![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
Quest for Quantum Computers Heats Up
Dec. 5th, 2014 12:40 pmСтатья для меня оказалась очень интересной, кое-что прояснилось, кое-что новое есть.
(http://www.scientificamerican.com/article/quest-for-quantum-computers-heats-up/)
"In 1997, physicist Alexei Kitaev of the California Institute of Technology in Pasadena proposed a more radical approach: make qubits out of anyons, which are states of matter that arise from the collective properties of many particles, yet behave as just one particle. Some anyons have another special property: their quantum state reveals a history of their recent interactions. If these anyons were used as qubits, Kitaev argued, the order of their interactions could encode information. And because this encoding is effectively spread throughout the system, the qubits would have a natural protection against errors arising in any individual part.
Known as 'topological qubits', these entities remain theoretical, but the idea shows enough promise that Microsoft and a number of other companies are investing in efforts to create them in the laboratory."
"it is impossible to copy a qubit without destroying its quantum state. But qubits can be compared, so theorists have tried to devise correction schemes that ask various pairs of qubits whether they have the same or different values, and then use the answers to deduce whether individual qubits have gone wrong."
(http://www.scientificamerican.com/article/quest-for-quantum-computers-heats-up/)
"In 1997, physicist Alexei Kitaev of the California Institute of Technology in Pasadena proposed a more radical approach: make qubits out of anyons, which are states of matter that arise from the collective properties of many particles, yet behave as just one particle. Some anyons have another special property: their quantum state reveals a history of their recent interactions. If these anyons were used as qubits, Kitaev argued, the order of their interactions could encode information. And because this encoding is effectively spread throughout the system, the qubits would have a natural protection against errors arising in any individual part.
Known as 'topological qubits', these entities remain theoretical, but the idea shows enough promise that Microsoft and a number of other companies are investing in efforts to create them in the laboratory."
"it is impossible to copy a qubit without destroying its quantum state. But qubits can be compared, so theorists have tried to devise correction schemes that ask various pairs of qubits whether they have the same or different values, and then use the answers to deduce whether individual qubits have gone wrong."
