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Power on. Five parallel reads. Usable. No model-building cycle. No per-channel commissioning.
The class

Component-observable
wave hardware.

A canonical definition of the systems that can support the TrueLoop stability contract.

This is the class the contract is written for. Whether your specific device qualifies is decided by the envelope, not by this list.

TrueLoop defines the scalable stability contract for component-observable wave hardware: systems whose component responses can be read together, mapped to writable controls, and revisited before drift makes the reading stale. It also identifies the information boundary beyond which that contract cannot operate.

If your hardware exposes an actionable response per channel, it may be in the class. If the objective is only a single score over many hidden channels, it is not supported by this interface, and the envelope will say so before you spend an acquisition.

01

Quantum processors

17 classes
  • Superconducting QPUsper-qubit readout and per-channel control
  • Trapped-ion processorsper-ion fluorescence readout
  • Neutral-atom tweezer arraysper-site imaging and addressing
  • Spin-qubit arraysper-dot charge sensing
  • Donor and color-center spin registersper-site optical or electrical readout
  • Photonic quantum processorsper-mode heralds and phase taps
  • Quantum annealersper-device flux bias and coupler calibration
  • Bosonic and cat-qubit processorsper-cavity pump and drive trim
  • Topological-qubit test arraysper-junction gate and readout bias
  • Qubit readout chainsper-resonator frequency and power trim
  • Cryogenic control fan-outper-line offset
  • Josephson parametric-amplifier arraysper-amplifier pump bias
  • Traveling-wave parametric-amplifier banksper-stage pump trim
  • Microwave-optical transducer banksper-transducer detuning
  • Quantum network and repeater nodesper-link phase and per-source rate
  • Entanglement-distribution switchesper-path visibility monitor
  • QRNG entropy sourcesper-channel monitor response
02

Quantum sensing and metrology

11 classes
  • NV-center magnetometer arraysper-sensor bias and contrast
  • Atomic magnetometer gridsper-cell resonance trim
  • SQUID arraysper-loop flux offset
  • Atom-interferometer arraysper-axis fringe monitor
  • Optical lattice clocksper-site light shift and lattice depth
  • Ion and neutral-atom clock ensemblesper-clock servo offset
  • Rydberg RF sensor arraysper-cell EIT monitor
  • Kinetic-inductance detector arraysper-pixel resonator tune
  • Transition-edge sensor arraysper-pixel bias point
  • CMB telescope focal planesper-detector bias and time constant
  • Cavity search banksper-cavity tune and coupling
03

Integrated photonics

15 classes
  • Programmable photonic meshesper-interferometer monitor tap
  • Photonic AI acceleratorsper-weight monitor
  • Coherent Ising machinesper-pulse amplitude
  • Photonic reservoir processorsper-node tap
  • Optical switch fabricsper-switch extinction
  • Co-packaged opticsper-lane bias and power
  • Microring resonator banksper-ring thermal tune
  • Microcomb sourcesper-line power and detuning
  • Laser and VCSEL arraysper-emitter current and wavelength
  • Coherent fiber-laser combinersper-channel phase
  • Multi-plane light convertersper-plane phase pattern
  • Photonic lanterns and mode multiplexersper-mode coupling monitor
  • Programmable coupler latticesper-site detuning
  • On-chip quantum-light sourcesper-source rate monitor
  • Programmable photonic spectrometersper-channel intensity
04

Free-space and imaging optics

18 classes
  • Optical phased arraysper-emitter phase tap
  • Adaptive-optics systemsper-mode wavefront response
  • Astronomical extreme-AO systemsper-mode wavefront sensor
  • Free-space communication terminalsper-loop pointing response
  • Holographic and light-field displaysper-pixel phase and amplitude
  • Structured-illumination systemsper-element pattern response
  • Optical-tweezer arraysper-trap intensity and position
  • Interferometric sensor arraysper-channel quadrature
  • Distributed fiber sensingper-segment response
  • OCT imaging enginesper-channel reference trim
  • Photoacoustic imaging arraysper-element gain and delay
  • Segmented telescope primariesper-segment piston, tip, and tilt
  • Astronomical interferometer arraysper-baseline delay line
  • Gravitational-wave interferometersper-loop error signal
  • High-energy laser beamlinesper-beam pointing, timing, and energy
  • Laser-wakefield front endsper-beamline phase
  • Active X-ray opticsper-actuator mirror figure
  • Free-electron-laser chainsper-segment gap trim
05

