For superconducting qubits, Josephson junctions are commonly used to enable the tunneling of Cooper pairs and, more importantly, to introduce the nonlinear energy spectrum required for qubit operation. However, as device dimensions approach the sub-1-nm scale, electron tunneling itself becomes increasingly difficult to suppress and control, and eventually becomes a fundamental issue in conventional semiconductor devices. Is it possible to instead utilize a sub-ångström-scale gate or tunneling barrier—for example, around 0.8 Å(even smaller than the size of typical silicon atom)—to deliberately manufacture a highly controlled tunneling element and use it in place of a Josephson junction, operating at or near the normal operating temperature of silicon? Of course, the formalism of the resulting quantum states would likely be more complicated. Rather than relying on the pure charge states of a quantum island, it may be more reasonable to consider effective states, hybridized states, or even topological states. Nevertheless, this approach seems more natural from a physical perspective. Quantum computers exploit quantum phenomena, and at sufficiently small scales, quantum effects are already present even at room temperature. Can improvements in manufacturing and nanoscale device engineering eventually eliminate the need for superconductivity in quantum computing? Is there existing work related to this idea, or are there fundamental issues in the underlying reasoning? In particular, should the relevant length scales, energy scales, or state spaces be reconsidered? *(Trapped ions, neutral atoms and photonics are different technologies lines)