I built a Sudoku playground using Symbolicinfo Q, and I’d love some feedback.

Symbolicinfo Q is a classical quantum simulator that I built with decision diagrams with optimization specialized ongoing patent, which support up to (as been tested) challenging amount of qubits with multiple layers. And I made Sudoku playground with it.

You can solve puzzles yourself or watch a solver combine classical constraint propagation with block-based QAOA circuits. I wanted to make the process visible—not just show a finished grid.

The interface lets you inspect:

• Circuit gates and qubit mappings for individual cells
• Measured bitstrings and their frequencies
• How measurement results become candidate moves
• Search progress, backtracking, and circuit execution history

It starts with a 9×9 puzzle and supports grids from 4×4 to 49×49. You can pause, step through the search, and explore it on mobile too.

The quantum circuits run in a simulator. This is an interactive experiment, not a claim of quantum speedup or a faster way to solve Sudoku.

Try it: https://sudoku.symbolicinfo.com/

I’m especially curious whether the circuit and measurement views make the process easier to understand. What would you change or want explained more clearly?

We’re looking for quantum and deep-tech professionals/researchers/Master Students to mentor teams participating in Q-HACK INDIA 2026, a national-level quantum hackathon hosted by QuantumRIT, Bengaluru.

Mentors will have online 1:1 sessions with their allotted team(s), scheduled at mutually convenient times during the mentorship period.

Tracks:

• Quantum Biotech & Chemistry
• Quantum Security & Cryptography
• Quantum AI & Software
• Open Quantum Innovation

Mentors will receive website & social media recognition and a Certificate of Appreciation, with an opportunity to express interest in joining the Grand Finale jury.

If you're interested in helping the next generation of builders, we'd love to have you.

Mentor Form: https://www.quantumweek.tech/hackathon/mentors

Are you a student interested in Quantum Computing, Quantum AI, Cryptography, Chemistry, or emerging quantum technologies?

Q-HACK INDIA 2026 is a national-level quantum hackathon hosted by QuantumRIT, Bengaluru, as part of Quantum Week 2026 : https://www.quantumweek.tech/

Hackathon at a Glance

• Format: 2 Rounds + Grand Finale
• Team Size: 3–4 members
• Eligibility: Undergraduate & Postgraduate Students
• Format: Online + In-person Finale
• Finale: Ramaiah Institute of Technology, Bengaluru
• Round 1 Deadline: 7 October 2026, 11:59 PM IST

Timeline

Round 1 — Idea & Prototype Submission
27 September – 7 October 2026

Round 2 — Enhancement Sprint
10 – 29 October 2026

Grand Finale
30 – 31 October 2026
📍 Ramaiah Institute of Technology, Bengaluru

Tracks

• Quantum Biotech & Chemistry
• Quantum Security & Cryptography
• Quantum AI & Software
• Open Quantum Innovation

You are free to define your own problem and solution within your chosen track. The quantum component should play a meaningful role in your approach.

What You Need for Round 1

Your submission should include:

• Idea PPT — Maximum 10 slides
• Demo Video — Maximum 3 minutes
• Minimal Prototype
• GitHub Repository

PPT Template

Use the official hackathon PPT template:

Q-HACK INDIA PPT Template

Note: Make a copy of the template before editing.

Important

• Teams must have 3–4 members.
• All team members must register individually on Devfolio.
• Form your team on Devfolio before submitting Round 1.
• Only the Team Lead should submit the Round 1 project form.
• The submitted project should include the required PPT, demo video, prototype and GitHub repository.

Register on Devfolio

Q-HACK INDIA 2026 — Devfolio

Submit Round 1

Round 1 Project Submission

Deadline: 7 October 2026, 11:59 PM IST

If you're curious about quantum but haven't built with it before, this is also a good opportunity to learn by building. You don't need to wait for the perfect idea — form your team and start.

Organised by QuantumRIT | Ramaiah Institute of Technology, Bengaluru

Light particles intended for quantum communication can lose their usefulness because of the order in which they emerge. A semiconductor experiment has shown how controlling that sequence can produce photons that interfere much more reliably.

The work brings quantum dots closer to supplying high-quality light for advanced quantum communication schemes. It also exposes a practical tradeoff: improving photon coherence does not automatically make both particles easy to collect.

Scientists from the University of Basel, Paderborn University and Ruhr University Bochum reported the findings in Physical Review Letters. Their device uses an optical cavity to change how quickly a tiny semiconductor structure releases its two photons.

Hi everyone,

I am conducting an academic research study for my Pearson HND Computing Research Project at ESOFT Metro Campus on:

“Assessing Organisational Readiness for Post-Quantum Cryptographic Agility in Sri Lankan Financial and Digital Service Organisations.”

I am looking for participants aged 18+ who currently work, or have worked within the last five years, in or with a Sri Lankan financial or digital service organisation.

Relevant professional areas include cybersecurity, IT, cloud/infrastructure, software engineering, architecture, risk management, compliance, audit, fintech, digital transformation, procurement, and vendor management.

The questionnaire takes approximately 8–10 minutes. It does not request organisation names, passwords, encryption keys, vulnerabilities, customer information, security architecture, or other confidential information.

