I am interested in the state of the art gate speeds and decoherence times for the qubit types I know are being pursued by companies presently:
- superconducting qubits,
- ion trap qubits,
- photonic qubits.
Where can I find these, and is there a place where these are updated regularly?
There have been various published tables depicting these times for various types of qubits over the years (including the famous Los Alamos National Lab QC Roadmap), but the numbers always change while the published papers don't.
I needed these numbers to answer this question because I wanted to compare the 1ps decoherence time in the FMO to state-of-the-art decoherence times and gate times in popular candidates for QCs, so I went searching for some reasonable values for roughly this time period, but I don't anymore know where to look.
The longest coherence time ever measured was given in this answer, but no gate times were given: What is the longest time a qubit has survived with 0.9999 fidelity?
James Wootton talked about the advantages and disadvantages of the above three qubit types, but not the gate/decoherence times, in this answer: What is the leading edge technology for creating a quantum computer with the fewest errors?