Physics

Moving closer to practical photonic quantum computing

For the first time, researchers have demonstrated a way to map and measure large-scale photonic quantum correlation with single-photon sensitivity. The ability to measure thousands of instances of quantum correlation is critical for making photon-based quantum computing practical.

Life is a Highway (of Flying Space Rocks)

It has been a great week for humans banging on things around the solar system. Japan's Hayabusa2 probe touched down and grabbed a sample of asteroid Ryugu; NASA's InSight is hammering into the surface of Mars; and a private Israeli spacecraft named Beresheet is heading toward an April landing on the Moon. But we are just beginners at the game. Nature has been banging and moving things around in the solar system for billions of years--and doing it with impressive efficiency.

Case in point:

Exchanging information securely using quantum communication in future fiber-optic networks

Searching for better security during data transmission, governments and other organizations around the world have been investing in and developing technologies related to quantum communication and related encryption methods. Researchers are looking at how these new systems -- which, in theory, would provide unhackable communication channels -- can be integrated into existing and future fiber-optic networks.

First sypersymmetric laser array

A team of researchers has overcome a long-standing problem in laser science, and the findings could have applications in surgery, drilling and 3D laser mapping.

Code used to reduce quantum error in logic gates for first time

Scientists have for the first time demonstrated improvement in quantum computers by using codes designed to detect and discard errors in the logic gates of such machines. The codes were applied to IBM's quantum computer via IBM Q.

Cooperativity and entanglement pave way for ground-state cooling using nitrogen vacancy centers

Center for Nanoscale Materials researchers present a quantum model for achieving ground-state cooling in low frequency mechanical resonators and show how cooperativity and entanglement are key factors to enhance the cooling figure of merit.

Large Hadron Collider upgrade project leaps forward

The U.S. Large Hadron Collider Accelerator Upgrade Project is the Fermilab-led collaboration of U.S. laboratories that, in partnership with CERN and a dozen other countries, is working to upgrade the Large Hadron Collider. LHC AUP began just over two years ago and, on Feb. 11, it received key approvals, allowing the project to transition into its next steps.

Good news for future tech: Exotic 'topological' materials are surprisingly common

Once thought rare, strangely behaving substances called 'topological materials' are in fact quite common, a finding that bodes well for their potential use in future electronics. An international team of researchers has assembled an online catalog, based on the periodic table, to make it easy to design new versions of these unusual materials.

Immunizing quantum computers against errors

Researchers have used trapped calcium ions to demonstrate a new method for making quantum computers immune to errors. To do so, they created a periodic oscillatory state of an ion that circumvents the usual limits to measurement accuracy.

Big data at the atomic scale: New detector reaches new frontier in speed

Advances in electron microscopy – using electrons as imaging tools to see things well beyond the reach of conventional microscopes that use light – have opened up a new window into the nanoscale world and brought a wide range of samples into focus as never before.

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