Cross Resonance calibration - #1414

Merged

lballerio merged 87 commits into

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cancellation_pulse

Jun 22, 2026

Commits on Jun 22, 2026

feat: CR gate draft (tested on emulator)

andrea-pasquale
authored and
lballerio
committed
9c9f58c
refactor: Rename cross-resonance protocol

andrea-pasquale
authored and
lballerio
committed
f13b8a7
feat: Add two-qubit platforms with fixed frequency

andrea-pasquale
authored and
lballerio
committed
22ca463
feat: Add cross-resonance amplitude protocol

andrea-pasquale
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lballerio
committed
9705dc6
feat: Adding cosinusoid fit to CR amp and duration

andrea-pasquale
authored and
lballerio
committed
d2e923e
fix: Remove None two-qubit natives from compiler

andrea-pasquale
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lballerio
committed
4a91ee1
refactor: Define CR pulse without CNOT native

andrea-pasquale
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lballerio
committed
75409bd
refactor: Remove sequence code duplication

andrea-pasquale
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lballerio
committed
ff3cb33
refactor: Start using drive_extra

andrea-pasquale
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lballerio
committed
c7320c4
chore: Update qutrits platform

andrea-pasquale
authored and
lballerio
committed
4c772ed
feat: Compute effective coupling Jeff

andrea-pasquale
authored and
lballerio
committed
2e861f7
feat: Adding echoCR and use parameters from IBM chip

andrea-pasquale
authored and
lballerio
committed
962b6fa
chore: Minor corrections

andrea-pasquale
authored and
lballerio
committed
f126309
fix: Adjust delays

andrea-pasquale
authored and
lballerio
committed
0526a8d
feat: Adding hamiltonian_tomography_cr (no fitting)

andrea-pasquale
authored and
lballerio
committed
7359c60
refactor: Adding tomographies protocols

andrea-pasquale
authored and
lballerio
committed
be8af10
feat: Adding preliminary fit to tomographies

andrea-pasquale
authored and
lballerio
committed
88b2a9c
refactor: Reduce code duplication for CR tomographies

andrea-pasquale
authored and
lballerio
committed
b50752c
refactor: Reduce code duplication for CR protocols

andrea-pasquale
authored and
lballerio
committed
b9d3b4b
feat: Proper fit for <Z>

andrea-pasquale
authored and
lballerio
committed
cc7434f
feat: Implementing correct fitting procedure

andrea-pasquale
authored and
lballerio
committed
8d039d0
feat: Minor fixes and adding calculation of Hamiltonian coefficients

andrea-pasquale
authored and
lballerio
committed
49f82a5
feat: Adding phase and compensation pulse as parameters

andrea-pasquale
authored and
lballerio
committed
ec88c6e
feat: Initial calibration for CNOT

andrea-pasquale
authored and
lballerio
committed
01ec777
refactor: Document and simplify tomographies

andrea-pasquale
authored and
lballerio
committed
e54b0d7
refactor: Document code and add tests

andrea-pasquale
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lballerio
committed
f9fc0db
test: Improve coverage

andrea-pasquale
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lballerio
committed
94756fb
doc: Documentation for CR experiments

andrea-pasquale
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lballerio
committed
5e5304e
doc: Documentation on Hamiltonian Tomography CR protocols

andrea-pasquale
authored and
lballerio
committed
2250a5a
fix: Skip fitting plot if fit fails

andrea-pasquale
authored and
lballerio
committed
ee7c5b2
fix: Add missing image in doc

andrea-pasquale
authored and
lballerio
committed
d0dadd8
fix: Fix issue with pair order

andrea-pasquale
authored and
lballerio
committed
4bb0efe
fix: Remove amplitude sweep on target

andrea-pasquale
authored and
lballerio
committed
b1a4c2f
remove VirtualZ in basis changes

