences will apply to this website only. You can change your
preferences at any time by returning to this site or visit our privacy policy.
MORE OPTIONSDISAGREEAGREE
--------------------------------------------------------------------------------
Your source for the latest research news
Follow Facebook Twitter LinkedIn Subscribe RSS Feeds Newsletters
New:
* Hair Straightening Chemicals and Uterine Cancer
* Ostriches With Similar Interests Form Groups
* Cassini's Unique Observations of Saturn's Rings
* Carnivorous Neanderthals
* Dynamic Neolithic Social Networks
* Giant Kangaroos: Long Reign of PNG's Megafauna
* Soft, Flexible Robotics and Electronics
* Clusters of Genes Help Mice Live Longer
* A New Species of Deep-Sea Fish
* 'Spiderweb' Star: Massive Rippling Dust Plumes
advertisement
Follow all of ScienceDaily's latest research news and top science headlines!
Science News
from research organizations
--------------------------------------------------------------------------------
1
2
A NANOANTENNA FOR LONG-DISTANCE, ULTRA-SECURE COMMUNICATION
RESEARCHERS HAVE IMPROVED THE TRANSFER EFFICIENCY BETWEEN QUANTUM INFORMATION
CARRIERS, IN A MANNER THAT'S BASED ON WELL-ESTABLISHED NANOSCIENCE AND IS
COMPATIBLE WITH UPCOMING ADVANCED COMMUNICATION TECHNOLOGIES
Date: November 16, 2021 Source: Osaka University Summary: Researchers have used
a nanoantenna to focus light onto a single semiconductor nanobox. This approach
will enhance the utility of quantum repeater technology currently under
development for advanced communication and data storage. Such technology is
essential to overcoming the limitations of classical computer information for
securely sharing information over long distances. Share:
FULL STORY
--------------------------------------------------------------------------------
Information storage and transfer in the manner of simple ones and zeros -- as in
today's classical computer technologies -- is insufficient for quantum
technologies under development. Now, researchers from Japan have fabricated a
nanoantenna that will help bring quantum information networks closer to
practical use.
advertisement
--------------------------------------------------------------------------------
In a study recently published in Applied Physics Express, researchers from Osaka
University and collaborating partners have substantially enhanced
photon-to-electron conversion through a metal nanostructure, which is an
important step forward in the development of advanced technologies for sharing
and processing data.
Classical computer information is based on simple on/off readouts. It's
straightforward to use a technology known as a repeater to amplify and
retransmit this information over long distances. Quantum information is based on
comparatively more complex and secure readouts, such as photon polarization and
electron spin. Semiconductor nanoboxes known as quantum dots are materials that
researchers have proposed for storing and transferring quantum information.
However, quantum repeater technologies have some limitations -- for example,
current ways to convert photon-based information to electron-based information
are highly inefficient. Overcoming this information conversion and transfer
challenge is what the researchers at Osaka University aimed to address.
"The efficiency of converting single photons into single electrons in gallium
arsenide quantum dots -- common materials in quantum communication research --
is currently too low," explains lead author Rio Fukai. "Accordingly, we designed
a nanoantenna -- consisting of ultra-small concentric rings of gold -- to focus
light onto a single quantum dot, resulting in a voltage readout from our
device."
The researchers enhanced photon absorption by a factor of up to 9, compared with
not using the nanoantenna. After illuminating a single quantum dot, most of the
photogenerated electrons weren't trapped there, and instead accumulated in
impurities or other locations in the device. Nevertheless, these excess
electrons gave a minimal voltage readout that was readily distinguished from
that generated by the quantum dot electrons, and thus didn't disrupt the
device's intended readout.
"Theoretical simulations indicate that we can improve the photon absorption by
up to a factor of 25," says senior author Akira Oiwa. "Improving the alignment
of the light source and more precisely fabricating the nanoantenna are ongoing
research directions in our group."
These results have important applications. Researchers now have a means of using
well-established nano-photonics to advance the prospects of upcoming quantum
communication and information networks. By using abstract physics properties
such as entanglement and superposition, quantum technology could provide
unprecedented information security and data processing in the coming decades.
--------------------------------------------------------------------------------
Story Source:
Materials provided by Osaka University. Note: Content may be edited for style
and length.
--------------------------------------------------------------------------------
Journal Reference:
1. Rio Fukai, Yuji Sakai, Takafumi Fujita, Haruki Kiyama, Arne Ludwig, Andreas
D. Wieck, Akira Oiwa. Detection of photogenerated single electrons in a
lateral quantum dot with a surface plasmon antenna. Applied Physics Express,
2021; 14 (12): 125001 DOI: 10.35848/1882-0786/ac336d
--------------------------------------------------------------------------------
Cite This Page:
* MLA
* APA
* Chicago
Osaka University. "A nanoantenna for long-distance, ultra-secure communication:
Researchers have improved the transfer efficiency between quantum information
carriers, in a manner that's based on well-established nanoscience and is
compatible with upcoming advanced communication technologies." ScienceDaily.
