9 Lives or 20 Qubits, It’s Schrodinger’s Cat
9 Lives or 20 Qubits, It’s Schrodinger’s Cat Schrödinger’s cat with 20 qubits In brief… + Dead or alive, left-spinning or right-spinning—in the quantum world particles such as the famous analogy of Schrödinger’s cat can be all these things at the same time. An international team, including researchers from several leading American universities, together with […]
The Basics of Quantum Computing in Two Pages
The Basics of Quantum Computing in Two Pages Take it for what its worth. There may be more succinct explanations out there, but this is an example of what is out there. Much work to do at this early stage in the quantum computing era. Qubit. The basics of quantum computing—A tutorial Selected notes ~ […]
The Meaning of ‘Quantum Supremacy’
The Meaning of ‘Quantum Supremacy’ What Does Quantum Supremacy Mean? Selected notes ~ + Quantum supremacy is the experimental demonstration that quantum computers are superior to classical computers. That is, demonstrating quantum supremacy requires doing a calculation on a quantum computer that no classical computer could replicate in a reasonable amount of time. Will this […]
Semiconductors and Quantum Spin Showing Promise in Quantum Computing
Semiconductors and Quantum Spin Showing Promise in Quantum Computing Quantum computing with semiconductor spins Selected notes ~ + Functional and scalable qubits must meet well-defined criteria. First, reliably initializing each qubit into one of its two levels must be possible. Second, the final state of each qubit must be knowable by a projective measurement that […]
A single-photon source you can make at home
Quantum computing and quantum cryptography are expected to give much higher capabilities than their classical counterparts. For example, the computation power in a quantum system may grow at a double exponential rate instead of a classical linear rate due to the different nature of the basic unit, the qubit (quantum bit). Entangled particles enable the […]
Quantum Teleportation Beyond Qubits
Quantum Teleportation Beyond Qubits “Qutrit” Experiments Are a First in Quantum Teleportation Excerpts and salient points ~ + “Teleportation” also conjures visions of faster-than-light communication, but that picture is wrong, too. If Alice wants to send Bob a message via quantum teleportation, she has to accompany it with classical information transported via photons—at the speed […]
Topological Insulators: Bismuth is Better than Previously Thought
Topological Insulators: Bismuth is Better than Previously Thought High performance computing, quantum computing, and other quantum technologies are advanced when research, such as that reported by MIT, finds practical applications. Superconductors, superconductivity, superconducting materials are seen as a conduit to advancing the world into the 4th Industrial Revolution Because quantum is coming. Qubit. New insights […]
Stanford Researchers Design Light Trapping Crystal; Entanglement and Quantum Computing Applications Envisioned
Stanford Researchers Design Light Trapping Crystal; Entanglement and Quantum Computing Applications Envisioned Stanford researchers design a light-trapping, color-converting crystal In brief… + Five years ago, Stanford postdoctoral scholar Momchil Minkov encountered a puzzle that he was impatient to solve. At the heart of his field of nonlinear optics are devices that change light from one […]
U.S. Led Research Building Long-distance Quantum Network Foundation
U.S. Led Research Building Long-distance Quantum Network Foundation Researchers at Brookhaven National Laboratory have made strides in putting together a “true quantum internet.” The below excerpts are from a detailed piece about the team’s work. Well worth the read; covers many aspects of the network from technology and hardware to experimentation. Qubit. Building a Network […]
Machine Learning, Artificial Intelligence, Neural Networks and the Quantum World
Machine Learning, Artificial Intelligence, Neural Networks and the Quantum World Which One Is the Perfect Quantum Theory? Excerpts and salient points ~ + For some phenomena in quantum many-body physics several competing theories exist. But which of them describes a quantum phenomenon best? A team of researchers from the Technical University of Munich (TUM) and […]