#jqi

New Hole-Punched Crystal Clears a Path for Quantum Light

Optical highways for light are at the heart of modern communications. But when it comes to guiding individual blips of light called photons, reliable transit is far less common. Now, a collaboration of researchers from the Joint Quantum Institute (JQI), led by JQIFellows Mohammad Hafezi and Edo Waks, has created a photonic chip that both generates single photons, and steers them around. The…

Machine learning, the field that’s driving a revolution in artificial intelligence, has cemented its role in modern technology. Its tools and techniques have led to rapid improvements in everything from self-driving cars and speech recognition to the digital mastery of an ancient board game.

Now, physicists are beginning to use machine learning tools to tackle a different kind of problem, one at…

A team of researchers has devised a simple way to tune a hallmark quantum effect in graphene—the material formed from a single layer of carbon atoms—by bathing it in light. Their theoretical work, which was published recently in Physical Review Letters(link is external), suggests a way to realize novel quantum behavior that was previously predicted but has so far remained inaccessible in experime…

A New Quantum Computer Module – Programmable Ions Set the Stage for General-Purpose Quantum Computers

Close-up photo of an ion trap. Credit: S. Debnath and E. Edwards/JQI

“Making a quantum computer that can run arbitrary algorithms requires the right kind of physical system and a suite of programming tools. Atomic ions, confined by fields from nearby electrodes, are among the most promising platforms for meeting these needs.”

Quantum computers promise speedy solutions to some difficult problems,…

The White House announced today a new report from the National Science and Technology Council on challenges, opportunities and the path forward in quantum information science, including a plan for high-performance computing.

As described in a White House blog post from the Office of Science and Technology Policy (OSTP), Advancing Quantum Information Science: National Challenges and Opportunitiesi…

Every electrical device, from a simple lightbulb to the latest microchips, is enabled by the movement of electrical charge, or current. The nascent field of ‘spintronics’ taps into a different electronic attribute, an intrinsic quantum property known as spin, and may yield devices that operate on the basis of spin-transport.

Atom-optical latticesystems offer a clean, well-controlled way to study…