Stim File Archive • Essential & Real

  "schema_version": "2.1",
  "protocol_name": "Deep_Sleep_0.5Hz_tDCS",
  "author": "anon_user_789 (shared with consent)",
  "stim_type": "tDCS",
  "parameters": 
    "current_mA": 1.5,
    "duration_seconds": 1200,
    "ramp_up_seconds": 30,
    "waveform": "DC",
    "pulse_width_us": null
  ,
  "montage": 
    "anode": "Fp1 (international 10-20)",
    "cathode": "Cz",
    "electrode_size_cm2": 25
  ,
  "clinical_tags": ["sleep_induction", "delta_enhancement", "low_excitability"],
  "contraindications": ["history_of_seizure", "pregnancy_unknown"],
  "community_metadata": 
    "uses": 87,
    "avg_rating": 4.2,
    "top_review": "Helps me fall asleep 20 min faster"

The Stim file format represents a necessary evolution in quantum software tooling. By treating the quantum circuit, the noise model, and the error detection logic as a single cohesive archive, it streamlines the workflow for Quantum Error Correction research. Its efficient syntax allows for the simulation of millions of rounds of error correction, providing the data volume necessary to estimate logical error rates at the $10^-6$ threshold and beyond.

Each .stim file contains three top-level sections:

  "metadata": 
    "stimulus_id": "SFA-2024-001",
    "name": "50ms tone pip at 4 kHz",
    "author": "",
    "date": "YYYY-MM-DD",
    "literature_ref": "DOI:10.1016/..."
  ,
  "waveform_parameters": 
    "type": "tone_pip",
    "carrier_frequency_hz": 4000,
    "duration_ms": 50,
    "rise_fall_ms": 5,
    "amplitude_µV": 1000,
    "sampling_rate_hz": 100000
  ,
  "sequence_parameters": 
    "presentations": 100,
    "isi_ms": 500,
    "jitter_ms": "min": 0, "max": 50,
    "randomize": true

A search engine built on the archive allows queries like:
“Find all stimuli with carrier between 2–8 kHz, ramp > 4 ms, used in mouse inferior colliculus.” – results in 12 stimuli in < 0.5 s. stim file archive

If you are a developer debugging a classic platform, you will generate dozens of Stim file iterations. Without versioning, you’ll drown in files named debug_final_v3_REAL.stim. A structured archive integrates with Git or a similar VCS, tagging each variant by timestamp, author, and purpose.

Do not archive in place. Copy every .stim file from fragmented hard drives, old SD cards, or research lab servers to a single "staging" directory. Use a tool like dd (Unix) or FTK Imager (Windows) to capture the files without modifying their timestamps or metadata. "schema_version": "2

To illustrate the life-saving power of a proper archive, consider a real-world example from 2023. A digital forensics team was asked to recover source code from a 1992 industrial CNC machine. The only available artifact was a single crash.stim file on a corrupted floppy disk.

Because the team had previously built an internal stim file archive for legacy systems, they cross-referenced the file’s hash against their database. The archive revealed: The Stim file format represents a necessary evolution

Using the archive’s preserved dependencies, the team booted the emulated CNC controller, loaded the Stim file, and successfully dumped the original machine code. Without the stim file archive, the crash.stim would have been a useless binary relic.