Table 2 IBM quantum devices used in our experiments. “Date” indicates the time that we execute our codes, which can be found on Github [22]. All other column including the lifetime \(T_{1}\), decoherence time \(T_{2}\), gate errors, readout errors are recorded at the time of the experiments. Their values are averaged over all 5 qubits. Connectivity denote the layout of the chip. Most of them are designed as T shape, which mean the center qubit connects to three other qubits
From: Experimenting quantum phenomena on NISQ computers using high level quantum programming
Name | Date mm/yy | \(T_{1}\) (μs) | \(T_{2}\) (μs) | CNOT error (%) | Readout error (%) | Connectivity |
|---|---|---|---|---|---|---|
Burlington | 08/20 | 84.88 | 67.36 | 1.50 | 4.64 | T |
Essex | 08/20 | 104.31 | 123.7 | 1.76 | 3.59 | T |
London | 08/20 | 61.45 | 62.74 | 1.75 | 4.40 | T |
Ourense | 08/20 | 93.15 | 66.43 | 0.92 | 2.96 | T |
Valencia (Fig. 2) | 08/20 | 84.18 | 62.78 | 1.11 | 2.32 | T |
Valencia (Fig. 3) | 09/20 | 100.00 | 80.49 | 1.10 | 2.52 | T |
08/20 | 73.28 | 50.73 | 1.07 | 1.66 | T | |
Vigo (Fig. 4) | 09/20 | 107.64 | 74.04 | 0.94 | 1.96 | T |
x2 | 08/20 | 57.08 | 45.40 | 1.82 | 3.18 | \(\raisebox{6pt}{\rotatebox{180}{\tiny${\vartriangle}$}}\hspace{-4.55pt}\raisebox{-0.5pt}{\tiny${\vartriangle}$}\) |