January 5, 2019
Improved Quantum Sensing; Nears Heisenberg Limit. The U.S.’s Oak Ridge National Laboratory Quantum Information Science Group is in an on-going quest to reach the elusive edge of possible measurement at the quantum level – the Heisenberg limit. Recent work is considered to be a significant achievement and an indication that a new device employed by the team, called a highly non-linear fiber-based phase-sensitive amplifier will approach this limit. The device uses photon analysis from the intersection of two beams of light. Interferometry involves splitting light into two modes —one sensing a phase change and the other remaining as a reference. The team is looking to “build the most sensitive instruments allowed by quantum mechanics.” Precise measurements at the quantum level are needed for quantum computing to further its advance.
Quantum Computing Processors; The Big 5. Quick synopsis of the Big Five quantum computing processors and where they are headed in 2019. The Big Five are: Rigetti’s 19Q, Google’s Bristlecone, Intel’s Tangle Lake, IBM’s Q, and D-Wave’s 2000Q.
December 28, 2018
“Spin Currents” Studied for Their Significant Performance Improvements. Generating spin-currents without energy loss from materials exhibiting the Rashba-Bychkov effect. “From faster memories to quantum computers, the benefits of better understanding and exploiting Rashba systems will certainly have enormous implications.”
Control of Quantum Dots with Acoustics. Sound waves are being researched to control quantum dots. Essentially, researching an acoustic resonator which focuses acoustics at the nanoscale level is the brunt of the effort. The benefit is in the reduced disruption to the quantum state, rather, the improved coherence tie of the encoded quantum information. This may lend to overcoming one of quantum computing’s largest challenges – decoherence.
U.S. Army Research Laboratory Chief Scientist Picks Quantum Information. Of the advances made in technology this year, the ARL’s chief scientist picked quantum information with minimum distortions as #10 “coolest advance”.
December 17, 2018
IonQ’s Trapped Ion Computing Beating IBM, Google, Rigetti. Though ‘slow’ in operation and impractically large, trapped ion quantum computing from IonQ is beating out the IBM, Google, and Rigetti with accuracy and scalability.
December 14, 2018
Technical Problems Identified as Hindrance to Quantum Computing Advancement. Security and privacy disaster awaits if technical hurdles to quantum computer development are overcome. Hurdles identified are qubit noise rejection, quantum-error correction, and the gap for big dataset ingestion in current quantum computing systems. Further challenges are described and lend to the prediction of quantum computers not being viable for at least the next ten years. Report is found at physicsworld…
December 12, 2018
Cold Computing and Quantum Computers. Keeping it simple though necessary to many aspects of computational computing, cold computing is the idea of lowering the operating temperature of a computer to reap the benefits of increased computational efficiency and energy use. Worth considering and as background awareness…Because Quantum is Coming. Reference is found here…
Muddying the Waters with Quantum Computing. High-performance computing is reaching the confluence of major changes with Moore’s law “coming due”, advances in quantum computing, and a push to jump from exascale to zettascale in processing power. Previously reported. Report found at…Top 500 The List…
December 4, 2018
U.S. DoD Awards $500K for Quantum Market Research. U.S. DoD Awards $500K for market research on current and future quantum capabilities. The project is intended “to show how current and future threat capabilities can be enhanced or materialized through next generation quantum technologies.”