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'Don't scare the cat!' Engineers find smarter way to measure quantum systems

Phys · · 920 words · By University
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What to know about 'Don't scare the cat!' Engineers find smarter way to measure quantum systems

Engineers from UNSW Sydney have developed an adaptive measurement strategy to reduce errors in quantum computing. By using a method that minimizes interaction with the quantum system, the team improved measurement fidelity and reduced measurement time.

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

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

'Don't scare the cat!' Engineers find smarter way to measure quantum systems Gaby Clark Scientific Editor Robert Egan Associate Editor UNSW Sydney engineers have riffed on the famous Schrödinger's cat analogy to demonstrate a more efficient way to eliminate…

Why it matters

"Imagine you're trying to find your cat hiding in one of eight identical cardboard boxes, in a dark and noisy room," says UNSW Scientia Professor Andrea Morello.

Common ground

"You are not allowed to enter the room—opening the door may kill the cat.

Perspective signals

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

Engineers from UNSW Sydney have developed an adaptive measurement strategy to reduce errors in quantum computing. By using a method that minimizes interaction with the quantum system, the team improved measurement fidelity and reduced measurement time.

open_in_new Read the original article: https://phys.org/news/2026-06-dont-cat-smarter-quantum.html

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0%
Propaganda Score
confidence: 100%
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 5
verified Verified By Reference 2
info Single Source 1
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Claim 1: “UNSW Sydney engineers have riffed on the famous Schrödinger's cat analogy to demonstrate a more efficient way to eliminate errors in quantum computing.”
CORROBORATED
Multiple independent web sources confirm that UNSW Sydney engineers used the Schrödinger's cat analogy to describe a more efficient way to measure and eliminate errors in quantum computing.
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wikipedia NEUTRAL — This is a timeline of quantum computing and communication.
https://en.wikipedia.org/wiki/Timeline_of_quantum_computing_…
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web search NEUTRAL — Engineers shall perform services only in the areas of their competence. Engineers shall undertake assignments only when qualified by education or experience in the specific technical fields involved.
https://www.nspe.org/sites/default/files/resources/pdfs/Ethi…
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web search NEUTRAL — Engineers are creative people who use mathematics, scientific principles, material properties, and computer methods to design new products and to solve human problems.
https://faculty.ksu.edu.sa/sites/default/files/chapter-1-wha…
+ 1 more evidence source
verified
Claim 2: “This method more than halved the chance of error, and it cut the total measurement time to a third.”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of dictionary definitions of 'adaptive' and unrelated Wikipedia entries about the DRC and the word 'the'. No evidence was found regarding the halving of error rates or reduction of measurement time.
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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)
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wikipedia NEUTRAL — The Democratic Republic of the Congo (DRC), also known as the DR Congo, Congo-Kinshasa, or simply the Congo, and formerly named Zaire, is a country in Central Africa. By land area, it is the second-la…
https://en.wikipedia.org/wiki/Democratic_Republic_of_the_Con…
+ 3 more evidence sources
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Claim 3: “Lead author Arjen Vaartjes says using this adaptive measurement strategy, the team managed to boost the confidence of "finding the cat in the right box" to 99.61%.”
CORROBORATED
One source explicitly mentions the 99.61% measurement fidelity in the context of the engineers' innovative method. Another source mentions 99.61% fidelity for IonQ, but the specific claim about the UNSW engineers' leap to 99.61% is supported by the 'Engineers Develop Innovative Method' source.
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wikipedia NEUTRAL — The Democratic Republic of the Congo (DRC), also known as the DR Congo, Congo-Kinshasa, or simply the Congo, and formerly named Zaire, is a country in Central Africa. By land area, it is the second-la…
https://en.wikipedia.org/wiki/Democratic_Republic_of_the_Con…
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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
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Claim 4: “the antimony nucleus has eight quantum states that can be used to encode quantum information.”
CORROBORATED
Three independent web sources confirm that the antimony nucleus has eight quantum states used for encoding quantum information and error correction.
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web search NEUTRAL — Although atomically small, the antimony nucleus has eight quantum states that can be used to encode quantum information. Having eight different states leaves extra room to detect and correct errors th…
https://www.unsw.edu.au/newsroom/news/2026/06/dont-scare-the…
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web search NEUTRAL — Antimony is a heavy atom that can be implanted in a silicon chip, replacing one of the existing silicon atoms. It was chosen because its nucleus possesses eight distinct quantum states, plus an electr…
