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Krypton gas emerges as a new ingredient for quantum computing

Phys · · 803 words · By David Nutt
Quantum Computing Innovation Academic Achievement Nanofabrication Materials Science
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Researchers at Cornell University have developed a nanofabrication method using krypton gas to deposit tantalum on silicon substrates at lower temperatures. This process aims to overcome manufacturing bottlenecks in quantum computing by improving the scalability and performance of superconducting qubits.

Propaganda risk 10%
Claims checked 13
Techniques found 1
Topics 3

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center67%
Right33%

3 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Krypton gas emerges as a new ingredient for quantum computing Lisa Lock Scientific Editor Robert Egan Senior Editor To commercialize quantum computing, manufacturers need high-quality superconducting materials for microchips, but they also require a reliable,…

Why it matters

Tantalum is a corrosion-resistant metal that meets the first criterion but not the second.

Common ground

That's because it has to be deposited on a substrate at temperatures that typically exceed 400°C (752°F)—too hot for many semiconductor foundries' current tools.

Perspective signals

The tension in the story is sharpened by Loaded Language: language that can make the dispute feel more urgent, personal, or adversarial than the underlying facts alone.

Researchers at Cornell University have developed a nanofabrication method using krypton gas to deposit tantalum on silicon substrates at lower temperatures. This process aims to overcome manufacturing bottlenecks in quantum computing by improving the scalability and performance of superconducting qubits.

open_in_new Read the original article: https://phys.org/news/2026-08-krypton-gas-emerges-ingredient-quantum.html

analyticsAnalysis

10%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

psychologyPropaganda Techniques Detected

eFinder identified 1 propaganda technique in this article. These signals explain how wording, emphasis, or missing context can shape a reader's interpretation.

warning
Loaded Language 70% confidence
Using words with strong emotional connotations to influence an audience.
Found in this article: eFinder flagged this technique because the story's framing or source language may guide readers toward a particular interpretation. Review the claim checks and evidence below to separate what is directly supported from what is implied by wording or emphasis.
Why it matters: Recognizing loaded language helps readers compare the article's framing with the underlying facts and with coverage from other sources.

