The notion of a wave function refers to a way of describing quantum objects, including individual particles and more complex systems. A wave function assigns a value called probability amplitude to all points in space. The terms “wave” and “amplitude” imply that the objects described by wave functions behave much like waves.
Under the laws of classical physics, there are theoretical limits to these processes. But they are unrealistically high: For instance, we know that a car can never go faster than the speed of light. And no matter how much fuel is on the planet, or how much roadway or how strong the construction methods, no car will get close to going even 10 percent of the speed of light.
Taking advantage of the physical “spin” of quantum elements, a quantum computer will be able to process simultaneously the same data in different ways, enabling it to make projections and analyses much more quickly and efficiently than is now possible. Sppeds of computing will blast out of sight, hackeers will take advantage of this. How do we protect?
potassium droplets might turn out to much better model quantum liquids for future experiments than helium.
A team of Chinese researchers say they have completed the first long-distance quantum secure direct communication, a critical step toward sending messages that are truly safe from eavesdropping.
A quantum theory first proposed nearly 90 years ago has at last been confirmed, potentially galvanising new approaches in fields as diverse as medical biosensing and solar energy storage.