Archive for the ‘quantum physics’ category: Page 618
Dec 11, 2018
IonQ Has the Most Powerful Quantum Computers With 79 Trapped Ion Qubits and 160 Stored Qubits
Posted by Klaus Baldauf in categories: computing, quantum physics
IonQ just made a presentation on two new trapped ion quantum computers with 160 stored and 79 processing qubits. This is more qubits than the best noisy superconducting quantum computers which is currently the Google 72 Qubit Bristlecone processor.
* IonQ systems are at room temperature
* IonQ manipulates ions with magnets and lasers and have software control on mostly FPGA chips.
Dec 11, 2018
How developments in Quantum Computing could affect cryptocurrencies
Posted by Genevieve Klien in categories: bitcoin, computing, cryptocurrencies, economics, mathematics, particle physics, quantum physics
by Eloisa Marchesoni
Today, I will talk about the recent creation of really intelligent machines, able to solve difficult problems, to recreate the creativity and versatility of the human mind, machines not only able to excel in a single activity but to abstract general information and find solutions that are unthinkable for us. I will not talk about blockchain, but about another revolution (less economic and more mathematical), which is all about computing: quantum computers.
Quantum computing is not really new, as we have been talking about it for a couple of decades already, but we are just now witnessing the transition from theory to realization of such technology. Quantum computers were first theorized at the beginning of the 1980s, but only in the last few years, thanks to the commitment of companies like Google and IBM, a strong impulse has been pushing the development of these machines. The quantum computer is able to use quantum particles (imagine them to be like electrons or photons) to process information. The particles act as positive or negative (i., the 0 and the 1 that we are used to see in traditional computer science) alternatively or at the same time, thus generating quantum information bits called “qubits”, which can have value either 0 or 1 or a quantum superposition of 0 and 1.
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Dec 7, 2018
We Need to Prepare For Quantum Attacks Now, Top US Scientists Warn
Posted by Genevieve Klien in categories: biotech/medical, cybercrime/malcode, engineering, information science, quantum physics
The promise of quantum computing brings with it some mind-blowing potential, but it also carries a new set of risks, scientists are warning.
Specifically, the enormous power of the tech could be used to crack the best cyber security we currently have in place.
A new report on the “progress and prospects” of quantum computing put together by the National Academies of Sciences, Engineering, and Medicine (NASEM) in the US says that work should start now on putting together algorithms to beat the bad guys.
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Dec 7, 2018
Harnessing the power of ‘spin orbit’ coupling in silicon: Scaling up quantum computation
Posted by Saúl Morales Rodriguéz in categories: computing, particle physics, quantum physics
Australian scientists have investigated new directions to scale up qubits—utilising the spin-orbit coupling of atom qubits—adding a new suite of tools to the armory.
Spin-orbit coupling, the coupling of the qubits’ orbital and spin degree of freedom, allows the manipulation of the qubit via electric, rather than magnetic-fields. Using the electric dipole coupling between qubits means they can be placed further apart, thereby providing flexibility in the chip fabrication process.
In one of these approaches, published in Science Advances, a team of scientists led by UNSW Professor Sven Rogge investigated the spin-orbit coupling of a boron atom in silicon.
Dec 6, 2018
Scientists enter unexplored territory in superconductivity search
Posted by Genevieve Klien in categories: energy, mapping, quantum physics
Scientists mapping out the quantum characteristics of superconductors—materials that conduct electricity with no energy loss—have entered a new regime. Using newly connected tools named OASIS at the U.S. Department of Energy’s Brookhaven National Laboratory, they’ve uncovered previously inaccessible details of the “phase diagram” of one of the most commonly studied “high-temperature” superconductors. The newly mapped data includes signals of what happens when superconductivity vanishes.
Dec 6, 2018
Student engineers an interaction between two qubits using photons
Posted by Genevieve Klien in categories: computing, quantum physics
Dec 5, 2018
Experiments Suggest Humans Can Directly Observe the Quantum
Posted by Xavier Rosseel in category: quantum physics
Dec 5, 2018
Quantum computers put blockchain security at risk
Posted by Derick Lee in categories: bitcoin, computing, cryptocurrencies, encryption, finance, government, health, internet, quantum physics, security
The longer-term answer is to develop and scale up the quantum communication network and, subsequently, the quantum internet. This will take major investments from governments. However, countries will benefit from the greater security offered13. For example, Canada keeps its census data secret for 92 years, a term that only quantum cryptography can assure. Government agencies could use quantum-secured blockchain platforms to protect citizens’ personal financial and health data. Countries leading major research efforts in quantum technologies, such as China, the United States and members of the European Union, will be among the early adopters. They should invest immediately in research. Blockchains should be a case study for Europe’s Quantum Key Distribution Testbed programme, for example.
Bitcoin and other cryptocurrencies will founder unless they integrate quantum technologies, warn Aleksey K. Fedorov, Evgeniy O. Kiktenko and Alexander I. Lvovsky. Bitcoin and other cryptocurrencies will founder unless they integrate quantum technologies, warn Aleksey K. Fedorov, Evgeniy O. Kiktenko and Alexander I. Lvovsky.
Dec 5, 2018
Experts say it’s high time to create new cryptography for quantum computing age
Posted by Genevieve Klien in categories: computing, encryption, quantum physics
https://youtube.com/watch?v=WVv5OAR4Nik
A new report says it could take more than a decade to develop new cryptography schemes to keep data secure when quantum computers hit prime time.