Superconducting Quantum Systems
Quantum Computers That Stay Coherent Long Enough to Matter
QuanTube builds fault-tolerant quantum processors: high-coherence superconducting qubits, real-time error correction, and a compiler that maps algorithms onto hardware.
The platform
What QuanTube does
High-Coherence Qubits
Superconducting qubits engineered for long coherence times, the raw material of every quantum algorithm.
Quantum Error Correction
Logical qubits built from many physical qubits, with real-time decoding that keeps errors below threshold.
Cryogenic Control
Dilution-refrigerator control electronics that address thousands of qubits at millikelvin temperatures.
Algorithm Compiler
A compiler stack that maps high-level quantum algorithms down to native gates and error-corrected circuits.
For the record
Questions
What can a quantum computer actually do?
For specific problems, simulating molecules, certain optimization, and cryptanalysis, quantum algorithms offer speedups no classical computer can match. It is not a faster general-purpose computer.
Why is error correction the hard part?
Qubits are fragile and decohere quickly. Fault tolerance encodes one logical qubit across many physical ones, with continuous decoding to catch errors before they spread.
How do you access the hardware?
Through our cloud API and compiler. You write algorithms at a high level and our stack maps them to the error-corrected machine.
Is this a threat to encryption?
Large fault-tolerant machines could eventually break some public-key cryptography, which is why post-quantum migration is underway. We are years from that scale, not days.
How do I get started?
Request access and we will onboard you to the compiler and a development allocation on the hardware.
Exploring quantum advantage?
Get early access to fault-tolerant hardware and a compiler that targets it.
Get in TouchNotes and essays
From the Blog
Coherence Time Is the Whole Ballgame
Every quantum algorithm is a race against decoherence. The longer a qubit holds its state, the more computation you can do before the answer dissolves into noise.
02Why One Logical Qubit Needs a Thousand Physical Ones
Fault tolerance sounds wasteful until you accept the premise: physical qubits are too noisy to trust, so you build reliable logical qubits out of many unreliable physical ones.
03Real-Time Decoding Is a Latency Problem
Detecting a quantum error is not enough. You have to decode and correct it faster than new errors accumulate, which turns error correction into a brutal real-time computing task.
04Controlling Thousands of Qubits at Millikelvin
Superconducting qubits live near absolute zero. Wiring up thousands of them, each needing precise control, without boiling the fridge is an engineering problem as hard as the physics.
05Quantum Will Be a Coprocessor, Not a Replacement
The hype frames quantum as a faster computer for everything. The reality is narrower and more useful: a specialized accelerator for the handful of problems where it has a genuine advantage.