Quantum Computing
SpeculativeQuantum computing, viewed through Synchronism, is coherence engineering. Gates are coherence operations, speedup is coherent parallelism, and the entire enterprise of error correction is about maintaining the γ regime against environmental MRH crossings.
Gates as Coherence Operations
A quantum gate transforms the state of qubits. In Synchronism's framing, each gate is an operation that redistributes coherence across the system's phase pattern:
Hadamard Gate
Splits coherence equally between |0⟩ and |1⟩. Creates maximal superposition. In Synchronism: distributes the phase pattern across both branches with equal weight.
CNOT Gate
Creates entanglement between two qubits. In Synchronism: establishes shared γ between two subsystems, linking their Ncorr values.
Phase Gate
Rotates the phase of one branch relative to another. In Synchronism: adjusts the phase pattern without changing coherence magnitudes. Pure phase engineering.
Measurement
Extracts a classical bit. In Synchronism: forces an MRH crossing that collapses the phase pattern. Coherence concentrates into one branch.
Speedup = Coherent Parallelism
A classical computer explores one path at a time. A quantum computer maintains coherent superposition across exponentially many paths simultaneously. The “quantum advantage” is exactly the number of coherent branches that can be maintained and interfered before the system crosses the MRH.
Shor's algorithm works because it maintains coherence across all factor candidates simultaneously, then uses interference (phase pattern manipulation) to amplify the correct answer. Grover's algorithm amplifies the coherence in the marked state through repeated phase rotations.
Error Correction = Maintaining γ
Decoherence = unwanted MRH crossing.
Every qubit constantly interacts with its environment. Each interaction threatens to increase Ncorr, decrease γ, and push the system past the MRH. Quantum error correction fights this by encoding logical qubits into larger physical systems that can detect and correct small MRH encroachments before they become irreversible.
In this framing, the threshold theorem of fault-tolerant quantum computing becomes a statement about γ maintenance: if the per-gate error rate (per-gate MRH encroachment) is below a threshold, then arbitrarily long coherent computation is possible by continuously correcting the γ drift.
T2 Coherence Times
The T2 decoherence time of a qubit measures how long it maintains phase coherence. In Synchronism, this is the timescale on which environmental coupling pushes γ below the quantum regime threshold. Synchronism predicts that T2should scale with Ncorr of the environment:
- Trapped ions: Isolated from environment (low Ncorr coupling), long T2
- Superconducting qubits: Coupled to phonon bath (moderate Ncorr), shorter T2
- Photonic qubits: Minimal environmental coupling, long T2 but hard to entangle
Protocol 6 in the Quantum Predictions proposes testing whether T2 correlates with Ncorr-based predictions. Estimated cost: $5K, timeline: 6 months.