Advertisement
more top stories »

Quantum Computing


— Quantum Computing

Quantum computers inch closer to reality thanks to entangled qubits in silicon

Practical quantum computers are still years away, but lately the pace of research seems to have picked up. After building the basic blocks of a quantum computer in silicon and storing quantum information for up to 30 seconds, scientists at the University of New South Wales (UNSW) have now violated a principle of classical physics to demo for the first time a pair of entangled, high-fidelity quantum bits (qubits) in silicon. The advance could help unleash the power of a new kind of computation that would affect everything from data cryptography to drug design, overnight deliveries and subatomic particle experiments.

Read More
— Quantum Computing

Quantum computing breakthrough: Qubits made from standard silicon transistors

In what is likely a major breakthrough for quantum computing, researchers from the University of New South Wales (UNSW) in Australia have managed for the first time to build the fundamental blocks of a quantum computer in silicon. The device was created using standard manufacturing techniques, by modifying current-generation silicon transistors, and the technology could scale up to include thousands, even millions of entangled quantum bits on a single chip. Gizmag spoke to the lead researchers to find out more.

Read More
— Electronics

Breakthrough photonic processor promises quantum computing leap

Optical quantum computers promise to deliver processing performance exponentially faster and more powerful than today's digital electronic microprocessors. To make this technology a reality, however, photonic circuitry must first become at least as efficient at multi-tasking as the microprocessors they are designed to replace. Towards this end, researchers from the University of Bristol and Nippon Telegraph and Telephone (NTT) claim to have developed a fully-reprogrammable quantum optical chip able to encode and manipulate photons in an infinite number of ways. Read More
— Quantum Computing

New dimensions of quantum information added through hyperentanglement

In quantum cryptography, encoding entangled photons with particular spin states is a technique that ensures data transmitted over fiber networks arrives at its destination without being intercepted or changed. However, as each entangled pair is usually only capable of being encoded with one state (generally the direction of its polarization), the amount of data carried is limited to just one quantum bit per photon. To address this limitation, researchers have now devised a way to "hyperentangle" photons that they say can increase the amount of data carried by a photon pair by as much as 32 times.

Read More
— Physics

First-ever quantum device that detects and corrects its own errors

Before the dream of quantum computing is realized, a number of inherent problems must first be solved. One of these is the ability to maintain a stable memory system that overcomes the intrinsic instability of the basic unit of information in quantum computing – the quantum bit or "qubit". To address this problem, Physicists working at the University of California Santa Barbara (UC Santa Barbara) claim to have created breakthrough circuitry that continuously self-checks for inaccuracies to consistently maintain the error-free status of the quantum memory. Read More
— Quantum Computing

New records bring super-powerful quantum computers closer to reality

In what are claimed to be new world records, two teams working in parallel at the University of New South Wales (UNSW) in Australia have each found solutions to problems facing the advancement of silicon quantum computers. The first involves processing quantum data with an accuracy above 99 percent, while the second is the ability to store coherent quantum information for more than thirty seconds. Both of these records represent milestones in the eventual realization of super-powerful quantum computers. Read More
— Science

Australian researchers simulate a time-traveling photon

Researchers at the University of Queensland, Australia claim to have simulated the behavior of a single photon traveling back in time and interacting with an older version of itself, in an effort to investigate how such a particle would behave. Their results suggest that, under such circumstances, the laws of quantum mechanics would stretch to become even more bizarre than they already are. Read More
Advertisement
Advertisement
Advertisement
Advertisement
Advertisement