ScienceDaily, 16 November 2021.
<www.sciencedaily.com/releases/2021/11/211116103147.htm>.
Osaka University. (2021, November 16). A nanoantenna for long-distance,
ultra-secure communication: Researchers have improved the transfer efficiency
between quantum information carriers, in a manner that's based on
well-established nanoscience and is compatible with upcoming advanced
communication technologies. ScienceDaily. Retrieved October 19, 2022 from
www.sciencedaily.com/releases/2021/11/211116103147.htm
Osaka University. "A nanoantenna for long-distance, ultra-secure communication:
Researchers have improved the transfer efficiency between quantum information
carriers, in a manner that's based on well-established nanoscience and is
compatible with upcoming advanced communication technologies." ScienceDaily.
www.sciencedaily.com/releases/2021/11/211116103147.htm (accessed October 19,
2022).
* RELATED TOPICS
* Matter & Energy
* Spintronics
* Physics
* Quantum Computing
* Quantum Physics
* Computers & Math
* Quantum Computers
* Spintronics Research
* Computers and Internet
* Encryption
advertisement
--------------------------------------------------------------------------------
* RELATED TERMS
* Computer vision
* Information and communication technologies
* Quantum entanglement
* Quantum computer
* MRAM
* Virtual reality
* Technology
* Information architecture
advertisement
--------------------------------------------------------------------------------
Print Email Share
--------------------------------------------------------------------------------
advertisement
--------------------------------------------------------------------------------
1
2
3
4
5
Most Popular
this week
--------------------------------------------------------------------------------
SPACE & TIME
Dinosaur-Killing Asteroid Triggered Global Tsunami That Scoured Seafloor
Thousands of Miles from Impact Site
Collision May Have Formed the Moon in Mere Hours, Simulations Reveal
Black Hole Spews out Material Years After Shredding Star
MATTER & ENERGY
Battery Tech Breakthrough Paves Way for Mass Adoption of Affordable Electric Car
Solar Harvesting System Has Potential to Generate Solar Power 24/7
New Algorithms Help Four-Legged Robots Run in the Wild
COMPUTERS & MATH
'Smart Plastic' Material Is Step Forward Toward Soft, Flexible Robotics and
Electronics
Smelling in VR Environment Possible With New Gaming Technology
Seeing Electron Movement at Fastest Speed Ever Could Help Unlock Next-Level
Quantum Computing
advertisement
--------------------------------------------------------------------------------
Strange & Offbeat
--------------------------------------------------------------------------------
SPACE & TIME
Scientists Compile Cassini's Unique Observations of Saturn's Rings
Heaviest Element Yet Detected in an Exoplanet Atmosphere
Dust Plumes Observed Being 'Pushed' Into Interstellar Space by Intense Starlight
MATTER & ENERGY
DNA Gives Colloidal Crystals Shape-Shifting and Memory Abilities
Researchers Develop Automatic Drawing Machine for Making Paper-Based
Metamaterials
'Smart Plastic' Material Is Step Forward Toward Soft, Flexible Robotics and
Electronics
COMPUTERS & MATH
Smelling in VR Environment Possible With New Gaming Technology
Disposable Electronics on a Simple Sheet of Paper
AI Models Can Now Continually Learn from New Data on Intelligent Edge Devices
Like Smartphones and Sensors
Explore More
from ScienceDaily
--------------------------------------------------------------------------------
RELATED STORIES
--------------------------------------------------------------------------------
Silicon Nanopillars for Quantum Communication
Sep. 20, 2022 — Across the world, specialists are working on implementing
quantum information technologies. One important path involves light: Looking
ahead, single light packages, also known as light quanta or ...
A Breakthrough That Enables Practical Semiconductor Spintronics
Apr. 8, 2021 — It may be possible in the future to use information technology
where electron spin is used to store, process and transfer information in
quantum computers. It has long been the goal of scientists to ...
Semiconductor Qubits Scale in Two Dimensions
Mar. 24, 2021 — The heart of any computer, its central processing unit, is built
using semiconductor technology, which is capable of putting billions of
transistors onto a single chip. Now, researchers have shown ...
