QTREX Quantum reports over 100 dB isolation in test

QTREX expects to disclose the testing company’s identity, field of activity and full agreement within weeks.

Rhea-AI Filing Summary

QTREX Quantum Ltd. reported independent testing of its additively manufactured cryogenic interconnect by a leading quantum-computing company. The release reports over 100 dB of channel isolation, described as 60 dB more than leading flexible cabling on the market, at 20 millikelvin.

The testing company used its own cryogenic system, instruments, reference cables and calibration standards. QTREX says its shared-wall channels are about one-third of a millimeter apart, with close to 30 channels per centimeter of width, and that its design conducts about half the heat of an equivalent coaxial cable. QTREX and the testing company are finalizing a binding definitive agreement. QTREX expects to disclose the testing company’s full name, field of activity and the agreement within weeks, and expects additional agreements with several quantum-computing companies in the fourth quarter of 2026.

Filing Explained

This Form 6-K furnishes the press release and makes only its first, second, third and fifth paragraphs, “Key Results,” and forward-looking-statement disclaimer part of the listed Form F-3 and Form S-8 registration statements from the report’s submission date; the rest of the release is not incorporated.

Key Figures

Channel isolation: Over 100 dB Isolation difference: 60 dB more Testing temperature: 20 millikelvin +3 more

6 metrics

Channel isolation Over 100 dB Interconnect test result reported in the press release

Isolation difference 60 dB more Compared with leading flexible cabling on the market

Testing temperature 20 millikelvin Separate microwave-transmission tests

Channel spacing About one-third of a millimeter QTREX interconnect design

Channel density Close to 30 channels per centimeter of width QTREX interconnect design

Heat conduction About half the heat of an equivalent coaxial cable QTREX design description

Key Terms

Additively Manufactured Electronics, cryogenic interconnect, channel isolation, microwave transmission tests, +1 more

5 terms

Additively Manufactured Electronics technical

"focused on advancing Additively Manufactured Electronics"

Additively manufactured electronics are electronic components and circuits created by layer-by-layer printing techniques instead of traditional machining or assembly. Think of building a cake where each layer can contain wiring, sensors or conductive traces so a finished part can combine structure and electronics in one piece. For investors, this can cut production time and part counts, enable custom or lightweight designs, and open new product opportunities or cost savings across manufacturing and supply chains.

cryogenic interconnect technical

"independent testing of its AME cryogenic interconnect"

A cryogenic interconnect is the physical wiring and connector system that carries electrical signals and power between room-temperature electronics and devices kept at extremely low temperatures. Think of it as specially insulated plumbing that preserves delicate signals while bridging a warm control room and a very cold device; its quality affects system speed, error rates, and scalability, so investors watch it as a key enabler for commercial quantum computing and other low-temperature technologies.

channel isolation technical

"Over 100 dB Channel Isolation"

microwave transmission tests technical

"conducted separate microwave transmission tests at 20 millikelvin"

dilution cryostats technical

"connectivity solutions for dilution cryostats"

A dilution cryostat is a laboratory machine that creates extremely low temperatures—thousandths of a degree above absolute zero—by using a special mixture of helium isotopes. Think of it as a super-powerful freezer that lets researchers test and run delicate technologies such as quantum processors and ultra-sensitive sensors. For investors, access to or development of these systems signals involvement in advanced, capital-intensive technologies with long development cycles and potential for high strategic value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What isolation did QTEX report for its interconnect test?

QTREX reported over 100 dB of channel isolation, described as 60 dB more than leading flexible cabling on the market. A leading quantum-computing company conducted separate microwave-transmission tests at 20 millikelvin using its own cryogenic system and test equipment.

When does QTEX expect to disclose details of the testing agreement?

QTREX said it is finalizing a binding definitive agreement with the testing company and expects to disclose the company’s full name, its field of activity and the agreement in full within weeks. QTREX also expects to announce additional agreements with several quantum-computing companies in the fourth quarter of 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 6-K: How Foreign Companies Report to the SEC →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/01/2026 - 09:20 AM Accepted by SEC EDGAR 10/01/2026 - 09:20 AM Learn about SEC filing dates

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the Month of October 2026

Commission File Number: 001-40303

Qtrex Quantum Ltd.

(Translation of registrant’s name into English)

2 Ilan Ramon St.

Ness-Ziona 7403635, Israel

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

☒ Form 20-F ☐ Form 40-F

CONTENTS

On October 1, 2026, Qtrex Quantum Ltd. (the “Company”) issued a press release titled “QTREX Interconnect Independently Tested at 20 mK by a Leading Quantum Computing Company; Over 100 dB Channel Isolation, 60 dB Beyond the Market Leader,” a copy of which is furnished as Exhibit 99.1 with this Report of Foreign Private Issuer on Form 6-K (this “Report”).

The first, second, third and fifth paragraphs, the section titled “Key Results,” and the section titled “Forward-Looking Statement Disclaimer,” of the press release are incorporated by reference into the Company’s Registration Statements on Form F-3 (Registration Nos. 333-284308, 333-289324 and 333-296482) and Form S-8 (Registration Nos. 333-297590, 333-259057, 333-277980, 333-285565, 333-290162 and 333-292592), filed with the Securities and Exchange Commission, to be a part thereof from the date on which this Report is submitted, to the extent not superseded by documents or reports subsequently filed or furnished.

1

EXHIBIT INDEX

Exhibit Number		Description of Document
99.1		Press release issued by Qtrex Quantum Ltd. on October 1, 2026, titled “QTREX Interconnect Independently Tested at 20 mK by a Leading Quantum Computing Company; Over 100 dB Channel Isolation, 60 dB Beyond the Market Leader.”

