Tag Archives: Quantum States

Scientists Save Quantum States in a Diamond, a Tiny Step Toward a Quantum Internet

by Ryan F. Mandelbaum, Gizmodo

A newly created system can enhance quantum communications over longer distances—a small but crucial step toward a quantum internet.

We’re in the early stages of a quantum boom, as researchers are attempting to augment our computing and communications capabilities with systems employing the weird mathematics that govern subatomic particles. One of the core goals of this era are networks that can transmit quantum information over longer scales, which scientists think could lead to advances in cryptography, sensing, or even distributed quantum computation. But these are mainly dreams; such a network cannot truly exist without components like repeaters to extend the distance that quantum information can travel or transducers that can convert quantum information into transmittable photons. This new paper brings the field closer to inventing a quantum repeater.

Continue reading Scientists Save Quantum States in a Diamond, a Tiny Step Toward a Quantum Internet

A New Spin on the Quantum Brain

by Jennifer Ouellette, Quanta Magazine

A new theory explains how fragile quantum states may be able to exist for hours or even days in our warm, wet brain. Experiments should soon test the idea

The mere mention of “quantum consciousness” makes most physicists cringe, as the phrase seems to evoke the vague, insipid musings of a New Age guru. But if a new hypothesis proves to be correct, quantum effects might indeed play some role in human cognition. Matthew Fisher, a physicist at the University of California, Santa Barbara, raised eyebrows late last year when he published a paper in Annals of Physics proposing that the nuclear spins of phosphorus atoms could serve as rudimentary “qubits” in the brain — which would essentially enable the brain to function like a quantum computer. Continue reading A New Spin on the Quantum Brain