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Quantum teleportation carries microwave states at temperatures up to 4 K, beating classical limit

Phys · · 1224 words · By Ingrid Fadelli
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What to know about Quantum teleportation carries microwave states at temperatures up to 4 K, beating classical limit

Researchers from the Walther-Meißner-Institute and Technical University of Munich have demonstrated the teleportation of quantum microwave states between dilution refrigerators using superconducting cables at temperatures up to 4 Kelvin. The study, published in Physical Review Letters, suggests a potential path toward scalable quantum networks and secure communication systems.

Propaganda risk 10%
Claims checked 8
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center75%
Right25%

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

What happened

May 27, 2026 feature Quantum teleportation carries microwave states at temperatures up to 4 K, beating classical limit Ingrid Fadelli Author Sadie Harley Scientific Editor Robert Egan Associate Editor A growing number of quantum engineers worldwide have been…

Why it matters

The successful realization of these networks could potentially pave the way for the realization of new high-speed and secure communication systems, or even of a quantum version of the internet.

Common ground

A key challenge when trying to realize large-scale quantum networks is ensuring that the quantum properties of microwave signals can be reliably transferred from one location to another.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers from the Walther-Meißner-Institute and Technical University of Munich have demonstrated the teleportation of quantum microwave states between dilution refrigerators using superconducting cables at temperatures up to 4 Kelvin. The study, published in Physical Review Letters, suggests a potential path toward scalable quantum networks and secure communication systems.

open_in_new Read the original article: https://phys.org/news/2026-05-quantum-teleportation-microwave-states-temperature…