2

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Qtrex Quantum Ltd.
Date: October 1, 2026	By:	/s/ Dagi Ben-Noon
		Name:	Dagi Ben-Noon
		Title:	Chief Executive Officer

3

Exhibit 99.1

QTREX Interconnect Independently Tested at 20 mK by a Leading Quantum Computing Company; Over 100 dB Channel Isolation, 60 dB Beyond the Market Leader

On the strength of these results, definitive agreement with the testing company being finalized; its name, business and the full agreement to be disclosed within weeks.

Ness Ziona, Israel, October 1, 2026 – QTREX Quantum Ltd. (Nasdaq: QTEX) (“QTREX” or the “Company”), a company focused on advancing Additively Manufactured Electronics (“AME”) for quantum computing infrastructure, today announced the results of independent testing of its AME cryogenic interconnect by one of the quantum computing industry’s leading companies. The testing company conducted separate microwave transmission tests at 20 millikelvin in its own cryogenic system, using its own instruments, reference cables and calibration standards. The results confirm the interconnect’s microwave performance at an operating temperature of superconducting quantum processors. On the strength of these results, QTREX and the testing company are finalizing a binding definitive agreement.

Key results:

● Channel to channel isolation better than 100 dB across the 4 to 8 GHz qubit band, between adjacent channels on a 0.34 millimeter pitch over a 15 centimeter run. No crosstalk was detected above the instrument’s noise floor in any tested channel pair, adjacent or not. This exceeds the published 40 dB channel to channel crosstalk specification of leading flexible cryogenic cabling by more than 60 dB.

● Channel to channel phase matching at 20 millikelvin. Cryogenic testing confirmed that channels formed together in a single monolithic AME body remain phase matched, supporting precise coordination of microwave signals for qubit control and readout.

● Impedance held constant along the entire line, with reflections from the line itself below 55 dB from 2 to 15 GHz, a uniformity previously seen only in machined coaxial cable.

● Insertion loss at 20 millikelvin of approximately 1 dB at 1 GHz and 2 dB at 6 GHz, including connectors. Cooling from room temperature reduced insertion loss, expressed in dB, by approximately a factor of three.

● Performance unchanged across repeated cooldowns. The channels measured at 20 millikelvin returned the same results in a second cooldown after warming to room temperature.

● RF performance unchanged under significant bending and after vacuum exposure, with X-ray and optical inspection showing no cracks, delaminations or subsurface defects.

Every qubit needs several microwave lines running down to 20 millikelvin. Today’s thousand qubit machines already carry thousands of hand assembled coaxial cables, and the million qubit machines the industry is building toward cannot be wired that way. Dense, monolithic interconnect that isolates every channel, holds the channels in phase with one another and performs at 20 millikelvin is the missing piece. QTREX’s additively manufactured interconnect delivers it.

QTREX’s architecture places fully shielded channels about a third of a millimeter apart, close to 30 channels per centimeter of width, with every shield wall shared between neighboring channels. Radio frequency current flows within about a micron of a conductor’s surface, while every micron of metal conducts heat, so the thin shared walls carry the signal without the excess metal that carries heat. By design, the interconnect conducts about half the heat of an equivalent coaxial cable into the cooling stages, and less than the published figures of leading flexible cryogenic cabling at the millikelvin stages, where cooling power is scarcest.

“The coldest, most unforgiving environment in computing. One of the most exacting teams in our industry. Their instruments, their cryogenic system, their reference cables. That is the test, and these are the results,” said Dagi Ben-Noon, Chief Executive Officer of QTREX Quantum. “We view 60 decibels more isolation than the leading flexible cabling on the market as not an improvement but a different category, and it is what a million qubit machine will require.”

QTREX and the testing company are finalizing a binding definitive agreement. The Company expects to disclose the testing company’s full name, its field of activity and the agreement in full within weeks. The Company also expects to announce additional agreements with several companies in quantum computing in the fourth quarter of 2026.

About QTREX Quantum

QTREX Quantum Ltd. (Nasdaq: QTEX) is a technology company focused on advanced connectivity and electronics manufacturing solutions for quantum computing and other advanced hardware markets. Following its acquisition of the AME platform, the Company is developing high-density, thermally optimized quantum connectivity solutions for dilution cryostats and advancing AME applications for defense, aerospace, missile, space, and other mission-critical environments. The Company also continues to advance its medical technology portfolio, including respiratory support and blood monitoring platforms, while actively working to monetize certain parts of the medical business.

For more information, please visit: www.q-trex.com

Forward-Looking Statement Disclaimer

This press release contains express or implied forward-looking statements pursuant to U.S. Federal securities laws. These forward-looking statements are based on the current expectations of the management of the Company only and are subject to factors and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. For example, the Company is using forward-looking statements when it discusses the expected benefits of the testing results; that it is finalizing a binding definitive agreement with the testing company and expects to announce the contents of the agreement and the name of the party in the coming weeks; the belief that a dense, monolithic interconnect that isolates every channel, holds the channels in phase with one another and performs at 20 millikelvin is the missing piece and that its additively manufactured interconnect delivers it; that it views 60 decibels more isolation than the leading flexible cabling on the market as not an improvement but a different category, and it is what it believes a million qubit machine will require; and that it expects to announce additional agreements with several companies in quantum computing in the fourth quarter of 2026. Except as otherwise required by law, the Company undertakes no obligation to publicly release any revisions to these forward-looking statements. More detailed information about the risks and uncertainties affecting the Company is contained under “Risk Factors” in the Company’s annual report on Form 20-F for the fiscal year ended December 31, 2025, filed with the U.S. Securities and Exchange Commission.

Company Contact
QTREX Quantum
Email: info@q-trex.com
Phone: +972-9-9664485

Filing Exhibits & Attachments

1 document

Press Releases

• EX-99.1 EXHIBIT 99.1 19.5 KB