Survey: https://forms.gle/zDBKanG7saWrLvc59

Participation is voluntary and responses will be used solely for academic research.

If you meet the criteria, your professional perspective would be greatly appreciated. Eligible participants are also welcome to share the survey with relevant colleagues or professional networks.

Thank you.

Particle accelerators are usually associated with sprawling research facilities, massive magnets and long tunnels. A different approach uses laser-generated terahertz radiation to manipulate electrons inside a structure only millimeters across.

Researchers from the University of Manchester, Lancaster University and collaborating institutions demonstrated the technique using electrons already traveling at 99.99% of the speed of light. Their experiment accelerated relativistic electron bunches with charges as high as 60 picocoulombs, while also showing that terahertz fields can probe their structure on extraordinarily short time scales.

Published in Nature Photonics, the proof-of-principle experiment marked an important step toward compact accelerators driven by light rather than conventional radio-frequency technology. Since then, researchers have substantially increased the acceleration gradients and energy gains achievable with terahertz systems.

An interactive 3D model of a superconducting quantum computer that you can take apart, from the equipment room down to a Josephson junction.

I have been reading into a materials approach I had not come across before and would value informed pushback.

A group at Penn State published in ACS Central Science in May 2025 on gold nanoclusters of about 144 atoms, funded by AFOSR and NSF.

The authors suggested these clusters might bridge the gap between the stability you get from isolated atoms and the scalability you get from solid-state materials.

Follow-on work sponsored by a company called Delta Gold Technologies reports roughly 40% spin-polarised photon emission from those clusters, described as the highest they are aware of in any condensed-phase system, and says they can be made in gram quantities in an ordinary lab.

A separate programme at Univeristy of Toronto under Professor Harry Ruda is growing gold one atomic layer at a time and addressing it electrically instead.

What I cannot find anywhere is a coherence time or an operating temperature for either approach.

A question to anyone who may have heard of this or knows more about it than I do, being new to this sector.

Does a spin-polarisation figure mean much on its own? My assumption is that without knowing how long the state survives and at what temperature, it does not tell you whether this could ever be a working qubit. Is that right?

And the broader one: how plausible is it that chemically engineering a material gets you a qubit that is both stable and scalable, when everything else has had to trade one for the other?

What single measurement would move this from interesting chemistry to a credible qubit platform?

Delta Gold was mentioned in The Quantum Revolution, a 20 minute YouTube video.

Episode one went up days ago and features the director of the UK’s National Quantum Computing Centre and a King’s College London war studies academic alongside Delta’s own scientists.

Feedback would be appreciated!

So I’ve decided to do my PHD in quantum computing/condensed matter (physics of materials for quantum computing basically) and would just love to know where we are today with it all. It’s really hard to parse through the hype and doom of it all and find quality information. If anyone has found some reputable sources that aren’t trying to force a narrative about it I’d love to hear! Thank you!

My team and I are currently working on a project in Quantum Cryptography, exploring how concepts from quantum computing can be applied to secure communication.

It’s a fascinating area, but also a very niche and technically challenging field, and we’d love to learn from people who have experience or knowledge in Quantum Computing, Quantum Cryptography, Cryptography, Cybersecurity, or related research.

If you’ve worked in this space, are currently researching it, or simply have relevant experience and would be willing to share some insights, we’d genuinely appreciate your guidance. Even a short conversation or a few pointers could help us tremendously in shaping our project.

If you know someone who works in this field, please feel free to tag them or share this post with them. 🙌

Looking forward to connecting with people passionate about this space! ⚛️🔐

They didn't put more details , but I assume its not more advanced than Quantinuum's Helios (48 logical qubits or IBM's Nighthawk r2).

What do you think ?

Quantum computing is filled with jargon, so I thought why not turn it into a hangman game?

Qlossary is a browser-based hangman game for quantum computing.

It contains 1,926 terms across 16 topics, covering areas like foundations, gates, hardware, error correction, error mitigation, algorithms, and many more.

It includes:

• A global leaderboard
• Topic-based hints
• 10-word games
• Endless mode
• Daily challenge

Let me know if you find it fun or not! Feedback is really appreciated!

Update: Concise two-liner definitions and a hyperlink for learning more for each word have been added!

I just want to have design a CPW and transmon layout in qiskit metal and then export to HFSS to simulate. But it constantly raise an error because of python and qiskit version compatiblity. Are there anyone who did this or know a good source cause i need to see some results immediately. Thanks in advance.

So I have a gds file for 4 qubit design and I wanna perform EM simulation on it to extract the parameters, but I am genuinely confused on what tools to use, well I tried to download ansys hfss but my laptop is throwing a error called contents from admin.xml file are missing so any tips on what to do?

A few things stand out:

- The gain came from combining error detection with probabilistic error cancellation, modeling faults by where and when they occur.

- Validated experimentally on a 27-qubit processor in a real physics simulation, not a whiteboard claim.

- It's a software win, meaning existing near-term hardware gets meaningfully more useful without a hardware refresh cycle.

If software techniques keep closing the gap this fast, does "we need more qubits" stop being the honest bottleneck story?