tag: quantum computing

Watching Qubits At Work
By Katherine Derbyshire - 18 Aug, 2014 - Comments: 0

As previously discussed, part of the appeal of qubits based on nitrogen-vacancy (N-V) defect centers in diamond is the ability to manipulate them with light. Light pulses can be used both to initialize the qubit array and to measure the results of quantum computations. As recent work at The University of Chicago shows, light can also be used to study the evolution of the quantum state in the... » read more

Reading About Quantum Computing
By Katherine Derbyshire - 14 Aug, 2014 - Comments: 1

For the last several months, I’ve been working on a series of articles about quantum computing: how quantum computers are different from conventional computers, what materials systems might be appropriate for use in qubits, and, for the upcoming last article, how one might actually build and program a quantum computer. Some of the subtopics are familiar ground for me, and probably for most... » read more

Not All Qubits Are Small
By Katherine Derbyshire - 30 Jun, 2014 - Comments: 1

While diamond nitrogen-vacancy centers offer one attractive implementation of quantum qubits, many other systems have been proposed. In theory, at least, any system with clearly identifiable quantum states can serve the purpose. The challenge lies in finding a system in which those states can be manipulated and measured by external forces and can be fabricated in large enough numbers for practi... » read more

More To Quantum Computing Than Qubits
By Katherine Derbyshire - 09 Jun, 2014 - Comments: 1

A couple of weeks ago, I posted an article about qubits based on the nitrogen-vacancy (N-V) center in diamond. I’m working on one about qubits based on superconducting loops with Josephson junctions. But it’s important to remember that the qubit technology alone tells only part of the story of a quantum computer. Quantum computers, like conventional computers, need ways to store data and wa... » read more

Introduction To Quantum Computing
By Katherine Derbyshire - 28 Apr, 2014 - Comments: 2

Quantum computing has attracted a lot of attention lately. Recent revelations about the extent of the U.S. National Security Agency’s data collection programs, along with several large-scale corporate data breaches, have called attention to the need for secure communications. Quantum computing has potentially far-reaching implications for data security, both reducing the effectiveness of conv... » read more

System Bits: April 8
By Ann Mutschler - 08 Apr, 2014 - Comments: 0

Quantum photon properties revealed in plasmon particle For years, researchers have been interested in developing quantum computers—the theoretical next generation of technology that will outperform conventional computers that involves storing information in qubits rather than in bits used by computers today. One approach for computing with qubits relies on the creation of two single photons ... » read more

Quantum Computer Race Heats Up
By Mark LaPedus - 20 Feb, 2014 - Comments: 0

For years, there has been an intense race among various nations to develop the world’s fastest supercomputers. The U.S. and Japan led the field until 2010, when China stunned the market and rolled out the world’s fastest supercomputer. And today, China continues to lead the field with a supercomputer capable of running at speeds of 33.86 petaflops per second. While the supercomputer race... » read more

System Bits: Jan. 28
By Ann Mutschler - 28 Jan, 2014 - Comments: 0

Collaborative software for linking performance, cost Researchers from Georgia Tech have created a web-based tool that lets physically-separated participants collaborate on model-based systems engineering projects. Referred to as the Framework for Assessing Cost and Technology (FACT), the program utilizes open-source software components to allow users to visualize a system's potential expens... » read more

System Bits Nov 26
By Brian Bailey - 26 Nov, 2013 - Comments: 0

Scaling The Quantum Slopes Like any task, there are easy and hard ways to control atoms and molecules as quantum systems, which are driven by tailored radiation fields. More efficient methods for manipulating quantum systems could help scientists realize the next generation of technology by harnessing atoms and molecules to create small but incredibly powerful devices, such as molecular electr... » read more

System Bits: July 9
By Ann Mutschler - 09 Jul, 2013 - Comments: 0

New quantum computing algorithm Researchers at the University of California, San Diego, have proposed a new algorithm for quantum computing that they believe will speed a particular type of problem…but swifter calculations would come at the cost of greater physical resources devoted to precise timekeeping. The algorithm would be used to conduct a task called an unstructured search. The go... » read more

← Older posts Newer posts →

  • Sponsors

About

Navigation

Connect With Us

Copyright ©2013-2025 SMG   |  Terms of Service  |  Privacy Policy