of treedom can be described by a reduced densty operator p over an elecive Hiber space spanning
relevant vibrational, electronic, and collective oscillatory modes. The computational primitives of interest
are modal amplitudes and relative phases that can be inlialzed, transformed, and measured via
extemaly applied elds. Untary-ike transformations are represented operational by controled
sequences of optical and acoustic modulation:
From an information‘heoretc vantage the primary observables are expectation values fora chosen set
of operators O that correspond to physicaly accessible quanties, such as local polarization, scared
field phase, or modal population. Fidety of preparation and evolution is defined by state overlap or trace.
norm distances; coherence times are charactorizod by decay constants analogous to T1, T2, of more
generally by spectral inewicths of response functons. For practeal purposes these quanttes should be
‘operationalized in measurement protocos that incorporate the continuous and often analog nature ofthe
substrate. Thus, the theoretical framework emphasizes representatonal primitives that are continuous
(complex amplitudes. phases) and compostiona (modal superpostions, coupled networks of coherence
‘oman.
Experimental constructs and protocols
A mnimal QWCU expermental platform comprises thee classes of engneered subsystems! the water.
based modal substrate housed within a controlled cavity (he Quantum Water Bote), an aay of actuators
that deiver programmable optical and acoustic smuh, and a sensing and feedback subsystem that
perioms state estimation and stabiizaton. The QWE design can ensure chemical purty, controled
‘dopant ditibuton, and mechanical sabi to meet spectral and modal tolerances. Malaria choices
—hghpuny sen or borcelcato glas fo the container, pezoslschie triage, immobilized mierocryais
or nanopartcies--are selected to shape local eld cstibutons and lo provide reproduce resonant
features. Temperature conta, bration itolaion, and gas or vacuum handing are essental to minimiza
ncontoied decoherence came's
Measurement pretocole ste organized. ine seven datsos: The fet cass, calbraion
and charectrizaton, produces device descipters: optical transmission and refecion specie,
interteromatr phase maps, modal coupling matices, and baseline noise satsts under standardized
stmuk The second dass, slate-preparaton and valdation, defies wie and read sequences that prepare
candidate coherent states and measure tner reproducibly and delay Vaiaton here invokes repeated
tals of Identcal pulse sequences and statistical comparison of reeutant cbservables to quantly
repeatabry The irá dass, computational benchmarking, ests sequences intended to perform prive
informatico processing asks—such as inleference-based dscriminañon, analog transform operations,
X pa classiteaton—aganst classical contol implementatons and against simulated baselines.
Troughout, each protocol should record energy consumption, timing, and environmental variable.
20 tal experimental outcomes can be contextualized win energy-aware cost model
‘Device descriptor schema and semantics.aware IR
To bridge experimental devices and softae systems, a canonical device descriptor schema is proposed.
The schema includes, at minimum, metadata fields for geometric parameters (caviy dimensions,
port geometies), spectral response vectors (resonance frequencies, C-actors), coupling coefficients
for each interface port, calibration templates for pulse shapes and acoustic dive ampltudes, estimated
‘energy-per-simuus matics, noise models (spectral density functons), and operational constraints
(maximum atowable modulaton ampltuce, thermal recovery Ime). These descriptors serve as inputs
10 a semantics aware intermediate representation (IR) used by complers and the Quantum Coherence
Control Interface. The IR treats coherence domains as typed resources wih ownership semantics,
attaches resource annotations (energy, me, fdolty priors) to each prímivo, and supports staged
Towering from highevel interference constrts to device-epecic pulse sequences.
Programming model and language semantics
A programming model for QVICU prritzes primitives that reflect the physics: declaration of coherence
‘domains, parameterized waveforms for optical and acoustic drivers, measurement constructs that produce
continuous observables or discretized readouts afer signal processing, and exp constraints fr energy
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