— ZELOCON / Devices

Superconducting building blocks — without a cryostat.

1. ZELOCON targets five superconducting device families.

2. These include Josephson junctions, SQUIDs, SNSPDs, THz/RF parts and interconnects.

3. The goal is superconducting function without a cryostat.

ZELOCON’s device roadmap spans five families in which room-temperature superconductivity for microelectronics could bring superconducting function out of cryogenic niches: Josephson junctions, SQUIDs, single-photon detectors, THz/RF components and low-loss interconnects.

What are Josephson junctions, qubits and SFQ logic?

METROLOGY · QUANTUM · SUPERCONDUCTING ELECTRONICS

Josephson junctions are two superconducting electrodes with weak coupling — the foundation of qubits, single-flux-quantum (SFQ) logic, voltage standards and parametric amplifiers.

Remove cooling, coax, shielding and dilution stages entirely; enable denser integration.

Reproducible, low-noise barriers; TLS losses, interface and packaging effects dominate coherence.

What are SQUIDs and nano-SQUIDs used for?

MAGNETOMETRY · BIOMAGNETISM · METROLOGY

SQUIDs are among the most sensitive magnetic-field sensors known, used in biomagnetism and metrology. Today’s HTS SQUIDs need cryogenics at 77 K but remain far more complex than an ambient-temperature sensor.

Preserve the superconducting sensor physics while the system moves to classic industrial/medical form factors — with graphite’s intrinsically low noise.

Flux noise, shielding, stable contacts.

What are single-photon detectors (SNSPDs)?

QKD · PHOTONICS · LIDAR · SPECTROSCOPY

Single-photon detectors (SNSPDs) sense individual photons for Quantum Key Distribution (QKD), photonics and Light Detection and Ranging (LiDAR). Today’s leading detectors use NbN, NbTiN, WSi or MoSi nanowires deep in the cryogenic regime.

Cryogen-free QKD receivers, compact LiDAR front-ends and photonic sensing in standard packages; low phonon occupation helps the dark-count rate.

Nanowire homogeneity, dark rate, hotspot physics.

How are superconductors used in THz and RF components?

MIXERS · RESONATORS · FILTERS · AMPLIFIERS

Superconductors enable very-high-Q resonators, low-loss filters and ultra-low-noise front-ends. Functional superconductivity above 300 K opens THz sensing and precise reference systems without a cryostat.

High-Q, ultra-low-noise front-ends at room temperature.

RF surface impedance, parasitics, packaging.

What are low-loss superconducting interconnects?

ON-CHIP & PACKAGE ROUTING

Low-loss interconnects are superconducting routing paths for on-chip connections, through-substrate/package interconnects, reference lines and current-carrying microstructures — an often-underestimated segment.

Superconducting routing where Joule losses dominate in dense electronics — the most plausible path to early, volume-adjacent demonstrators.

Contact resistance, current density, reliability.

— From material to application

Material → device → application: one continuous platform, three layers, from re-ordered graphite to the end system.

— Frequently asked questions

Frequently asked questions about the devices

Can superconducting devices work without a cryostat?

That is ZELOCON’s goal: room-temperature superconductivity for microelectronics would let Josephson junctions, SQUIDs and detectors operate without cryogenic cooling, removing cost, size and energy overhead.

Which device family is closest to a demonstrator?

Low-loss interconnects and SQUID-type sensing are the most plausible early demonstrators, ahead of coherence-limited qubit systems.

Where does room-temperature superconductivity change the system?

The strongest lever is where extreme sensitivity or extremely low losses are achievable today only with cryogenics.