Qubit control tagged posts

Scientists Invent ‘Quantum Flute’ that can make Particles of Light Move Together

UChicago scientists invent 'quantum flute' that can make particles of light move together
A new “quantum flute” experiment by University of Chicago physicists could point the way towards new quantum technology. The holes create different wavelengths, akin to ‘notes’ on a flute, that can be used to encode quantum information. Credit: Photo courtesy of the Schuster lab

Breakthrough could point the way towards new quantum technology. University of Chicago physicists have invented a “quantum flute” that, like the Pied Piper, can coerce particles of light to move together in a way that’s never been seen before.

Described in two studies published in Physical Review Letters and Nature Physics, the breakthrough could point the way towards realizing quantum memories or new forms of error correction in quantum computers, and observing quantum phenomena that cannot be seen in n...

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Moving Electrons around Loops with Light: A Quantum Device based on Geometry

Moving electrons around loops with light: A quantum device based on geometry

This artist’s rendition shows a laser light guiding the evolution of an electronic spin within an atomic-scale defect in diamond. These light-driven loops give rise to a geometric phase, a quantum logic operation that shows remarkable resilience to noise. Credit: Peter Allen

The quantum bit ie ‘qubit’ is represented by a vector, pointing to a simultaneous combination of the 1 and 0 states. To fully implement a qubit, it is necessary to control the direction of this qubit’s vector, which is generally done using fine-tuned and noise-isolated procedures. Researchers have demonstrated the ability to generate a quantum logic operation, or rotation of the qubit, that – surprisingly—is intrinsically resilient to noise as well as to variations in the strength or duration of the control...

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