Cubit lasted 39 minutes at room temperature
Quantum computer has become a little closer to reality after the experiment of physicists from the University of Simon Fraser (Canada). They were able to maintain the state of the qubit at room temperature for 39 minutes. This is a significant achievement, given that the previous world record was 25 seconds.
For this experiment, qubits were obtained from phosphorus atoms embedded in a very pure silicon crystal (in the photo) by bombarding them with magnetic pulses in order to induce quantum superposition.
Qubit is a key component of a quantum computer. Due to the unique property of qubits, quantum superposition, the computing power of quantum computers in some problems will be exponentially higher than that of binary ones.
')
The inability to work with qubits in normal conditions was one of the main obstacles to the practical development of quantum computers. More than half an hour at room temperature is more than anyone could have imagined, and quite enough for some practical tasks. True, for the generation of qubits and for reading information from them while in the aforementioned experiment, cooling was still carried out to about absolute zero. One of the authors of the experiment, Stephanie Simmons of the University of Oxford, says that it is theoretically possible to read and write at room temperature too: “This is an engineering rather than a scientific problem,” she said.
Installation scheme for recording and reading qubits of phosphorus atoms in a silicon crystal
To increase the reliability of reading information from phosphorus atoms, about 10 billion identical qubits were created. Scientists have yet to find a way to read individual distinct qubits in such a physical container.
With the availability of reliable quantum teleportation technologies for qubits, it is possible to design quantum computers on silicon chips. Now there is a hope that someday they will work at room temperature.
Although quantum computers exist so far only in theory, a high-level programming language has already been created for them, so now you can design software simulators for quantum computers and write software.
The results of the experiment at Simon Fraser University are published in the journal Science ( original article , free viewing ).
For this experiment, qubits were obtained from phosphorus atoms embedded in a very pure silicon crystal (in the photo) by bombarding them with magnetic pulses in order to induce quantum superposition.
Qubit is a key component of a quantum computer. Due to the unique property of qubits, quantum superposition, the computing power of quantum computers in some problems will be exponentially higher than that of binary ones.')
The inability to work with qubits in normal conditions was one of the main obstacles to the practical development of quantum computers. More than half an hour at room temperature is more than anyone could have imagined, and quite enough for some practical tasks. True, for the generation of qubits and for reading information from them while in the aforementioned experiment, cooling was still carried out to about absolute zero. One of the authors of the experiment, Stephanie Simmons of the University of Oxford, says that it is theoretically possible to read and write at room temperature too: “This is an engineering rather than a scientific problem,” she said.
Installation scheme for recording and reading qubits of phosphorus atoms in a silicon crystal
To increase the reliability of reading information from phosphorus atoms, about 10 billion identical qubits were created. Scientists have yet to find a way to read individual distinct qubits in such a physical container.
With the availability of reliable quantum teleportation technologies for qubits, it is possible to design quantum computers on silicon chips. Now there is a hope that someday they will work at room temperature.
Although quantum computers exist so far only in theory, a high-level programming language has already been created for them, so now you can design software simulators for quantum computers and write software.
The results of the experiment at Simon Fraser University are published in the journal Science ( original article , free viewing ).
Source: https://habr.com/ru/post/202372/
All Articles