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609 papers from the QNFO program, filed on nine shelves by the reader each one is written for: energy per answer, error correction, physics, numbers and p-adics, logic and formalism, AI and knowledge, autonomous systems, assessments, and cross-cutting essays. Every page renders its mathematics and can be questioned in place. How a living paper works.
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Superconducting papers 23 papers
Superconducting. Superconducting hardware Tagged papers: 23.
Leakage as the Price of Binary Truncation: A Scaling Law for Transmon Leakage, Removal Capacity, and Its Ontological Reading
Superconducting transmon processors lose population from the computational $\{|0\rangle,|1\rangle\}$ subspace into higher levels of an anharmonic oscillator, and this leakage is normally treated as an engineering defect to be suppressed pulse by pulse. The gap addressed here is conceptual and…
Two-Level System Defects as a Random Ensemble: Counting and Dephasing Estimates for Superconducting Qubits
Parasitic two-level system (TLS) defects in the amorphous tunnel barriers of superconducting qubits are a major identified source of decoherence, yet device designers lack closed-form estimates linking defect density and junction geometry to the probability that a device is degraded and to the…
Geometric Confinement as a G-Only Baseline for Superconducting Phenomena: A Re-Entry Analysis of the QNFO Geometric Unification Framework
Engineers designing confined superconducting devices—thin-film resonators, vortex-based flux devices, and cavity-coupled qubits—routinely attribute device performance to material-specific mechanisms, yet a purely geometric contribution is rarely quantified first, so geometric and material effects…
Planck Fidelity: The Fundamental Leakage Cost of Binary Truncation of Bosonic Ladders
Superconducting transmon qubits are weakly anharmonic oscillators whose spectra form discrete but unbounded ladders of energy eigenstates; the binary register $n \in \{0,1\}$ is imposed on this ladder by truncation, not by physics. Because every physical drive contains the raising operator…
Planck Fidelity: Fundamental Leakage Cost of Binary Truncation of Bosonic Ladders
The transmon is a bosonic oscillator whose spectrum is a discrete but unbounded ladder of energy eigenstates; encoding it as a qubit, i.e. restricting the computational space to $n \in \{0,1\}$, is a radix choice rather than a physical necessity. We formalize the conjecture, originating in the QNFO…
Parity-Protected Superconducting Qubits at 4 K: A Reconciled Thermodynamic Error-Budget Analysis
Scalable superconducting quantum computing is conventionally operated at millikelvin temperatures, where the cooling power available from dilution refrigerators is severely limited. This paper tests the conjecture that a thermodynamic bottleneck at millikelvin temperatures could be relieved by…
Thermodynamic Bottlenecks on Floquet Driving of Superconducting Matter: Quasiparticle Poisoning, Heat Extraction, and Design Rules
Floquet engineering—periodic modulation of a Hamiltonian to synthesize effective dynamics—is attractive for superconducting circuits and materials, but a driven superconductor is an open system: every absorbed drive photon must be dissipated into a cryogenic bath, and above-gap absorption breaks…
Planar Bosonic Error Correction with Heavy Fluxonium: A Quantitative Reassessment of Hardware-Efficient GKP Stabilization
Bosonic quantum error correction (QEC) encodes one logical qubit into an oscillator mode, promising fault tolerance with far fewer physical components than qubit-based surface codes. Until recently, however, all superconducting demonstrations of bosonic QEC relied on centimeter-scale…
Adiabatic Superconducting Spiking Architectures: A Reconciled Energy Budget for Quantum-Inspired Neuromorphic Computing
Neuromorphic computing promises order-of-magnitude energy savings over von Neumann processors, yet CMOS spiking hardware remains bounded by capacitive switching losses and transistor leakage. We present a reconciled analysis of a hybrid architecture that replaces the CMOS neuron with a…
Braid Group Representations, Modular Data, and the Classification of Majorana Zero Mode Fusion Rules in 2D Topological Superconductors
Majorana zero modes (MZMs) localized on vortices of a two-dimensional topological superconductor carry a projective representation of the braid group, and the associated anyon theory is encoded in a modular tensor category whose fusion rules and modular data ($S$ and $T$ matrices) determine the…
