Tag: quantum

A Quantum Technology Speed Boost And The Search For Dark Matter
SCIENCE

A Quantum Technology Speed Boost And The Search For Dark Matter

Nearly a century after dark matter was first proposed to explain the motion of galaxy clusters, physicists still have no idea what it’s made of. Researchers around the world have built dozens of detectors in hopes of discovering dark matter. As a graduate student, I helped design and operate one of these detectors, aptly named HAYSTAC. But despite decades of experimental effort, scientists have yet to identify the dark matter particle. Now, the search for dark matter has received an unlikely assist from technology used in quantum computing research. In a new paper published in the journal Nature, my colleagues on the HAYSTAC team and I describe how we used a bit of quantum trickery to double the rate at which our detector can search for dark matter. Our result adds a much-needed speed bo...
A quantum computing future is unlikely, due to random hardware errors
TECHNOLOGY

A quantum computing future is unlikely, due to random hardware errors

Google announced this fall to much fanfare that it had demonstrated “quantum supremacy” – that is, it performed a specific quantum computation far faster than the best classical computers could achieve. IBM promptly critiqued the claim, saying that its own classical supercomputer could perform the computation at nearly the same speed with far greater fidelity and, therefore, the Google announcement should be taken “with a large dose of skepticism.” Artist’s rendition of the Google processor. Forest Stearns, Google AI Quantum Artist in Residence, CC BY-ND                                               This wasn’t the first time someone cast doubt on quantu...
TECHNOLOGY

Google touts quantum computing milestone

Quantum processor completes task in minutes that would take traditional supercomputer thousands of years, Google says. Google has said it has achieved a breakthrough in quantum computing research, saying an experimental quantum processor has completed a calculation in just a few minutes that would take a traditional supercomputer thousands of years. The findings, published on Wednesday in the scientific journal Nature, show that "quantum speedup is achievable in a real-world system and is not precluded by any hidden physical laws," the researchers wrote. Quantum computing is a nascent and somewhat bewildering technology for vastly sped-up information processing. Quantum computers might one day revolutionise tasks that would take existing computers years, includin...