Researchers Teleport Information Within a Diamond
June 28, 2019 — Researchers have teleported quantum information securely within
the confines of a diamond. The study has big implications for quantum
information technology -- the future of how sensitive information ...
advertisement
--------------------------------------------------------------------------------
Toggle navigation Menu SD
* SD
* Home Page
*
* Top Science News
*
* Latest News
* Home
* Home Page
*
* Top Science News
*
* Latest News
* Health
* View all the latest top news in the health sciences,
or browse the topics below:
Health & Medicine
* Allergy
* Alternative Medicine
* Birth Control
* Cancer
* Diabetes
* Diseases
* Heart Disease
* HIV and AIDS
* Obesity
* Stem Cells
* ... more topics
Mind & Brain
* ADD and ADHD
* Addiction
* Alzheimer's
* Autism
* Depression
* Headaches
* Intelligence
* Psychology
* Relationships
* Schizophrenia
* ... more topics
Living Well
* Parenting
* Pregnancy
* Sexual Health
* Skin Care
* Men's Health
* Women's Health
* Nutrition
* Diet and Weight Loss
* Fitness
* Healthy Aging
* ... more topics
* Tech
* View all the latest top news in the physical sciences & technology,
or browse the topics below:
Matter & Energy
* Aviation
* Chemistry
* Electronics
* Fossil Fuels
* Nanotechnology
* Physics
* Quantum Physics
* Solar Energy
* Technology
* Wind Energy
* ... more topics
Space & Time
* Astronomy
* Black Holes
* Dark Matter
* Extrasolar Planets
* Mars
* Moon
* Solar System
* Space Telescopes
* Stars
* Sun
* ... more topics
Computers & Math
* Artificial Intelligence
* Communications
* Computer Science
* Hacking
* Mathematics
* Quantum Computers
* Robotics
* Software
* Video Games
* Virtual Reality
* ... more topics
* Enviro
* View all the latest top news in the environmental sciences,
or browse the topics below:
Plants & Animals
* Agriculture and Food
* Animals
* Biology
* Biotechnology
* Endangered Animals
* Extinction
* Genetically Modified
* Microbes and More
* New Species
* Zoology
* ... more topics
Earth & Climate
* Climate
* Earthquakes
* Environment
* Geography
* Geology
* Global Warming
* Hurricanes
* Ozone Holes
* Pollution
* Weather
* ... more topics
Fossils & Ruins
* Ancient Civilizations
* Anthropology
* Archaeology
* Dinosaurs
* Early Humans
* Early Mammals
* Evolution
* Lost Treasures
* Origin of Life
* Paleontology
* ... more topics
* Society
* View all the latest top news in the social sciences & education,
or browse the topics below:
Science & Society
* Arts & Culture
* Consumerism
* Economics
* Political Science
* Privacy Issues
* Public Health
* Racial Disparity
* Religion
* Sports
* World Development
* ... more topics
Business & Industry
* Biotechnology & Bioengineering
* Computers & Internet
* Energy & Resources
* Engineering
* Medical Technology
* Pharmaceuticals
* Transportation
* ... more topics
Education & Learning
* Animal Learning & Intelligence
* Creativity
* Educational Psychology
* Educational Technology
* Infant & Preschool Learning
* Learning Disorders
* STEM Education
* ... more topics
* Quirky
* Top News
*
* Human Quirks
* Odd Creatures
* Bizarre Things
* Weird World
Keyword:Search
Free Subscriptions
--------------------------------------------------------------------------------
Get the latest science news with ScienceDaily's free email newsletters, updated
daily and weekly. Or view hourly updated newsfeeds in your RSS reader:
* Email Newsletters
* RSS Feeds
Follow Us
--------------------------------------------------------------------------------
Keep up to date with the latest news from ScienceDaily via social networks:
* Facebook
* Twitter
* LinkedIn
Have Feedback?
--------------------------------------------------------------------------------
Tell us what you think of ScienceDaily -- we welcome both positive and negative
comments. Have any problems using the site? Questions?
* Leave Feedback
* Contact Us
About This Site | Staff | Reviews | Contribute | Advertise | Privacy
Policy | Editorial Policy | Terms of Use
Copyright 1995-2022 ScienceDaily or by other parties, where indicated. All
rights controlled by their respective owners.
Content on this website is for information only. It is not intended to provide
medical or other professional advice.
Views expressed here do not necessarily reflect those of ScienceDaily, its
staff, its contributors, or its partners.
Financial support for ScienceDaily comes from advertisements and referral
programs, where indicated.
— CCPA: Do Not Sell My Information — GDPR: Privacy Settings —
SHARE THIS PAGE ...
A nanoantenna for long-distance, ultra-secure communication: Researchers have
improved the transfer efficiency between quantum information carriers, in a
manner that's based on well-established nanoscience and is compatible with
upcoming advanced communication technologies
https://www.sciencedaily.com/releases/2021/11/211116103147.htm
Researchers have used a nanoantenna to focus light onto a single semiconductor
nanobox. This approach will enhance the utility of quantum repeater technology
currently under development for advanced communication and data storage. Such
technology is essential to overcoming the limitations of classical computer
information for securely sharing information over long distances.
Close