Home > Press > New method cracked for high-capacity, secure quantum communication
The signal photon, manipulated by the integrated photonic circuit, creates a 4D qudit represented by the set of orange spheres. Meanwhile, the idler photon, represented by the blue sphere, acts as a remote control for the signal photon. CREDIT by Haoqi Zhao, Yichi Zhang, Zihe Gao, Jieun Yim, Shuang Wu, Natalia M. Litchinitser, Li Ge, and Liang Feng |
Abstract:
Scientists have made a significant breakthrough in creating a new method for transmitting quantum information using particles of light called qudits. These qudits promise a future quantum internet that is both secure and powerful.
Traditionally, quantum information is encoded on qubits, which can exist in a state of 0, 1, or both at the same time (superposition). This quality makes them ideal for complex calculations but limits the amount of data they can carry in communication. Conversely, qudits can encode information in higher dimensions, transmitting more data in a single go.
The new technique harnesses two properties of light – spatial mode and polarization – to create four-dimensional qudits. These qudits are built on a special chip that allows for precise manipulation. This manipulation translates to faster data transfer rates and increased resistance to errors compared to conventional methods.
One of the key advantages of this approach is the qudits' ability to maintain their quantum properties over long distances. This makes them perfect for applications like satellite-based quantum communication, where data needs to travel vast distances without losing its integrity.
The process starts with generating a special entangled state using two photons. Entanglement is a phenomenon where two particles become linked, sharing the same fate regardless of physical separation. In this case, one photon (the signal photon) is manipulated on the chip to create a 4D qudit using its spatial mode and polarization. The other photon (idler photon) remains unchanged and acts as a remote control for the signal photon (Fig. 1). By manipulating the idler photon, scientists can control the state of the signal photon and encode information onto it (Fig. 2).
This new method has the potential to revolutionize the field of quantum communication. It paves the way for a high-speed quantum internet that can transmit massive amounts of data securely over long distances. Additionally, it can lead to the development of unbreakable encryption protocols and contribute to the creation of powerful quantum computers capable of tackling problems beyond the reach of classical computers.
The researchers are currently focusing on improving the accuracy of the qudits and scaling up the technology to handle even higher dimensions. They believe this approach has the potential to revolutionize quantum communication.
####
For more information, please click here
Contacts:
Media Contact
WEI ZHAO
Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP), Chinese Academy of Sciences
Office: 86-431-861-76852
Expert Contact
Liang Feng
Department of Materials Science and Engineering, University of Pennsylvania
Copyright © Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP), Chinese Academy of Sciences
If you have a comment, please Contact us.Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Related Links |
Related News Press |
News and information
Beyond wires: Bubble technology powers next-generation electronics:New laser-based bubble printing technique creates ultra-flexible liquid metal circuits November 8th, 2024
Nanoparticle bursts over the Amazon rainforest: Rainfall induces bursts of natural nanoparticles that can form clouds and further precipitation over the Amazon rainforest November 8th, 2024
Nanotechnology: Flexible biosensors with modular design November 8th, 2024
Exosomes: A potential biomarker and therapeutic target in diabetic cardiomyopathy November 8th, 2024
Quantum Physics
Energy transmission in quantum field theory requires information September 13th, 2024
Quantum researchers cause controlled ‘wobble’ in the nucleus of a single atom September 13th, 2024
Physicists unlock the secret of elusive quantum negative entanglement entropy using simple classical hardware August 16th, 2024
Searching for dark matter with the coldest quantum detectors in the world July 5th, 2024
Quantum communication
Physicists unlock the secret of elusive quantum negative entanglement entropy using simple classical hardware August 16th, 2024
Physics
Physicists unlock the secret of elusive quantum negative entanglement entropy using simple classical hardware August 16th, 2024
Finding quantum order in chaos May 17th, 2024
Possible Futures
Nanotechnology: Flexible biosensors with modular design November 8th, 2024
Exosomes: A potential biomarker and therapeutic target in diabetic cardiomyopathy November 8th, 2024
Turning up the signal November 8th, 2024
Nanofibrous metal oxide semiconductor for sensory face November 8th, 2024
Chip Technology
Nanofibrous metal oxide semiconductor for sensory face November 8th, 2024
New discovery aims to improve the design of microelectronic devices September 13th, 2024
Groundbreaking precision in single-molecule optoelectronics August 16th, 2024
Quantum Computing
New quantum encoding methods slash circuit complexity in machine learning November 8th, 2024
Quantum researchers cause controlled ‘wobble’ in the nucleus of a single atom September 13th, 2024
Researchers observe “locked” electron pairs in a superconductor cuprate August 16th, 2024
Physicists unlock the secret of elusive quantum negative entanglement entropy using simple classical hardware August 16th, 2024
Optical computing/Photonic computing
Groundbreaking precision in single-molecule optoelectronics August 16th, 2024
Aston University researcher receives £1 million grant to revolutionize miniature optical devices May 17th, 2024
Discoveries
Breaking carbon–hydrogen bonds to make complex molecules November 8th, 2024
Exosomes: A potential biomarker and therapeutic target in diabetic cardiomyopathy November 8th, 2024
Turning up the signal November 8th, 2024
Nanofibrous metal oxide semiconductor for sensory face November 8th, 2024
Announcements
Nanotechnology: Flexible biosensors with modular design November 8th, 2024
Exosomes: A potential biomarker and therapeutic target in diabetic cardiomyopathy November 8th, 2024
Turning up the signal November 8th, 2024
Nanofibrous metal oxide semiconductor for sensory face November 8th, 2024
Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters
Beyond wires: Bubble technology powers next-generation electronics:New laser-based bubble printing technique creates ultra-flexible liquid metal circuits November 8th, 2024
Nanoparticle bursts over the Amazon rainforest: Rainfall induces bursts of natural nanoparticles that can form clouds and further precipitation over the Amazon rainforest November 8th, 2024
Nanotechnology: Flexible biosensors with modular design November 8th, 2024
Exosomes: A potential biomarker and therapeutic target in diabetic cardiomyopathy November 8th, 2024
Photonics/Optics/Lasers
Groundbreaking precision in single-molecule optoelectronics August 16th, 2024
Single atoms show their true color July 5th, 2024
The latest news from around the world, FREE | ||
Premium Products | ||
Only the news you want to read!
Learn More |
||
Full-service, expert consulting
Learn More |
||