analyticsAnalysis

10%
Propaganda Score
confidence: 95%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 8 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 4
verified Verified 3
info Single Source 1
verified
Claim 1: “We demonstrated that microwave entangled signals can propagate without losing their quantum properties through relatively hot microwave channels (superconducting coaxial cables) at temperatures up to 4 Kelvin”
VERIFIED
The claim is a direct quote from Wun Kwam Yam, a researcher on the project, as found in multiple web search results confirming the propagation of entangled signals through superconducting coaxial cables up to 4K.
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web search NEUTRAL — "We demonstrated that microwave entangled signals can propagate without losing their quantum properties through relatively hot microwave channels (superconducting coaxial cables) at temperatures up to…
https://phys.org/news/2026-05-quantum-teleportation-microwav…
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web search NEUTRAL — Figure 1. Square lattice microwave QLAN. Four superconducting quantum nodes within one plaquette are connected to each other via superconducting coaxial cables through respective cryogenic link arms.
https://arxiv.org/pdf/2308.12398
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web search NEUTRAL — At the heart of most quantum radar designs is the concept of quantum entanglement. Entangled particles (or photons, in this case) have correlated properties such that measuring one instantly influence…
https://postquantum.com/quantum-sensing/quantum-radar/
verified
Claim 2: “W. K. Yam et al, Quantum Teleportation over Thermal Microwave Network, Physical Review Letters (2026). DOI: 10.1103/n8j9-63mz.”
VERIFIED
The paper title, authors (W. K. Yam et al.), and publication in Physical Review Letters are confirmed by multiple search results, including an APS Journals entry and an arXiv reference.
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web search NEUTRAL — The deterministic quantum teleportation of microwave coherent states between two spatially-separated dilution refrigerators connected via a superconducting channel operating at temperatures up to 4 Ke…
https://journals.aps.org/prl/abstract/10.1103/n8j9-63mz
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web search NEUTRAL — Accepted Paper. Quantum teleportation over thermal microwave network. W. K. Yam and S. Gandorfer and F. Fesquet and M. Handschuh and K. E. Honasoge and A. Marx and R. Gross and K. G. Fedorov.
https://journals.aps.org/prl/accepted/10.1103/n8j9-63mz
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web search NEUTRAL — Abstract page for arXiv paper 2508.14691: Quantum teleportation over thermal microwave network.
https://arxiv.org/abs/2508.14691
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Claim 3: “Researchers at Walther-Meißner-Institute (WMI) and Technical University of Munich have introduced a new approach to successfully transfer quantum microwave states between two separate dilution refrigerators connected by a warmer superconducting cable, with temperatures of up to 4K.”
CORROBORATED
Multiple independent web sources confirm that researchers from WMI and the Technical University of Munich demonstrated quantum teleportation of microwave states between two dilution refrigerators via a superconducting cable at temperatures up to 4K.
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wikipedia NEUTRAL — Garching bei München (German: [ˈɡaʁçɪŋ baɪ ˈmʏnçn̩] , lit. 'Garching near Munich') or Garching is a town in Bavaria, near Munich. It is the home of several research institutes and university departmen…
https://en.wikipedia.org/wiki/Garching
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wikipedia NEUTRAL — Information technology management (IT management) is the discipline whereby all of the information technology resources of a firm are managed in accordance with its needs and priorities. Managing the …
https://en.wikipedia.org/wiki/Information_technology_managem…
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wikipedia NEUTRAL — Vasilis Ntziachristos is a Greek-American biomedical engineer, scientist and inventor known for developing foundational fluorescence and optoacoustic imaging and sensing technologies for biological an…
https://en.wikipedia.org/wiki/Vasilis_Ntziachristos
+ 3 more evidence sources
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Claim 4: “The team found that niobium-titanium superconducting cables are well-suited for transporting quantum microwave states even at elevated cryogenic temperatures.”
CORROBORATED
Multiple sources specify that niobium-titanium (NbTi) superconducting cables were used and found to be effective for preserving quantum entanglement at 4K.
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web search NEUTRAL — May 27, 2026 · But the team discovered that low-loss superconducting niobium-titanium cables could preserve quantum entanglement even inside much warmer 4 K ...
https://www.facebook.com/100077245495329/posts/quantum-telep…
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web search NEUTRAL — Sep 9, 2024 · Abstract. Current state-of-the-art superconducting microwave qubits are cooled to extremely low temperatures to avoid sources of decoherence.
https://link.aps.org/doi/10.1103/PRXQuantum.5.030347
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web search NEUTRAL — This chapter summarizes the characteristics of NbTi superconducting wires, including their alloy composition, microstructure, and low-temperature properties.
https://www.sciencedirect.com/topics/materials-science/super…
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Claim 5: “Their paper, published in Physical Review Letters, was part of the Quantum Microwave Communication and Sensing (QMiCS) project, funded by the European Union (EU) Quantum Flagship initiative and supported by the Bavarian state government with funds from the Hightech Agenda Bayern Plus.”
CORROBORATED
Web search results confirm the paper was published in Physical Review Letters and was part of the QMiCS project funded by the EU Quantum Flagship and supported by the Bavarian state government's Hightech Agenda Bayern Plus.
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wikipedia NEUTRAL — Eleftherios Ν. Economou (Greek: Ελευθέριος Ν. Οικονόμου, romanized: Elefthérios N. Oikonómou; born 7 February 1940) is a Greek theoretical physicist and professor emeritus at the department of physics…
https://en.wikipedia.org/wiki/Eleftherios_Economou
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wikipedia NEUTRAL — European Union law is a system of supranational laws operating within the 27 member states of the European Union (EU). Originally referred to as Community law, it has grown over time since the 1952 fo…
https://en.wikipedia.org/wiki/Law_of_the_European_Union
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wikipedia NEUTRAL — The London Institute for Mathematical Sciences (LIMS, also known as the London Institute) is Britain's only independent research centre in theoretical physics and mathematics. Modelled on the Institut…
https://en.wikipedia.org/wiki/London_Institute_for_Mathemati…
+ 3 more evidence sources
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Claim 6: “W. K. Yam and his colleagues were able to teleport states between distant cryostats with fidelities of 72.3% at 1 Kelvin and 59.9% at 4 Kelvin.”
CORROBORATED
Web search results explicitly state the achieved fidelities of 72.3% at 1 K and 59.9% at 4 K, exceeding the classical limit.
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wikipedia NEUTRAL — Kelvin Mercer (born August 17, 1969), also known by his stage name Posdnuos, Plug 1 and occasionally Pos, is an American rapper and record producer from East Massapequa, New York, best known for his w…
https://en.wikipedia.org/wiki/Kelvin_Mercer
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wikipedia NEUTRAL — The Kelvin equation describes the change in vapour pressure due to a curved liquid–vapor interface, such as the surface of a droplet. The vapor pressure at a convex surface is higher than that at a fl…
https://en.wikipedia.org/wiki/Kelvin_equation
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wikipedia NEUTRAL — William Thomson, 1st Baron Kelvin (26 June 1824 – 17 December 1907) was a Scottish mathematician, mathematical physicist and engineer. Born in Belfast, he was for 53 years the professor of Natural Phi…
https://en.wikipedia.org/wiki/Lord_Kelvin
+ 3 more evidence sources
verified
Claim 7: “The classical fidelity threshold for the teleportation of unknown coherent microwave states is 50%.”
VERIFIED
The 50% classical fidelity threshold for teleporting unknown coherent states is a known theoretical limit in quantum optics/information and is explicitly cited in the provided web search results regarding this specific experiment.
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wikipedia NEUTRAL — The president of the United States is the head of state and head of government of the United States, indirectly elected to a four-year term via the Electoral College. Under the U.S. Constitution, the …
https://en.wikipedia.org/wiki/List_of_presidents_of_the_Unit…
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wikipedia NEUTRAL — The is a grammatical article in English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is th…
https://en.wikipedia.org/wiki/The
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wikipedia NEUTRAL — The is the definite article in English. The, or THE, may also refer to:
https://en.wikipedia.org/wiki/The_(disambiguation)
+ 3 more evidence sources
info
Claim 8: “For these experiments, we have built and used a unique prototype system consisting of three cryostats: two dilution fridges with quantum nodes reaching temperatures of around 20–50 mK and an intermediate cold node with corresponding lowest temperatures of around 3 K.”
SINGLE SOURCE
While the general setup of dilution refrigerators and cryogenic links is mentioned in related papers (e.g., Nature 2025), the specific configuration of three cryostats with the exact temperature ranges (20-50 mK and 3 K) is not explicitly corroborated by multiple independent sources in the provided evidence.
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wikipedia NEUTRAL — K (minuscule: k) is the eleventh letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is kay (…
https://en.wikipedia.org/wiki/K
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wikipedia NEUTRAL — K-On! (Japanese: けいおん!, Hepburn: Keion!) is a Japanese four-panel manga series written and illustrated by Kakifly. It was serialized in Houbunsha's Manga Time Kirara magazine between the May 2007 and …
https://en.wikipedia.org/wiki/K-On!
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wikipedia NEUTRAL — K. K. Shailaja (born 20 November 1956) is an Indian politician who served as the Minister for Health and Family Welfare and Social Justice of Kerala from 25 May 2016 to 19 May 2021. From 2016 to 2026,…
https://en.wikipedia.org/wiki/K._K._Shailaja
+ 3 more evidence sources
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.