Quantum Communication: Explained
Quantum Communication: Explained. If any aspect of quantum mechanics is ready to be commercialized, it is quantum communication. But what are we talking about? What is
February 18, 2019
Quantum Communication: Explained. If any aspect of quantum mechanics is ready to be commercialized, it is quantum communication. But what are we talking about? What is
Next Iteration of Quantum Repeaters to Help Build the Quantum Internet. A quantum-enabled internet is being sought by many organizations throughout the globe. A key component
French and Swiss research teams have tested varying amplitude and direction of magnetic fields around atoms of the rare earth element, Ytterbium. The teams have found a “magic point” which permits a thousand-fold increase in coherence. Such a discovery helps move along the concept of building quantum computing networks with the aid of quantum repeaters. High-coherence (longevity) is needed to ensure signals sent are alive for the entire distance to the receiver, or the next repeater as the case may be.
Difficulty in maintaining the quantum state of subatomic particles is a major challenge in developing quantum computers. Princeton researchers have managed to maintain quantum data through use of diamonds infused with two carbon atoms per every silicon atom. These ‘flawed’ diamonds ‘could serve as quantum repeaters for networks based on qubits’ just as current networking systems have repeaters to keep signals strong between sender and receiver.
Physicists at the Swiss Federal Institute of Technology in Zurich, Switzerland, have successfully transferred two qubits via coaxial cable. Using a microwave photon resonator to transmit the qubit state, the quantum state was successfully transmitted to a second qubit through the cable; a distance of about 2 meters. With a transmission success rate of 80 percent, the process was repeatable upwards of 50,000 times per second. The team’s next goal is to enable entanglement swapping – using qubits to transmit and receive. If successful, the technique could open up avenues for larger quantum computers.
Photons are the quantum of light. Phonons are the quantum of sound. Studies at the Vienna University of Technology are suggesting the use of phonons to transfer quantum information.
Twin-field quantum key distribution (TF-QKD) has been publicly announced by a team of scientists from Toshiba Research in the U.K. Seeking to extend the range of QKDs with an improvement in bandwidth. Simply, a quantum repeater is placed between two communicating parties. Both parties send their code to the repeater which then relays measurements of the entangled signals.
Quantum Communications with Photon Colors, Essentially. Measuring the properties of spectral lines from single photons is that much more precise, or so we think, thanks
