Usage of the backend#
Configuring the backend is done by specifying a Python dictionary (or loading it from a JSON file) that describes your experimental setup. An example of such a hardware configuration is shown below.
Two variants of the same hardware configuration are shown:
The current old-style unvalidated json/dict hardware configuration (see Cluster).
The new
HardwareCompilationConfigvariant that adds validation of the contents and divides into"hardware_description","hardware_options"and"connectivity"(see Cluster (HardwareCompilationConfig), and the Hardware compilation configuration section of the User guide).
Example hardware configuration
{
"backend": "quantify_scheduler.backends.qblox_backend.hardware_compile",
"latency_corrections": {
"q4:mw-q4.01": 8e-09,
"q5:mw-q5.01": 4e-09
},
"distortion_corrections": {
"q0:fl-cl0.baseband": {
"filter_func": "scipy.signal.lfilter",
"input_var_name": "x",
"kwargs": {
"b": [
0,
0.25,
0.5
],
"a": [
1
]
},
"clipping_values": [
-2.5,
2.5
],
"sampling_rate": 1000000000.0
}
},
"cluster0": {
"ref": "internal",
"instrument_type": "Cluster",
"sequence_to_file": false,
"cluster0_module1": {
"instrument_type": "QCM",
"sequence_to_file": false,
"complex_output_0": {
"lo_name": "lo0",
"dc_mixer_offset_I": 0.0,
"dc_mixer_offset_Q": 0.0,
"downconverter_freq": null,
"marker_debug_mode_enable": true,
"mix_lo": true,
"portclock_configs": [
{
"port": "q4:mw",
"clock": "q4.01",
"interm_freq": 200000000.0,
"mixer_amp_ratio": 0.9999,
"mixer_phase_error_deg": -4.2
}
]
}
},
"cluster0_module2": {
"instrument_type": "QCM_RF",
"sequence_to_file": false,
"complex_output_0": {
"lo_freq": null,
"output_att": 4,
"portclock_configs": [
{
"port": "q0:mw",
"clock": "q0.01",
"interm_freq": 50000000.0
},
{
"port": "q5:mw",
"clock": "q5.01",
"interm_freq": 50000000.0
}
]
},
"complex_output_1": {
"lo_freq": 5000000000.0,
"output_att": 6,
"portclock_configs": [
{
"port": "q6:mw",
"clock": "q6.01",
"interm_freq": null
}
]
},
"digital_output_0": {
"portclock_configs": [
{
"port": "q0:switch",
"clock": "digital"
}
]
}
},
"cluster0_module3": {
"instrument_type": "QRM",
"sequence_to_file": false,
"complex_output_0": {
"lo_name": "lo1",
"dc_mixer_offset_I": -0.054,
"dc_mixer_offset_Q": -0.034,
"input_gain_I": 2,
"input_gain_Q": 3,
"portclock_configs": [
{
"mixer_amp_ratio": 0.9997,
"mixer_phase_error_deg": -4.0,
"port": "q4:res",
"clock": "q4.ro",
"interm_freq": null
}
]
},
"complex_input_0": {
"portclock_configs": [
{
"port": "qe0:optical_readout",
"clock": "qe0.ge0",
"ttl_acq_threshold": 0.5,
"init_gain_awg_path_I": 1.0,
"init_gain_awg_path_Q": 1.0,
"init_offset_awg_path_I": 0.0,
"init_offset_awg_path_Q": 0.0,
"qasm_hook_func": null
}
]
}
},
"cluster0_module4": {
"instrument_type": "QRM_RF",
"sequence_to_file": false,
"complex_input_0": {
"lo_freq": null,
"input_att": 10,
"portclock_configs": [
{
"port": "q5:res",
"clock": "q5.ro",
"interm_freq": 50000000.0
}
]
},
"complex_output_0": {
"lo_freq": 7800000000.0,
"output_att": 12,
"input_att": 4,
"portclock_configs": [
{
"port": "q0:res",
"clock": "q0.ro",
"interm_freq": null
}
]
}
},
"cluster0_module7": {
"instrument_type": "QCM",
"sequence_to_file": false,
"real_output_0": {
"lo_name": "lo_real",
"portclock_configs": [
{
"port": "q7:mw",
"clock": "q7.01",
"interm_freq": null
}
]
}
},
"cluster0_module10": {
"instrument_type": "QCM",
"sequence_to_file": false,
"real_output_0": {
"portclock_configs": [
{
"port": "q0:fl",
"clock": "cl0.baseband"
}
]
},
"real_output_1": {
"portclock_configs": [
{
"port": "q1:fl",
"clock": "cl0.baseband"
}
]
},
"real_output_2": {
"portclock_configs": [
{
"port": "q2:fl",
"clock": "cl0.baseband"
}
]
},
"real_output_3": {
"portclock_configs": [
{