Fiber and coherent communications

7 classes
  • Coherent transceiver front endsper-lane bias and quadrature
  • IQ-modulator banksper-channel offset and balance
  • ROADM and wavelength-selective switchesper-port attenuation and phase
  • Long-haul optical-amplifier chainsper-span gain tilt
  • Space-division multiplexed linksper-core and per-mode response
  • PON burst-mode front endsper-port threshold trim
  • Quantum-key-distribution linksper-basis visibility monitor
06

RF, microwave, and millimeter wave

23 classes
  • Phased-array antennasper-element gain and phase
  • 5G and 6G radio front endsper-chain calibration response
  • Reconfigurable intelligent surfacesper-cell phase state
  • Tunable metasurface antennasper-cell tuning response
  • Automotive imaging radar arraysper-element trim
  • AESA radar arraysper-module gain and phase
  • Synthetic-aperture radar arraysper-element calibration
  • Satellite flat-panel terminalsper-element pointing weight
  • GNSS anti-jam arraysper-element null weight
  • Wireless-power beamformersper-emitter phase
  • Radio-telescope arraysper-antenna delay and phase
  • VLBI station chainsper-station clock and phase
  • Superconducting RF cavity stringsper-cavity tune and coupling
  • Accelerator RF cavity banksper-cavity amplitude and phase
  • Klystron and SSPA banksper-source drive trim
  • Tunable RF filter banksper-filter response
  • Microwave-photonic linksper-channel bias and delay
  • THz emitter and detector arraysper-pixel bias
  • EPR and NMR channel banksper-channel pulse response
  • MRI shim-coil systemsper-coil current setpoint
  • Parallel-transmit MRI arraysper-coil amplitude and phase
  • Plasma-heating arraysper-launcher phase and power
  • Ionospheric and OTH radar arraysper-mast phase
07

Acoustic, ultrasonic, and elastic

16 classes
  • Medical-ultrasound arraysper-element delay and gain
  • HIFU therapy arraysper-element phase and amplitude
  • Sonar arraysper-hydrophone phase
  • Underwater acoustic linksper-projector weight
  • Acoustic levitation arraysper-emitter phase
  • Directional speaker arraysper-driver weight
  • Beamforming microphone arraysper-capsule gain and delay
  • Seismic source arraysper-source sweep phase
  • Seismic sensor networksper-station response
  • Ground-penetrating radar arraysper-element timing trim
  • Surface-acoustic-wave banksper-device frequency trim
  • Bulk-acoustic-wave filter banksper-resonator trim
  • MEMS resonator arraysper-resonator bias
  • Optomechanical and phononic arraysper-cavity detuning
  • Structural-health transducer networksper-patch response
  • Nondestructive-testing phased probesper-element focal-law response
08

Matter-wave and beamline systems

7 classes
  • Multibeam electron-beam toolsper-beamlet blanker and focus
  • Electron-microscope corrector stacksper-multipole excitation
  • Multi-column ion-beam toolsper-column steering
  • Accelerator magnet channelsper-magnet setpoint
  • Beam-position and corrector networksper-monitor orbit response
  • Neutron-optics arraysper-element phase and alignment
  • Cold-atom matter-wave circuitsper-site potential trim
09

Analog and neuromorphic compute

6 classes
  • Analog in-memory crossbarsper-cell conductance monitor
  • Photonic neuromorphic weight banksper-weight tap
  • Coupled-oscillator computersper-oscillator frequency and phase
  • Memristive synapse arraysper-device write-verify response
  • Analog wavefront processorsper-tap coefficient response
  • Probabilistic-bit arraysper-bit bias monitor
10

Instrumentation and stabilization

6 classes
  • Optical frequency-distribution networksper-link phase
  • Fiber time-transfer systemsper-span compensation response
  • Multichannel lock-in plantsper-loop setpoint response
  • Cavity-stabilized laser banksper-cavity offset
  • Synchrotron beamline opticsper-element pitch and gap
  • Fusion diagnostic arraysper-channel alignment trim

These are classes, not claims. Superconducting QPUs carry measured hardware evidence. Photonic, RF, acoustic, and analog families have controlled simulation evidence at the architecture level. Plausible rows match the required interface but remain untested on physical hardware. The qualification test for any system is one question: what is the component response, and how fast does it go stale?

Check your hardware