Overview

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import numpy as np
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from stanza.routines import routine
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@routine
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def sweep_barrier(ctx, gate, v_start, v_stop, n_points, contact="DRAIN"):
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    """Sweep a barrier gate and measure current."""
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    device = ctx.resources.device
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    voltages = np.linspace(v_start, v_stop, n_points)
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    v_data, i_data = device.sweep_1d(gate, voltages.tolist(), contact)
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    return {"voltages": v_data, "currents": i_data}

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from stanza.routines import RoutineRunner
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from stanza.models import DeviceConfig
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# Load configuration
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config = DeviceConfig.from_yaml("device.yaml")
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# Create runner - automatically loads routine parameters from config
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runner = RoutineRunner(configs=[config])
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# Execute with config parameters
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result = runner.run("sweep_barrier")
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# Or override specific parameters at runtime
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result = runner.run("sweep_barrier", gate="G2", n_points=50)

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# Jump to voltages
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device.jump({"G1": -1.5, "G2": -0.8})
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# Measure current
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current = device.measure("DRAIN")
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# Check current voltage
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voltage = device.check("G1")
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# Sweep operations
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v_data, i_data = device.sweep_1d("G1", voltages, "DRAIN")
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v_data, i_data = device.sweep_2d("G1", v1, "G2", v2, "DRAIN")

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@routine
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def my_routine(ctx, session=None):
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    device = ctx.resources.device
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    # Sweeps are automatically logged if session is provided
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    v, i = device.sweep_1d("G1", voltages, "DRAIN", session=session)
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    # Manual logging also available
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    if session:
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        session.log_measurement("gate_voltages", {"G1": v, "currents": i})
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    return {"voltages": v, "currents": i}

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@routine
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def sweep_gate(ctx, gate):
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    device = ctx.resources.device
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    voltages = np.linspace(-2, 0, 100)
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    v_data, i_data = device.sweep_1d(gate, voltages.tolist(), "DRAIN")
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    return {"voltages": v_data, "currents": i_data}
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@routine
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def analyze_sweep(ctx):
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    # Get results from previous routine
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    data = ctx.results.get("sweep_gate")
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    currents = np.array(data["currents"])
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    return {
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        "max_current": float(np.max(np.abs(currents))),
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        "mean_current": float(np.mean(np.abs(currents)))
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    }

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runner.run_all(parent_routine="full_characterization")