Braid Group Representations, Modular Data, and the Classification of Majorana Zero Mode Fusion Rules in 2D Topological Superconductors
We investigate whether the braid group representation on $N$ anyons uniquely determines the modular data ($S$ and $T$ matrices) of a non-Abelian topological order, and whether this framework classifies all fusion rules for Majorana zero modes (MZMs) in 2D topological superconductors. We show that…
No Thing There: Control, Readout, and Self-Referential Metrology in Engineered Quantum Systems
Pedagogical bridge between qubit ontology critique and working physics. Explains what control pulses actually manipulate and what readout measures, across superconducting transmon, trapped-ion, and spin qubit platforms. Includes electrical seesaw analogy, self-referential metrology formalization,…
Superconductivity Quadrangle
The engineering of robust, decoherence-resistant topological qubits is currently impeded by a fragmented approach to material design that often treats control parameters in isolation. This study introduces and computationally validates the “Superconductivity Quadrangle,” a unified framework…
Tweezers Magnet
The dominant paradigm in advanced computing, particularly in the quantum domain, relies on the precise external control of individual, fragile information carriers—a particle-centric approach analogous to arranging iron filings with tweezers. This method is fundamentally constrained by its reliance…
ASYMMETRIC ELECTRON TRANSPORT ARISING FROM INTRINSIC STRUCTURAL CHIRALITY
A central objective in modern condensed matter physics is to establish a direct, predictive link between the microscopic quantum properties of a material’s electronic structure and its macroscopic, functional responses. Recent advances in spectroscopy have provided unprecedented insight into the…
Engineering Macroscopic Quantum Coherence in Disordered Moiré Metamaterials
The study of moiré materials is defined by a central paradox: the experimental observation of robust, macroscopic quantum phases, such as superconductivity and topological insulation, in devices known to possess significant atomistic disorder. This work bridges this “disorder-topology gap” by…
Resonant Kerr-Cancellation Dynamics
Bosonic codes encoded in superconducting cavities offer a hardware-efficient path to fault tolerance by exploiting the infinite dimensionality of a single harmonic oscillator. However, the non-linear mixing elements required for autonomous stabilization introduce parasitic self-Kerr interactions…
Thermodynamic Scaling of 4-Kelvin Topological Processors
Standard superconducting quantum processors are currently constrained by the thermodynamic bottleneck of millikelvin dilution refrigeration, which precludes the integration of high-speed control logic and limits scalability. This reliance on the 20 mK regime creates a “mainframe constraint” where…
TOPOLOGICAL HYDRODYNAMICS AND THE SPECTRAL GAP
Standard quantum field theory conceptualizes the vacuum as a probabilistic void, yet phenomenological isomorphism with superfluid Helium-3 suggests a deeper hydrodynamic ontology. While this topological substrate theoretically supports analog computation via vorticity, the practical realization is…
Twisted Cuprate Twistronics and the Thermodynamic Scaling of Topological Quantum Computation
The induction of a 25 meV chiral topological gap in 45-degree twisted Bi-2212 heterostructures enables intrinsically protected quantum computation at 4 Kelvin, effectively resolving the thermodynamic and input-output bottlenecks that constrain current millikelvin superconducting architectures. The…
Continuous Signal Processing for Josephson Junction Readout
The prevailing architecture of superconducting quantum information processing relies heavily on the Josephson junction, yet its dual role as both a qubit-defining non-linear inductor and a latching readout element creates a fundamental tension in measurement dynamics. While the former enables the…
Structural vs Driven Quantum Coherence
The pursuit of ambient superconductivity is hampered by a fundamental trade-off between active, energy-intensive control and passive, structural stability. Current literature lacks a unified framework that connects the thermodynamic costs of information, substrate complexity, and the disparate…
Unifying Photosynthetic Energy Transduction and Ambient Superconductivity
Standard quantum mechanical interpretations rely on wave-particle duality to explain energy transduction, yet this duality often obscures the distinct functional roles of force carriers and matter particles in driven non-equilibrium systems. This manuscript proposes a radical “Signal-Worker”…
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