U.S. physicist ever to meet a single qubit quantum information processing the lowest error rate for the first time on the requirements of the theory of quantum computers. Generally assumed that in quantum computers, each logical operation 10,000 times an error, even relatively low, the computer enough to clear the error correction protocol is correct.
The latest experiment, the United States National Institute of Standards and Technology (NIST) scientists have received the error rate is: per 50000 logical operation in an error. This shows that the people to effectively manage the individual qubit operation.
The scientists used a single beryllium ion qubits to a simple quantum computer logic operations, but improved the previous method - often in the microwave instead of a laser beam is used, which by the laser beam spot, since the beginning of instability and ion energy emission to the ion mode error has caused, in turn, brought in a copper-ion trap vacuum chamber, and the use of helium-bath to cool to 4.2 is caused Calvin (about minus 269 ℃), laboratory errors due to fluctuations in the magnetic field.
Finally, the researchers randomly selected by computer software from the 1000 different logical sequence of operations to perform a test. The test result? Almost perfectly comparable with the theoretical results.
No comments:
Post a Comment