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Rajiv Krishnakumar

@rajivkrishnakumar

I like quantum algorithms โš› Any/all ๐Ÿšน Quantum scientist @ QuantumBasel and QC2, Univeristรคt Basel ๐Ÿ‡ฎ๐Ÿ‡ณ๐Ÿ‡จ๐Ÿ‡ญ Opinions are my own

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21.11.2024
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Latest posts by Rajiv Krishnakumar @rajivkrishnakumar

Thank you for sharing! Is there per chance also a recording of the talk available online?

08.03.2026 19:36 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
A Day in the Life of a Quantum Mathematician with Devika Sharma | Ep. 9
A Day in the Life of a Quantum Mathematician with Devika Sharma | Ep. 9 YouTube video by A Day in the Life

A really lively discussion with the quantum mathematician Devika Sharma! Ranging from error correction topics to taking care of oneself during her free time, Priya and I really enjoyed a bit of insight into what the life of a quantum mathematician is like ๐Ÿ˜Š youtu.be/maXkByXOOuU

08.03.2026 03:34 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Post image

A big shout out to the first author Sparsh Mittal along with Mintu Kumar and Yash Chand for their valuable contributions, and of course Prof. Neel Kanth Kundu for orchestrating the work

19.02.2026 08:27 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

We tested this using indoor localization data (finding a person's location inside a building using signals from WiFi, Bluetooth, and Zigbee)

19.02.2026 08:27 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

The (small but clean) novel contribution that our paper shows is that you can use a very naive method of plucking a few integer Fourier frequencies around zero (e.g. [-1, 0, 1]) as a heuristic and it worked for the cases we tried!

19.02.2026 08:27 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

In more detail - we used the already-known method of taking the partial Fourier series of the quantum layer and keeping only the leading terms. We saw that this did not degrade the performance of the model.

19.02.2026 08:26 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Preview
Experimental Validation of Dequantization of Hybrid Quantum Machine Learning Models Using Classical Surrogates Dequantization of quantum machine learning models is the methodology of creating an equivalent classical model using a partial Fourier series over the classical input variables such that the classical...

Paper on taking the classical surrogate of QML models!

ieeexplore.ieee.org/abstract/doc...

Taking a classical surrogate means we took a hybrid QML model and translated the quantum layer to a "classical surrogate" so that the whole model can be run efficiently on a classical computer.

19.02.2026 08:26 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

This feels similar to when companies started putting wifi to many household appliances... adding risk with no practical benefits

12.02.2026 05:19 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Could the new restrictions be to try and combat the AI slop?

21.01.2026 21:00 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
A Day in the Life of a Quantum Information Theorist with Kishor Bharti | Ep. 8
A Day in the Life of a Quantum Information Theorist with Kishor Bharti | Ep. 8 YouTube video by A Day in the Life

And that's another episode in the bag! This one with Kishor was really nice to hear about his days and his philosophy on how he works on quantum science, and what it takes (including making time for the really important things like family) ๐Ÿ˜
www.youtube.com/watch?v=zqm-...

24.12.2025 17:46 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Asia Pacific QEC Seminars Talks about latest results in Quantum Error Correction.

Kishor + friend's QEC series (18 lectures): youtube.com/@asiapacific...

19.12.2025 14:13 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

It was really fun working with Julian Jang-Jaccard and everyone at the Cyber-Defense Campus๐Ÿ‡จ๐Ÿ‡ญand a shout out to my boss Frederik Flรถther for his comments on shaping this chapter

08.12.2025 08:50 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

The whole book is very understandable to anyone and is ๐—ณ๐˜‚๐—น๐—น๐˜† ๐—ผ๐—ฝ๐—ฒ๐—ป ๐˜€๐—ผ๐˜‚๐—ฟ๐—ฐ๐—ฒ! So if you or anyone you know is interested to learn more about how quantum computing can impact them personally or professionally, I humbly recommend this chapter ๐Ÿ™‚

08.12.2025 08:49 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Preview
Quantum Threats With the recent advancements in quantum computing, there is a threat that today’s widely used digital encryption schemes will become vulnerable to cryptography-breaking quantum algorithms. In pa...