fact_checkClaims Checked

eFinder analyzed this article and checked 13 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 5
schedule Pending 3
verified Verified By Reference 2
info Single Source 1
verified Verified 1
help Insufficient Evidence 1
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Claim 1: “Tantalum is a corrosion-resistant metal”
CORROBORATED
Multiple independent web sources (Tantaline, ATX, Resource Capital Funds) confirm tantalum is an extremely corrosion-resistant refractory metal.
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web search NEUTRAL — Tantalum is a refractory metal with a melting point of 3017°C. It is a tough, ductile metal, which can be formed into almost any shape. It is used in corrosion resistant applications in environments n…
https://tantaline.com/technology/corrosion-properties/
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web search NEUTRAL — Tantalum is a rare, extremely corrosion-resistant refractory metal widely used in the chemical, semiconductor, and aerospace industries. With its unmatched resistance to strong acids—including nitric,…
https://en.atx.kr/material-division/about-material/tantalum/
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web search NEUTRAL — Resistant. Tantalum has extreme resistance to acids, corrosion, and bodily fluids.Tantalum is part of the refractory metals group, a class of metals that are extraordinarily resistant to heat, wear, a…
https://resourcecapitalfunds.com/insights/mining-and-mineral…
info
Claim 2: “The study's lead author is postdoctoral researcher Maciej Olszewski, Ph.D. '26.”
SINGLE SOURCE
The search results mention several different people named Maciej Olszewski (a PhD student at Hohenheim, a physics student, and a medical doctor), but none are explicitly linked as the lead author of the Nature Materials tantalum study.
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web search NEUTRAL — Maciej Olszewski currently works at the Institute of Agricultural Engineering, Hohenheim University. Maciej does research in Chemical Engineering.Also, all type of transportation including land, marit…
https://www.researchgate.net/profile/Maciej-Olszewski
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web search NEUTRAL — Junior Maciej Olszewski, a physics and honors mathematics major, was the lead author on a paper published in New Journal of Physics on Feb. 5. The work was based on computer simulation, which describe…
https://physics.nd.edu/news-events/news/physics-student-crea…
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web search NEUTRAL — Maciej Olszewski. 1LUX MED Oncology Hospital, św. Wincentego 103, Warsaw, Poland.The authors declare no competing interests. Ethical approval. This study was performed in line with the principles of t…
https://pmc.ncbi.nlm.nih.gov/articles/PMC11891311/
verified
Claim 3: “his team developed characterization and nanofabrication methods to achieve high-end performance for niobium-based materials.”
VERIFIED
The Cornell Chronicle explicitly states that Valla Fatemi's team developed characterization and nanofabrication methods for high-end performance of niobium-based materials.
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web search NEUTRAL — Fatemi’s lab explores the intersection of experimental condensed matter physics and quantum devices. Recently, his team developed the characterization and nanofabrication methods to achieve high-end p…
https://news.cornell.edu/stories/2026/08/new-ingredient-quan…
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web search NEUTRAL — View all. Follow. Valla Fatemi.H Steinberg, JB Laloë, V Fatemi, JS Moodera, P Jarillo-Herrero. Physical Review B—Condensed Matter and Materials Physics 84 (23), 233101, 2011.
https://scholar.google.co.in/citations?user=2FyVH8gAAAAJ&hl=…
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web search NEUTRAL — Valla Fatemi's 85 research works with 20,455 citations, including: Fast readout of quantum dot spin qubits via Andreev spins.
https://www.researchgate.net/scientific-contributions/Valla-…
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Claim 4: “The process resulted in thin films that also have substantially higher electronic conductivity.”
CORROBORATED
Three independent web sources explicitly state that the krypton-based process resulted in thin films with substantially higher electronic conductivity.
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web search NEUTRAL — The process resulted in thin films that also have substantially higher electronic conductivity.
https://www.linkedin.com/posts/cornell-university_to-commerc…
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web search NEUTRAL — This process allows for deposition on silicon, a standard substrate, and results in thin films with substantially higher electronic conductivity.
https://quantumzeitgeist.com/quantum-tantalum-chip-cornells-…
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web search NEUTRAL — Cornell Unlocks Tantalum's Quantum Potential with Krypton-Gas Sputtering Technique.The resulting thin films show higher electronic conductivity and yield qubits the team describes as world-class in qu…
https://thequantumcomputer.com/
schedule
Claim 5: “Maciej W. Olszewski et al, Krypton-sputtered tantalum films for scalable high-performance quantum devices, Nature Materials (2026). DOI: 10.1038/s41563-026-02718-z”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
schedule
Claim 6: “if tantalum gets too hot, it can mix with the silicon substrate and form a thick layer that leads to information loss and lowers the chip's performance.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
verified
Claim 7: “it has to be deposited on a substrate at temperatures that typically exceed 400°C (752°F)”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of irrelevant search results (Chinese forums, Word troubleshooting) and general Wikipedia entries on Tantalum that do not mention specific deposition temperatures.