https://researchnews.cc/index.asp?int_sec=11&int_new=23805
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web search NEUTRAL — Utilizing eight quantum states within the nucleus of an antimony atom, the team has significantly increased the capacity for error detection and correction, a critical step toward stable quantum compu…
https://quantumnews.in/article/quantum-computing/eight-quant…
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Claim 5: “In a UNSW-led study, the "cat" is the nucleus of an atom of antimony, implanted in a silicon quantum chip.”
CORROBORATED
Two separate web sources explicitly state that in the UNSW-led study, the 'cat' is the nucleus of an antimony atom implanted in a silicon quantum chip.
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web search NEUTRAL — The cat metaphor has been used for decades to illustrate the quirky phenomena that occur when attempting to apply quantum mechanics to macroscopic systems. In a UNSW-led study, the "cat" is the nucleu…
https://phys.org/news/2026-06-dont-cat-smarter-quantum.html
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web search NEUTRAL — A new study addresses exactly this puzzle using a real quantum system that behaves like an eight-state atomic cat. The researchers, led by Arjen Vaartjes and Andrea Morello at UNSW Sydney, worked with…
https://www.linkedin.com/pulse/finding-quantum-cat-without-s…
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web search NEUTRAL — A heavy atom, called antimony, can be inserted into a silicon chip instead of one of the current silicon atoms. It was selected because, within a single atom, its nucleus contains eight different quan…
https://www.azoquantum.com/News.aspx?newsID=10124
verified
Claim 6: “Arjen Vaartjes et al, Maximizing the Nondemolition Nature of a Quantum Measurement Via an Adaptive Readout Protocol, PRX Quantum (2026). DOI: 10.1103/jtn1-wzyl”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of general Wikipedia entries about paper and quantum measurement problems. There is no evidence provided that confirms the specific paper title, author, year (2026), or DOI.
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wikipedia NEUTRAL — In quantum mechanics, the measurement problem is the problem of definite outcomes: quantum systems have superpositions but quantum measurements only give one definite result. The wave function in qua…
https://en.wikipedia.org/wiki/Measurement_problem
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wikipedia NEUTRAL — In quantum mechanics, frequent measurements cause the quantum Zeno effect, a reduction in transitions away from the system's initial state, slowing a system's time evolution. Sometimes this effect is …
https://en.wikipedia.org/wiki/Quantum_Zeno_effect
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wikipedia NEUTRAL — Within quantum technology, a quantum sensor utilizes quantum mechanical phenomena, such as quantum superposition, quantum entanglement, and quantum squeezing, to measure physical quantities. If a quan…
https://en.wikipedia.org/wiki/Quantum_sensor
+ 3 more evidence sources
info
Claim 7: “In the physical system used by the researchers, the "sprinkler" is an electron that can be pushed onto the atom and then removed from it conditionally on the quantum state of the nuclear spin.”
SINGLE SOURCE
While the evidence discusses electrons and nuclear spins in quantum systems, none of the provided search results specifically describe the 'sprinkler' mechanism or the conditional addition/removal of an electron as described in the claim.
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web search NEUTRAL — Sep 18, 2025 ... Each atoms binds separate electrons, whose exchange interaction mediates the nuclear two-qubit gate. We prepare and measure a nuclear Bell state ...
https://arxiv.org/html/2503.06872v2
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web search NEUTRAL — Aug 21, 2025 ... Scanning tunneling microscopy combined with electron spin resonance has enabled control and measurement of individual nuclear spins, but time- ...
https://pmc.ncbi.nlm.nih.gov/articles/PMC12370962/
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web search NEUTRAL — This transfer of a qubit from an NV electron spin onto a nearby nuclear spin also then renders the electron spin available for further manipulation without ...
https://www.sciencedirect.com/topics/chemistry/electron-spin…
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Claim 8: “The work is published in the journal PRX Quantum.”
CORROBORATED
Multiple sources, including a specific mention of the journal PRX Quantum, confirm the research was published there.
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web search NEUTRAL — PRX Quantum is a highly selective, open access journal featuring quantum information science and technology research with an emphasis on lasting and profound impact. The journal expands on the excelle…
https://journals.aps.org/prxquantum/
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web search NEUTRAL — Each box represents a possible quantum state. In the experiment, the “cat” is the nucleus of an antimony atom embedded in silicon. This tiny system can exist in eight different states, offering more s…
https://www.thebrighterside.news/post/quantum-cat-strategy-r…
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web search NEUTRAL — The work is published in the journal PRX Quantum. Having eight different states leaves extra room to detect and correct errors that may occur during the calculation. Improving quantum error correction…
https://phys.org/news/2026-06-dont-cat-smarter-quantum.html
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.