XY-n

XY-n represnets a family of dynamical decoupling scripts (see [1]) where X and Y rotations are interchanged at equal temporal spacing. We follow the pulse sequence outlined in [2] and implement a macro which can generate a general number of integer repetitions.

def XY_n_sym(tau, n):

ind = declare(int)

wait(tau / 2, "qe1")

with for_(ind, 0, ind < n, ind + 1):

play("X", "qe1")

wait(tau, "qe1")

play("Y", "qe1")

wait(tau, "qe1")

wait(tau / 2, "qe1")

Config

The system implements one control quantum element qe1 and one readout quantum element rr

Program

We nest an averaging loop and a delay loop which goes over tau values.

with for_(n, 0, n < NAVG, n + 1):

with for_each_(tau, tau_vec):

XY_n_sym(tau, 8)

align("qe1", "rr")

measure("readout","rr",None,

demod.full("integW1", I),

demod.full("integW2", Q),

)

save(I, out_str)

with if_(I > th):

save(s1, out_str)

with else_():

save(s0, out_str)

Post processing

None

Script

download script

References

[1] Wang, Z. H., De Lange, G., Ristè, D., Hanson, R., & Dobrovitski, V. V. (2012). Comparison of dynamical decoupling protocols for a nitrogen-vacancy center in diamond. Physical Review B - Condensed Matter and Materials Physics, 85(15), 1–16. https://doi.org/10.1103/PhysRevB.85.155204[2] Ali Ahmed, M. A., Álvarez, G. A., & Suter, D. (2013). Robustness of dynamical decoupling sequences. Physical Review A - Atomic, Molecular, and Optical Physics, 87(4), 1–6. https://doi.org/10.1103/PhysRevA.87.042309