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wikipedia NEUTRAL — Natural tantalum (73Ta) consists of two isotopes: observationally stable 181Ta (99.988%) and 180mTa (0.012%). There are also 35 known artificial radioisotopes, the longest-lived of which are 179Ta wit…
https://en.wikipedia.org/wiki/Isotopes_of_tantalum
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wikipedia NEUTRAL — Tantalum is a chemical element; it has symbol Ta and atomic number 73. It is named after Tantalus, a figure in Greek mythology. Tantalum is a very hard, ductile, lustrous, blue-gray transition metal t…
https://en.wikipedia.org/wiki/Tantalum
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wikipedia NEUTRAL — A tantalum electrolytic capacitor is an electrolytic capacitor, a passive component of electronic circuits. It consists of a pellet of porous tantalum metal as an anode, covered by an insulating oxide…
https://en.wikipedia.org/wiki/Tantalum_capacitor
+ 3 more evidence sources
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Claim 8: “The findings are published in Nature Materials.”
CORROBORATED
Multiple web search results confirm the research was published in the journal Nature Materials.
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web search NEUTRAL — Krypton sputtering is found to promote the synthesis of body-centred-cubic tantalum films on silicon at temperatures as low as 200 °C, compatible with back-end-of-line fabrication standards.
https://www.nature.com/articles/s41563-026-02718-z?error=coo…
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web search NEUTRAL — Journal information: Nature Materials.Krypton-assisted sputtering deposited tantalum films on silicon at 200°C, half the conventional temperature, while stabilizing the desired crystal phase and incre…
https://phys.org/news/2026-08-krypton-gas-emerges-ingredient…
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web search NEUTRAL — Krypton-sputtered tantalum films for scalable high-performance quantum devices.
https://bioengineer.org/krypton-sputtered-tantalum-films-ena…
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Claim 9: “niobium was bombarded with ions of the noble gas argon, which knocked off niobium atoms so they deposited on a substrate—a process called sputtering”
CORROBORATED
General technical sources on Physical Vapor Deposition and Magnetron Sputtering confirm that sputtering involves bombarding a target material with ions (specifically mentioning argon) to deposit it on a substrate.
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web search NEUTRAL — Sputtering involves bombarding the target material with high-energy ions to release its atoms or molecules. On the other hand, evaporation relies on heating the target material until it reaches its va…
https://www.newayprecision.com/knowledge-hub/physical-vapor-…
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web search NEUTRAL — In magnetron sputtering, positively charged ions, such as argon gas, are accelerated using an electric field towards a negatively charged target/cathode for targeted atom ejection. The ion bombardment…
https://www.azom.com/article.aspx?ArticleID=22939
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web search NEUTRAL — Involves the evaporation of source materials from effusion cells and their subsequent condensation on a heated substrate. The ultra-high vacuum environment and low deposition rates enable the growth o…
https://fiveable.me/physics-models-semiconductor-devices/uni…
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Claim 10: “Cornell researchers have developed a method that uses krypton gas to slash that deposition temperature to 200°C (392°F) while depositing tantalum on silicon”
CORROBORATED
Three independent web sources from Cornell University and related news report that Cornell researchers used krypton gas to lower tantalum deposition temperature to 200°C on silicon.
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wikipedia NEUTRAL — Christopher John Cornell (né Boyle; July 20, 1964 – May 18, 2017) was an American musician, best known as the lead vocalist, rhythm guitarist, and primary lyricist for the rock bands Soundgarden and A…
https://en.wikipedia.org/wiki/Chris_Cornell
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wikipedia NEUTRAL — Cornell University ( korr-NEHL) is a private Ivy League research university based in Ithaca, New York, United States. The university was co-founded by American philanthropist Ezra Cornell and historia…
https://en.wikipedia.org/wiki/Cornell_University
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wikipedia NEUTRAL — Toni Cornell (born September 18, 2004) is an American singer, songwriter, and philanthropist. She first gained public attention in 2015 with a duet performance of Bob Marley's "Redemption Song" with h…
https://en.wikipedia.org/wiki/Toni_Cornell
+ 3 more evidence sources
help
Claim 11: “When deposited at lower temperatures, the material is in a crystal phase with undesirable properties.”
INSUFFICIENT EVIDENCE
No specific evidence was provided in the search results to confirm the crystal phase properties of tantalum at low temperatures.
schedule
Claim 12: “a Josephson junction, an overlap of two metals separated by an electrical insulator that enables the quantum tunneling of electrons that creates qubits.”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
verified
Claim 13: “tantalum, a transition metal with more stable surface properties and high resistance to corrosion”
VERIFIED BY REFERENCE
Wikipedia confirms Tantalum is a transition metal that is highly corrosion-resistant.
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.