Quantum Computers
Cosmic Rays May Soon Stymie Quantum Computing
The practicality of quantum computing hangs on the integrity of the quantum bit, or qubit. Qubits, the logic elements of quantum computers, are coherent two-level systems that represent quantum information. Each qubit has the strange ability to be in a quantum superposition, carrying aspects of both states simultaneously, enabling a quantum version of parallel computation. …
More Wrong Answers Get Quantum Computers To Find The Right One
In quantum computers, generating more errors in a given operation may help reveal the right answer, according to new research. Unlike conventional computers, the processing in quantum-based machines is noisy, which produces error rates dramatically higher than those of silicon-based computers. So quantum operations repeat thousands of times to make the correct answer stand out …
Electron Switch May Get Us Closer To Quantum Computers
Quantum computing has the potential to revolutionize technology, medicine, and science by providing faster and more efficient processors, sensors, and communication devices. But transferring information and correcting errors within a quantum system remains a challenge to making effective quantum computers. How Do Quantum Computers Work? A quantum computer operates on the principles of quantum mechanics, …
Quantum – A Double-Edged Sword For Cryptography
Defence, finance, social networking – communications everywhere rely on cryptographic security. Cryptography involves jumbling up messages according to a code, or key, that has too many combinations for even very powerful computers to try out. But quantum computers have an advantage. Unlike regular computers, which process information in ‘bits’ of definite ones and zeros, quantum computers …