"port": "q3:fl",
"clock": "cl0.baseband"
}
]
}
},
"cluster0_module12": {
"instrument_type": "QCM",
"sequence_to_file": false,
"real_output_0": {
"portclock_configs": [
{
"port": "q4:fl",
"clock": "cl0.baseband"
}
]
}
}
},
"lo0": {
"instrument_type": "LocalOscillator",
"frequency": null,
"power": 1
},
"lo1": {
"instrument_type": "LocalOscillator",
"frequency": 7200000000.0,
"power": 1
},
"lo_real": {
"instrument_type": "LocalOscillator",
"frequency": 5000000000.0,
"power": 1
}
}
Example hardware configuration (HardwareCompilationConfig)
{
"config_type": "quantify_scheduler.backends.qblox_backend.QbloxHardwareCompilationConfig",
"hardware_description": {
"cluster0": {
"instrument_type": "Cluster",
"ref": "internal",
"modules": {
"1": {
"instrument_type": "QCM",
"complex_output_0": {
"marker_debug_mode_enable": true
}
},
"2": {
"instrument_type": "QCM_RF",
"digital_output_0": {}
},
"3": {
"instrument_type": "QRM"
},
"4": {
"instrument_type": "QRM_RF"
},
"7": {
"instrument_type": "QCM"
},
"10": {
"instrument_type": "QCM"
},
"12": {
"instrument_type": "QCM"
}
}
},
"lo0": {
"instrument_type": "LocalOscillator",
"power": 1
},
"lo1": {
"instrument_type": "LocalOscillator",
"power": 1
},
"lo_real": {
"instrument_type": "LocalOscillator",
"power": 1
},
"iq_mixer_lo0": {
"instrument_type": "IQMixer"
},
"iq_mixer_lo1": {
"instrument_type": "IQMixer"
},
"iq_mixer_lo_real": {
"instrument_type": "IQMixer"
}
},
"hardware_options": {
"latency_corrections": {
"q4:mw-q4.01": 8e-09,
"q5:mw-q5.01": 4e-09
},
"distortion_corrections": {
"q0:fl-cl0.baseband": {
"filter_func": "scipy.signal.lfilter",
"input_var_name": "x",
"kwargs": {
"b": [
0,
0.25,
0.5
],
"a": [
1
]
},
"clipping_values": [
-2.5,
2.5
]
}
},
"modulation_frequencies": {
"q0:res-q0.ro": {
"interm_freq": null,
"lo_freq": 7800000000.0
},
"q0:mw-q0.01": {
"interm_freq": 50000000.0,
"lo_freq": null
},
"q4:mw-q4.01": {
"interm_freq": 200000000.0,
"lo_freq": null
},
"q4:res-q4.ro": {
"interm_freq": null,
"lo_freq": 7200000000.0
},
"q5:mw-q5.01": {
"interm_freq": 50000000.0,
"lo_freq": null
},
"q5:res-q5.ro": {
"interm_freq": 50000000.0
},
"q6:mw-q6.01": {
"lo_freq": 5000000000.0
},
"q7:mw-q7.01": {
"lo_freq": 5000000000.0
}
},
"mixer_corrections": {
"q4:mw-q4.01": {
"amp_ratio": 0.9999,
"phase_error": -4.2
},
"q4:res-q4.ro": {
"dc_offset_i": -0.054,
"dc_offset_q": -0.034,
"amp_ratio": 0.9997,
"phase_error": -4.0
}
},
"output_att": {
"q0:mw-q0.01": 4,
"q0:res-q0.ro": 12,
"q5:mw-q5.01": 4,
"q6:mw-q6.01": 6
},
"input_gain": {
"q4:res-q4.ro": {
"gain_I": 2,
"gain_Q": 3
}
},
"input_att": {
"q0:res-q0.ro": 4,
"q5:res-q5.ro": 10
},
"sequencer_options": {
"qe0:optical_readout-qe0.ge0": {
"ttl_acq_threshold": 0.5
}
}
},
"connectivity": {
"graph": [
[
"cluster0.module1.complex_output_0",
"iq_mixer_lo0.if"
],
[
"lo0.output",
"iq_mixer_lo0.lo"
],
[
"iq_mixer_lo0.rf",
"q4:mw"
],
[
"cluster0.module2.complex_output_0",
[
"q0:mw",
"q5:mw"
]
],
[
"cluster0.module2.complex_output_1",
"q6:mw"
],
[
"cluster0.module2.digital_output_0",
"q0:switch"
],
[
"cluster0.module3.complex_output_0",
"iq_mixer_lo1.if"
],
[
"lo1.output",
"iq_mixer_lo1.lo"
],
[
"iq_mixer_lo1.rf",
"q4:res"
],
[
"cluster0.module3.complex_input_0",
"qe0:optical_readout"
],
[
"cluster0.module4.complex_input_0",
"q5:res"
],
[
"cluster0.module4.complex_output_0",
"q0:res"
],
[
"cluster0.module7.real_output_0",
"iq_mixer_lo_real.if"
],
[
"lo_real.output",
"iq_mixer_lo_real.lo"
],
[
"iq_mixer_lo_real.rf",
"q7:mw"
],
[
"cluster0.module10.real_output_0",
"q0:fl"
],
[
"cluster0.module10.real_output_1",
"q1:fl"
],
[
"cluster0.module10.real_output_2",
"q2:fl"
],
[
"cluster0.module10.real_output_3",
"q3:fl"
],
[
"cluster0.module12.real_output_0",
"q4:fl"
]
]
}
}