Tamás Kriváchy's Avatar

Tamás Kriváchy

@krivachytamas

quantum information, networks, machine learning and everything in-between @ ETH Zürich Previously Barcelona, Vienna, Geneva, Zürich https://krivachy.xyz/

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14.01.2025
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Latest posts by Tamás Kriváchy @krivachytamas

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The Qalypso School on Quantum Science in Malta returns for its 3rd edition Aug 31 - Sep 4 this year! 🏖️

We have a great line up of lecturers covering Quantum Optimisation, Quantum Thermodynamics and Quantum Gibbs Sampling.

Pre-registrations opens today at forms.gle/3NkMJ3Br9V8b...

Do Share!

04.03.2026 07:32 👍 19 🔁 9 💬 0 📌 0

image from Gemini Nano Banana Pro for prompt:
"Create an image of the number 2026 but make it look like AI slop on purpose"

06.01.2026 15:57 👍 1 🔁 0 💬 0 📌 0
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All in all, it's great to be more and more integrated in the community - it also helps me to be more balanced, and less focused on just some numbers.

🫶 Thanks to all colleagues, it's great to work with you all.

🎆 Happy New Year!!! 🎆

06.01.2026 15:57 👍 2 🔁 0 💬 1 📌 0

E.g....
- invitation to give a talk at a conference
- invitation to be a PhD defense jury member
- invitation to give a lecture at a summer school
- having my research covered by my institute's website
- having my (side-project) research covered by news reporters
- editor's recommendation

06.01.2026 15:57 👍 2 🔁 0 💬 1 📌 0

Citation-count-addiction is horrible, but it's one of the few points of feedback that young researchers get.

I'm quite grateful for what 2025 brought, particularly more diverse feedback/verification from the community; things I didn't really expect would come my way:

06.01.2026 15:57 👍 3 🔁 0 💬 1 📌 0

Well deserved!! Congratulations :) :)

27.12.2025 05:23 👍 1 🔁 0 💬 0 📌 0

I'm also surprised by this. Not too issues in this need peer reviewing.... They are just there. On the website. In the API.

Anyway, they probably just want to buy some time before giving a full statement... I guess

14.11.2025 20:26 👍 1 🔁 0 💬 0 📌 0

🚩 Our recent work on noise-robustness in a triangle quantum network got covered by ICFO. :)

👇 Have a look below

or check out the full article: arxiv.org/abs/2503.24213

13.11.2025 12:38 👍 6 🔁 0 💬 0 📌 0
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Bug in Springer Nature metadata may be causing ‘significant, systemic’ citation inflation Millions of researchers could be affected by a “dramatic distortion of citation counts” likely caused by flaws in how the academic publishing giant Springer Nature handles article metadata, accordi…

Luckily it's getting some press coverage

retractionwatch.com/2025/11/11/b...

12.11.2025 10:15 👍 6 🔁 1 💬 1 📌 1

A great read by Retraction Watch.

✅ Nice to see that some Article 1 authors, McCoy et al., actively tried to get help from Springer Nature to fix the incorrect citations to their paper.

😐 Seems like Scopus and Web of Science also have the distorted citations.

12.11.2025 10:14 👍 3 🔁 1 💬 0 📌 0

Delighted to see the work covered here!! Great write-up in my opinion.

11.11.2025 20:40 👍 4 🔁 0 💬 0 📌 0

👍 a pleasure

I truly wonder how many people noticed over the past 14 years that something is off :D

I think many people might have noticed that the "This article is cited by" section is sometimes ... a bit off. But not sure how many api users there are at all.

06.11.2025 12:53 👍 1 🔁 0 💬 0 📌 0

Thanks for pointing this out!

Yes, it seems that there are mismatches in these things even internally within Springer Nature.

Great to see Zotero community actively finding and patching these things where they can. :)

05.11.2025 09:20 👍 3 🔁 0 💬 0 📌 0
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Incorrect Citation Association for Articles in Online-Only Springer Nature Journals We show that citation metrics of journal articles in many of the online-only Springer Nature journals and associated ones, such as Scientific Reports, Nature Communications, Communications journals, a...

Thx for the read. Share if you care. Read the article, especially plots and screenshots.

scirate.com/arxiv/2511.0...

🙏

And most importantly, double check your References!!

04.11.2025 15:58 👍 8 🔁 0 💬 1 📌 0

📚Journals affected? Thousands

📝Articles affected? Hundreds of thousands or even millions

🧑‍🔬Authors affected? Millions

⏰Since when? Most probably since 2011, when the API was released.