Luca-Ben-Herrmann
authored and
lballerio
committed
f64f777
new version for emulators parameters.json
lballerio
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efa8d60
modifying cr_gate length for working also on qw21q-b chip
lballerio
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a688eca
adding bloch vector plot R
lballerio
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267bb35
correcting convention for CR drive channel name so the emulator can actually see it.
lballerio
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04f2726
make platform compatible with parameter.json
lballerio
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f42d5d8
modified hamiltonian length tomography
lballerio
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5cbb38d
adding Bloch vector evolution for hamiltonian tomography and adding target cancellation pulse calibration
lballerio
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a2f69cb
added phase and amplitude sweep for hamiltonian tomography
lballerio
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4644432
updated full cancellation pulse calibration
lballerio
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f07d7a7
modified hamiltonian tomography to retrieve simulation results
lballerio
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42f4a4a
minor fix for plotting
lballerio
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779613a
minor fix for debugging
lballerio
committed
f10cdea
improving concatenated fitting for hamiltonian tomography
lballerio
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d3a4681
plot fixes for hamiltonian tomography
lballerio
committed
08d5ab8
plot fixes for hamiltonian tomography
lballerio
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d539b61
adding dynamical_evolution_optimizer
lballerio
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50e7e18
fixing hamiltonian tomography length protocol, it also estimates CR length by numerically minimize the Bloch vector |B|.
lballerio
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8a261e4
first version of cr gate, both simple and echo, no cancellation pulse - tested only with emulator
lballerio
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49dfc1e
validated CR and cancellation phase calibration using fixed-frequency-qutrits qibolab emulator. Finally first implementation of cancellation amplitude tuning.
lballerio
committed
0081b6d
modified plotting function for amplitude and phase calibration CR gate
lballerio
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7aaf34c
rename of cancellation pulse protocol and adding hamiltonian tomography with amplitude sweeper (still work in progress thou, there might be some problems with the simulation for high amplitudes)
lballerio
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29e322c
fixing numerical_root_finder in hamiltonian_tomography utils.py - now it takes the minimum root (in general the result is a non sorted list)
lballerio
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e957e50
adding experiment for measuring crosstalk between to connected qubits - designed for fixed frequency qubits
lballerio
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69bd81c
fix amplitude cross rabi oscillation
lballerio
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e7ab45a
changing averaving and acquisition mode for Hamiltonian Tomography experiments and running on the simulator
lballerio
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6a15c7a
change of names in utils for target readout channel and pulse
lballerio
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7da462f
debuggin CR protocols for cancellation amplitude calibration
lballerio
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7734ed0
fixing bugs and handling corner cases in quinn-fernandes algorithm + remove log in tomography_length.
lballerio
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8bf67f8
validated version for CR sequence, phase cal - only ampl cal missing...works with new qibolab emulator
lballerio
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3000951
modifying control amplitude calibration protocol plus final version of cancellation amplitude calibration protocol
lballerio
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e0a7315
applying suggested fixes and adding _update function for control CR amplitude calibration
lballerio
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d1ff300
fixig bugs and type checking for rabi and ramsey (maybe after rebasing) - succeeding tests plus refactoring of parameters extraction
lballerio
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47b9200
modifications
lballerio
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d9c8bdf
refactoring cross resonance sequence for time-sweeping experiments - still to be tested
lballerio
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6b09875
removing old versions of cross resonance calibration and reordering folder.
lballerio
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68e1b27
bug fixing in cancellation_amplitude.py calibratyion script
lballerio
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b687c08
removing unused functions
lballerio
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b620653
fixing bug in tomography_cr_plot function
lballerio
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56afddd
making unique delays UUID for CR sequence
lballerio
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7a42318
now we compute <Z> on control qubit and no more probability (which was inconsistent)
lballerio
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182de6d
fixing CNOT sequence update
lballerio
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1281720
computing sampling rate inside quinn-fernandes algorithm, removing input param
lballerio
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dbbdebe
add quinn_fernandes even for rabi and ramsey parameters guess
lballerio
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f4ed748
applying fixes from PR review
lballerio
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c6d568d
normalizing Bloch vector and fixing duration swept experiments.
lballerio
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f7a27e1
fixing bug in cr_amplitude
lballerio
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07d950a
removing duplicated class and inserted input check in hamiltonian tomography duration
lballerio
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0ed63a9
refactoring cross resonance scripts
lballerio
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002f85f
update tests runcard protocols.yml
lballerio
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ba410e2
bug fixing for tests
lballerio
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620558b
renaming and splitting of ham_tomography_utils.py file
lballerio
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0c40bc6
first complete version for CR gate calibration (simple + echo + cancellation)
lballerio
committed
6c935bd
test: Use more realistic tolerances for period guessing

alecandido
authored and
lballerio
committed
6319a26