To demonstrate that a cloud of atoms can be used as a receiver to pick up video broadcasts, researchers have developed an atomic television. The television uses atomic clouds and lasers to carry a video signal that conforms to the traditional resolution standard. It is believed that atom-based communication systems are smaller and can tolerate more noise than conventional electronics. The atoms used in the device were prepared in high-energy Rydberg states, which are unusually sensitive to electromagnetic fields, including radio signals.
The team from the National Institute of Standards and Technology (NIST), USA, has prepared gaseous rubidium atoms in Rydberg states in a glass container using two different color lasers. To receive signals, a stable radio signal is placed on the atom-filled glass container. Here, the energy shifts in the Rydberg atoms that modulate the carrier signal can be detected by the team.
After this, the modulated output is fed to the television, whereupon an analog-to-digital converter converts the signals into a videographic array format for display. When a live video signal or game is to be displayed, the input is sent from a video camera to modulate the original carrier signal. This signal is then fed to a horn antenna which directs the transmission to the atoms.
The original signal carrier is used as a reference and the final video output detected by the atoms is compared to it to evaluate the system. “We figured out how to stream and receive videos through the Rydberg atom sensors. Now we’re doing video streaming and quantum gaming, where we’re streaming video games through the atoms. We basically encoded the video game on a signal and detected it with the atoms. output is sent directly to the TV,” said Chris Holloway, project leader and author of the study.
In the study, published in AVS Quantum Science, the team examined laser beam powers, sizes and detection methods so that video can be received by the atoms in standard definition format. The size of the laser beam affects the average time that the atoms remain in the interaction zone of the laser. The time here is inversely proportional to the receiver’s bandwidth, meaning more data is produced with a smaller beam and shorter time.
For the latest tech news and reviews, follow DailyExpertNews Twitter, Facebook and Google News. Subscribe to our YouTube channel for the latest gadgets and technology videos.
NASA Artemis I SLS-Orion spacecraft launch halted due to engine venting problem: Full details