IT News - Technology

Quantum key distribution (QKD) is a method used for secure or secret key exchanges between two remote users.

"Using secure communication, cyberscientists ultimately aim to establish a global quantum network," writes Thamarasee Jeewandara in Phy.org.

"Existing field tests suggest that such quantum networks are feasible. To achieve a practical quantum network, several challenges must be overcome including the realization of varied topologies at large scales, simple network maintenance and robustness to node failures. In a new report now published on Science Advances, Teng-Yun Chen and a research team in quantum physics, quantum information and interdisciplinary information sciences in China, presented a field operation of a quantum metropolitan area network with 46 nodes..."


Quantum Computing Memory And Storage
Forbes, September 28th, 2021
At the 2021 SNIA Storage Developers Conference (SDC) Doug Finke, Managing Editor of the Quantum Computing Report talked about how storage and memory will play roles in Quantum Computing (QC) and how quantum computing can play a role in discovery and optimization in the storage industry.

"The figures below are from his presentation, with my commentary," writes Tom Coughlin in Forbes.

"There has been much discussion about the future of quantum computing. Briefly, quantum computing uses physical quantum mechanical processes such as superposition and entanglement to create a processing device. The Qubits in quantum computing can hold an exponential number of states using superposition and entanglement which can be an equivalent number of bits.

N-qubits is comparable to 2n bits. To get an idea what this means, Finke said that 100 qubits can hold more states than all the hard disk drives in the world. 300 qubits can hold more states than the number of atoms in the universe. However, qubits will collapse (or decohere) to a single 0 or 1 state due to small environmental disturbances..."

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