A Graphene Superconductor That Plays More Than One Tune

Researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have developed a graphene device that’s thinner than a human hair but has a depth of special traits. It easily switches from a superconducting material that conducts electricity without losing any energy, to an insulator that resists the flow of electric current, and back again to a superconductor — all with a simple flip of a switch. [Read More]

Quantum Control With Light Paves Way For Ultra-Fast Computers

Terahertz light can control some of the essential quantum properties of superconducting states, report researchers. Jigang Wang patiently explains his latest discovery in quantum control that could lead to superfast computing based on quantum mechanics: He mentions light-induced superconductivity without energy gap. He brings up forbidden supercurrent quantum beats. And he mentions terahertz-speed symmetry breaking. Then he backs up and clarified all that. After all, the quantum world of matter and energy at terahertz and nanometer scales — trillions of cycles per second and billionths of meters — is still a mystery to most of us. [Read More]

Quantum Computer And Mezzo Soprano To Duet In World First Performance

What happens when you combine the pure tones of an internationally renowned mezzo soprano and the complex technology of a $15 million quantum supercomputer? The answer will be exclusively revealed to audiences at the Port Eliot Festival when Superposition, created by Plymouth University composer Alexis Kirke, receives its world premiere later this summer. Combining the arts and sciences, as Dr Kirke has done with many of his previous works, the 15-minute piece will begin dark and mysterious with celebrated performer Juliette Pochin singing a low-pitched slow theme. [Read More]

Reliable Quantum Computing Superconducting Qubit Array

A new level of reliability in a five-qubit array has been achieved by a team of physicists at UC Santa Barbara. This moves us a step closer to making a quantum computer a reality. A functional quantum computer is a dream of many physicists. Contrasted with regular computers, the quantum computer would use quantum bits, or qubits, which make use of the multiple states of quantum phenomena. When built, a quantum computer would have millions of times power at certain computations than today’s supercomputers. [Read More]