04.11.2025 15:58 👍 4 🔁 0 💬 1 📌 0
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This leads all studied scientific reference databases to have incorrect references...

including the journal's own websites!! (check "This article is cited by" section for any article 1)

Article 1s have multiple std devs more citations than others, across many years and sources.

04.11.2025 15:58 👍 4 🔁 0 💬 1 📌 0

So:

❌ No article number returned by API.

❗️"Number" 1 returned for almost all articles.

‼️ Page Number 1 returned for ALL articles.

✅A recipe for disaster? Yes

04.11.2025 15:58 👍 3 🔁 0 💬 1 📌 0
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📜Wait but there is PAGE NUMBER, isn't that good?

Nope.

In online-only Springer Nature journals, ALL articles are assigned a starting page number of 1.

Also, many are assigned an Issue Number of 1 (see "number" field). Almost all these journals have only one issue per volume

04.11.2025 15:58 👍 2 🔁 0 💬 1 📌 0

What's going on????

Well, it turns out if you request article metadata in json format via the SprinerLink API of Springer Nature, then you get
- DOI
- title
- authors
- year
- volume
- page number
- ....

🤯 BUT NO ARTICLE NUMBER!!! 🤯

04.11.2025 15:58 👍 4 🔁 1 💬 1 📌 0
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Another weird thing: if we plot the citation count histograms of Nature Communications articles published on January 2nd 2025, we see the following.

The one article having about 10x the citations of other articles of the same age?

Article #1.

04.11.2025 15:58 👍 3 🔁 0 💬 1 📌 0
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5️⃣/🔟 In Scientific Reports, 5 of the top 10 most cited articles have an article number of 1.

5️⃣/🔟 In Nature Communications the same: 5 of the top 10 are article 1s.

Coincidence? 👇
scirate.com/arxiv/2511.0...
I think not.

04.11.2025 15:58 👍 31 🔁 14 💬 5 📌 9
Closing the Detection Loophole in the Triangle Network with High-Dimensional Photonic States Bell nonlocality without input settings, .g., in the triangle network, has been perceived to be particularly fragile, with low robustness to noise in physical implementations. Here, we show to the con...

I'm glad to say this recently found a home in PRL after a very enlightening publishing process :)

doi.org/10.1103/nwzw...

28.10.2025 08:21 👍 2 🔁 0 💬 0 📌 0
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What a pleasure to teach in Gdansk at the Frontiers of Machine Learning in Quantum Technologies 2025 Summer School :)

It's a first for me, but really enjoying. Amazing students. I was lucky enough to see their flash presentations as well.

Thx and congrats to the organizers.

03.09.2025 08:16 👍 3 🔁 0 💬 0 📌 0
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📣 Calling young quantum researchers!

Join us at #YQIS25 in Barcelona — a conference by young scientists, for young scientists. Present your work, connect, & help shape the future of quantum information science!

Register now 👉 icfo.eu/event/4000/8...
📅 Register by August 15.

14.07.2025 07:57 👍 0 🔁 1 💬 0 📌 0
8th International Conference for Young Quantum Information Scientists | Quantiki

8th International Conference for Young Quantum Information Scientists

www.quantiki.org/conference/8...

16.06.2025 13:53 👍 6 🔁 5 💬 1 📌 0
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Of course I lost my poster along the way, so I improvised a bit :D

01.07.2025 15:07 👍 3 🔁 0 💬 1 📌 0
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Man, CEQIP venue is just another level. Amazing to be here :)

01.07.2025 12:11 👍 7 🔁 0 💬 1 📌 0
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Closing the detection loophole in the triangle network with high-dimensional photonic states Bell nonlocality without input settings, e.g. in the triangle network, has been perceived to be particularly fragile, with low robustness to noise in physical implementations. Here we show to the cont...

Preprint out at
arxiv.org/abs/2503.24213
Check it out :)

07.04.2025 11:47 👍 2 🔁 0 💬 1 📌 0

This helps to close the detection loophole in experiments, where up to here people had to do global post-selection to keep only rounds when all photons arrived.

Using heralding information from an SPDC source for example, we show how this detection loophole can be closed.

07.04.2025 11:47 👍 1 🔁 0 💬 1 📌 0
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not only tariffs are rising... but also number of photons ;)

We found a simple setup for nonlocality in the triangle using 2-photon sources that is ~50% robust to photon loss, vs. the ~5% that we had for single photon sources.

07.04.2025 11:47 👍 4 🔁 1 💬 1 📌 1