Very excited that the book ๐—ค๐˜‚๐—ฎ๐—ป๐˜๐˜‚๐—บ ๐—ง๐—ฒ๐—ฐ๐—ต๐—ป๐—ผ๐—น๐—ผ๐—ด๐—ถ๐—ฒ๐˜€: ๐—ง๐—ฟ๐—ฒ๐—ป๐—ฑ๐˜€ ๐—ฎ๐—ป๐—ฑ ๐—œ๐—บ๐—ฝ๐—น๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—ณ๐—ผ๐—ฟ ๐—–๐˜†๐—ฏ๐—ฒ๐—ฟ ๐——๐—ฒ๐—ณ๐—ฒ๐—ป๐˜€๐—ฒ is finally out, which includes my chapter on ๐—ค๐˜‚๐—ฎ๐—ป๐˜๐˜‚๐—บ ๐—ง๐—ต๐—ฟ๐—ฒ๐—ฎ๐˜๐˜€:

link.springer.com/chapter/10.1...

08.12.2025 08:48 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Preview
Future of Quantum Computing On Tuesday 26th November 2024, four discussants participated in a moderated virtual panel titled Future of Quantum Computing as one session of the 8th International Conference on Quantum Techniques in...

arxiv.org/abs/2506.192...

26.08.2025 08:34 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
A Day in the Life of an Optics and Photonics Professor with Awanish Pandey
A Day in the Life of an Optics and Photonics Professor with Awanish Pandey YouTube video by A Day in the Life

Really excited to share this chat with Awanish Pandey, an optics and photonics professor at IIT Delhi. Very insightful and fun conversations with a great sense of humour all along :) And of course a shout out to my co-host Priya! Stay tuned for more episodes!

youtu.be/vwoY9OELZco?...

19.08.2025 09:58 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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FLQT 2025 โ€” ASPECTS Fundamental Limits of Quantum Technologies conference, Dublin, 25-29 August 2025

I'll be giving a talk at FLQT next week! www.aspects-quantum.com/flqt2025

Anyone else going?

18.08.2025 05:53 ๐Ÿ‘ 7 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Does this mean the coin flipping guys get to publish a paper too?

(Sidenote: I am unironically a big fan of trickshot videos. The joy in their faces when they finally get it is fantastic!)

05.08.2025 07:52 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

I think a way to fight blog posts is to preach to non-experts to

1. Find the link to the scientific paper in the blog post
2. Upload just the paper (not blog post or any other media) into NotebookLM
3. Ask NotebookLM your questions

It's not perfect but (so far) it's pretty decent!

17.07.2025 17:27 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
A Day in the Life of a Quantum Information Science Professor with Prabha Mandayam | Ep. 5
A Day in the Life of a Quantum Information Science Professor with Prabha Mandayam | Ep. 5 YouTube video by A Day in the Life

Very nice interview with Prof. Prabha Mandayam where she shares with us some fascinating life experiences and insights, like how she got into quantum, what she enjoys most about her job, recent QEC breakthroughs, and more! Very fun, informal and a relaxing listen :)

www.youtube.com/watch?v=nejx...

11.07.2025 12:24 ๐Ÿ‘ 2 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Super interesting! Are there/will there be any talks on this available on youtube?

16.05.2025 11:23 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Nice one ๐Ÿคฃ๐Ÿคฃ alternatively you need to search through 3 items

08.05.2025 19:38 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Thanks Nick, appreciate the shout ๐Ÿ™‚ we're hoping it can entice more people into digging deeper into how to move forward in understanding which (parts of) problems in healthcare/lifesciences quantum algorithms could be have a potential to help out in!

02.05.2025 05:59 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Glad to see our work on potential applications of quantum computing to biomarker discovery out in the @cellpress.bsky.social Patterns journal :)

www.cell.com/patterns/ful...

01.05.2025 17:28 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Looking forward to it coming out!

30.04.2025 10:54 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

It's a word play on "hope"

25.04.2025 04:14 ๐Ÿ‘ 2 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

So your conclusion is that "this suggests that the firewall paradox may be a symptom of the same fundamental issue that leads to the extended Wigner's friend paradox" is bullshit? Or am I misunderstanding?

10.04.2025 06:44 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Preview
Pilot wave theory - Wikipedia

Indeed! I think that's a pretty OG one en.m.wikipedia.org/wiki/Pilot_w...

30.03.2025 13:40 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Oh I didn't know this was an additional feed I could add, this is really neat!

29.03.2025 22:03 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

It's similar on my timeline (not with Tesla specifically but a lot of Trump related posts). My solution is to just stick to the "Following" tab and ignore the "Discover" tab. Unfortunately I only discover new accounts when people I know repost them, so exploration is slow but I'm OK with it for now

29.03.2025 17:52 ๐Ÿ‘ 3 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0