QTREX says its cryogenic interconnect beat market leading cables by 60 dB in independent tests

[Badger]

Israeli company QTREX Quantum has announced test results for a new cryogenic interconnect designed for quantum computers. The product is made with additive manufacturing, essentially 3D printing electronics, and packs fully shielded channels about 0.34mm apart. That works out at around 30 channels per centimetre of width. Wiring is one of the biggest headaches in scaling superconducting quantum computers, so this is an interesting area. Superconducting machines need several lines per qubit, so the numbers add up quickly

The tests were carried out by an unnamed leading quantum computing company using its own fridge, instruments, reference cables and calibration at 20 millikelvin, the temperature superconducting processors run at. According to QTREX, the channel isolation was better than 100 dB across the 4 to 8 GHz band between neighbouring channels. That is 60 dB better than the market leading flexible cryogenic cabling. Channels also stayed phase matched at that temperature

The other figures look solid too. Insertion loss was about 1 dB at 1 GHz and 2 dB at 6 GHz including connectors, and the interconnect conducts roughly half the heat of equivalent coaxial cable. Heat matters enormously, because every cable brings warmth down into the fridge. Performance reportedly stayed the same through repeated cooldowns, bending and vacuum exposure

Chief executive Dagi Ben-Noon said 60 decibels more isolation than leading flexible cabling represents not an improvement but a different category. The company says it is finalising a binding agreement with the testing company and expects to name it within weeks. It also expects more quantum computing partnerships in the final quarter of the year

This links back to the Q-Factor piece and the 3D model of a superconducting computer, where the amount of wiring was obvious. Hand assembled coaxial cables will not get anyone to a million qubits. I would like to see the tester named before getting too excited, but the numbers are impressive if they hold up. Is wiring the most underrated problem in quantum computing?. Companies like this tend to live or die on their first big customer

Qtrex Interconnect Independently Tested At 20 Mk By A Leading Quantum Computing Company Over 100 Db Channel Isolation 60 Db Beyond The Market Leaderwww.globenewswire.com