Quantum

  Chinese physicists realized a genuine entanglement of 18 quantum particles, beating their own world record set in 2016, while the team has set their next goal at 50-qubit entanglement.
The result of the study was published in the US journal Physical Review Letters on June 28. Chinese leading quantum physicist Pan Jianwei led the project. Together with his team, Pan earlier demonstrated quantum entanglement with 10 quantum bits, or "qubits," in 2016, according to a report sent by Pan's team to Global Times on Tuesday.
Quantum entanglement is a weird phenomenon which Einstein called "spooky action at a distance" where quantum particles are connected "even if they are at opposite ends of the universe," an Australia-based Cosmos Magazine reported.
   The preparation and manipulation of multiple qubit in entangled states are "core indicators for the development of quantum computing," which could be used to process information exponentially faster than conventional computing, Wang Xilin, a member of Pan's team told Global Times on Tuesday.
 "The speed of quantum computing grows exponentially as the number of qubits in an entangled state increases … the achievement of an 18-qubit entanglement this time has set the world record for largest entanglement state in all physical systems," Wang said.
For the next step, the team will attempt to demonstrate the abilities of quantum computing devices to solve problems that classical computers cannot, an experiment called "the quantum supremacy experiment" in international academia, said Wang.
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  https://sputniknews.com/asia/201807051066051574-china-physicists-quantum-dawn-supercomputer/

Yehudim wrote:quantum computing

Teška egzotika. Ne samo u ovom trenutku nego vjerojatno još jako dugo vremena, a postavlja se i pitanje jesu li kvantna računala uopće moguća u praksi u smislu neke ozbiljnije uporabe, a ne samo na teorijskoj i razini trivijalnih modela koji više podsjećaju na igračke za malu djecu.
No, vlade i njihove obavještajne službe ih zbog njihove barem u teoriji enormne brzine smatraju vrlo zanimljivima u smislu kriptoanalize i na taj način ulažu novce u istraživanja koja bi ih u konačnici barem po teoriji mogla dovesti do stanja neke ozbiljnije prednosti pred konkurentskim državama i njihovim obavještajnim službama, a da realno nemaju niti jedan jedini ozbiljan pokazatelj da će ta ulaganja u konačnici isplatiti.