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Room-Temperature Quantum Computing: The RFT 2.0 Coherence Architecture

Svancara, Clinton

Published Nov 12, 2025• 0 citations
Publisher

Abstract

Quantum computing is not inherently fragile. It is phase-preserving coherence. RFT 2.0 defines qubits as coherence domains with stable phase and shows that quantum computation corresponds to phase rotation at , not superposition requiring cryogenic isolation. Coherence-locking materials and Rc-stable feedback circuits allow quantum computation at room temperature with no error correction overhead. If a system operating at still exhibits decoherence or requires cryogenic stabilization, this model is falsified.

DOI
10.5281/zenodo.17585970

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Quantum computing is not inherently fragile. It is phase-preserving coherence. RFT 2.0 defines qubits as coherence domains with stable phase and shows that quantum computation corresponds to phase rotation at , not superposition requiring cryogenic isolation. Coherence-locking materials and Rc-stable feedback circuits allow quantum computation at room temperature with no error correction overhead. If a system operating at still exhibits decoherence or requires cryogenic stabilization, this model is falsified.
Quantum Phase Machines argues that the central obstacle to scalable quantum computing is not noise, materials, or fabrication — but the unit of information itself.After two decades of engineering progress, superconducting quantum processors still rely on fragile single-particle quantum states protected by massive error-correction overheads. This book proposes a different approach: encode information in the collective phase of macroscopic superconducting domains rather than in individual qubits. By exploiting the intrinsic rigidity of phase-locked Cooper pair ensembles, it suggests that error suppression can be achieved natively at the hardware level, without the exponential overhead of quantum error-correcting codes.The argument is developed in four parts. Part I reframes the decoherence problem in engineering terms and introduces the dynamic impedance principle underlying collective robustness. Part II proposes a physical model of structured photons and electrons that reinterprets superconductivity, entanglement, and coherence as geometric properties of extended electromagnetic systems. Part III defines the Temporal Bit (T-bit) architecture and its gate operations using existing Josephson-junction technology. Part IV presents an experimental roadmap with falsifiable predictions and concrete device proposals.Written for physicists and engineers fluent in Maxwell’s equations and solid-state physics, Quantum Phase Machines offers a radical but testable alternative to orthodox quantum computing architectures. Whether ultimately confirmed or refuted, its central claim is precise: scalable quantum computation will require exploiting collective physical structure, not merely protecting fragile quantum states.
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A fault tolerant scalable quantum computer requires more than 1000 Qubits to perform real time state correction and to improve the Qubit coherence time. The dense wiring connections required between the quantum processor placed at a 100 mK temperature and the room temperature control and readout electronics serve as a limiting factor in this system. Qubit control and readout electronics operating at 4 K temperature, placed closer to a quantum processor inside the dilution refrigerator avoids the dense wiring connections to room temperature electronics, and hence, serve as a potential solution to realize a scalable quantum computer. However, with no CMOS process technology models available at cryogenic temperatures, the design of a fully integrated, ultra-low power Qubit control and readout electronics at a sub-1 mW power consumption proves to be extremely challenging. In recent years, there has been a huge rise in interest among the research communities to understand and solve the device and circuit level challenges at deep cryogenic temperatures. This paper presents an overview of the recently published active and passive device nonidealities, circuit design challenges and solutions, and the future research directions in the Qubit control and readout electronics operating at deep cryogenic temperatures.