A Berkeley Lab team has demonstrated a three-qubit quantum gate that performs calculations with
Medium-scale quantum processors that deal with a lot of noise in their computations typically use custom gates with one or two qubits.
The authors of the new work have demonstrated a new robust three-qubit gate, iToffoli, for universal quantum computing. In addition, the team has demonstrated very high accuracy of operation - 98.26%.
Toffoli, or controlled-controlled-NOT (CCNOT) -It is a key logic element in classical computing because it is universal and can support all logic circuits to calculate any binary operation. It is also reversible, allowing binary inputs (bits) to be determined and recovered from the output, so no information is lost. As a result, Toffoli helps researchers run any quantum algorithm.
The researchers hope that their experimental approaches to building high-precision and simple multi-qubit gates will advance further research in the field of quantum information processing.
Read more
Gravity and dark matter do not exist: the main thing about the new work of physicists
Something strange is happening in the Universe: how to explain inconsistencies in the Hubble constant
Octopuses torture and eat themselves after mating. Scientists finally figured out why