#superconducting

[theeliasarchives]

Finally listening to all of The Superconducting Supercolliders work..

Designations has me in a chokehold.

(This music is so good, though???)

[johniac]

SciTech Chronicles. . . . . .May 20th, 2025

[govindhtech]

Quantum AI: Superconducting Qubits Work And Key Challenges

Google Requests Industry-Academia Collaboration on Quantum Computing Scaling

Google Quantum AI

Rethinking materials science and system integration is necessary to build a fault-tolerant quantum computer using superconducting qubits, according to Google Quantum AI researchers. The researchers explained the complexity of the challenge and the technological hurdles that must be overcome before these devices can outperform traditional supercomputers on real-world workloads in a Nature Electronics article.

Modern qubit creation uses superconducting technology. Fabrication processes like those employed in the semiconductor sector provide accurate design and integration. According to Anthony Megrant and Yu Chen of Google Quantum AI, moving from hundreds to millions of qubits would need improvements in system design, hardware testing, and materials. The study indicated that expanding cryogenic infrastructure, precise component tuning, and material defects remain challenges.

The researchers argue that creating a fault-tolerant quantum computer using superconducting qubits requires millions of pieces and complex cryogenic systems, like CERN or LIGO. Many components, from control electronics to high-density wiring, require years of concerted development before commercialisation.

Hardware Improves, But Challenges Remain

Google Quantum AI's roadmap includes six fault-tolerant quantum computer benchmarks. In 2019 and 2023, quantum supremacy and hundreds of qubits were achieved. The following four aim to build a long-lasting logical qubit, a universal gate set, and large, error-corrected machines. Qubit coherence times and gate error rates have improved steadily. Researchers caution that scalability and performance advances must match to advance.

Unlike naturally similar atoms, superconducting qubits are manufactured and function differently. This indicates that each qubit needs tweaking.

We can adjust and engineer superconducting qubits' coupling strengths and transition frequencies, like artificial atoms. Its reconfigurability, especially in integrated systems, has contributed to its high performance.

This flexibility allows engineers to avoid qubit crosstalk, but scaling gets harder and more expensive as control hardware and software are added.

Two-level systems, small flaws in qubit materials, enhance complexity. These faults might wander a qubit's frequency, reducing fidelity and introducing errors. After decades of awareness, little is known about the physical origins of these illnesses, making their elimination difficult. Google researchers said physics, chemistry, materials science, and engineering are needed to understand and fix these issues.

Research on Material and Fabrication Redesign

Contamination or chip fabrication faults may cause two-level systems. Quantum chip production must be altered to eliminate them. Organic materials in existing processes may leave impurities. New superconductors and cleanroom techniques may be valuable, but they need considerable testing.

Researchers say present tools for describing material defects are inefficient. Qubit sensors generate sparse data and take a long time. The study recommends faster, specialised techniques to assess qubit materials during manufacturing and connect surface features with performance issues.

Standardised sensors like modified transmon qubits for ambient interference may help establish a quantum industrial testing framework. Projects like the Boulder Cryogenic Quantum Testbed provide hardware developers standardised measuring services to reduce this gap.

Some mitigating measures aren't scalable

Researchers use mitigation measures to reduce transitory defects. Frequency optimisation, where computer algorithms find the best coupler and qubit operating frequency, is popular. The technique works well for small systems but requires complex modelling and calculation, which may not scale.

Electric or microwave fields can modify frequency. These have limited flexibility or require more hardware, causing large-scale system issues again.

Developing Supercomputer-Scale Systems

A fault-tolerant quantum computer must be as large as modern supercomputers to handle millions of components at near absolute zero. Building such systems takes redesigning.

Since cryogenic devices can only carry a few thousand qubits and need days to cycle between hot and cold states, Google recommends a modular design. The system would be contained in smaller, independent modules rather than one massive machine. This technology reduced maintenance time and cost and allowed module testing and replacement without shutting down the system.

Modularity works only if performance demands can be separated from system-wide goals to particular modules. Testing so many components requires new high-throughput methods. The testing infrastructure, originally designed for conventional devices, is not yet suitable for quantum technology, especially at millikelvin temperatures.

Integrating reveals new issues

New issues occur as the profession grows. As the system expands, parasitic couplings and control signal interference become more relevant.

Large processor studies like Sycamore and Willow have found new defects that affect many qubit groups. Leakage errors can cause system-wide problems, impairing error correction. Leakage errors arise when qubit states leave the computation space.

Though rarely recognised as a noise source, cosmic rays are a concern. High-energy particles may interact with qubits in large-scale systems, reducing performance. Research groups are developing leakage removal circuits and junction gap engineering to combat these emerging error causes.

[electronics-system]

Superconducting wire is composed of superconductors such as niobium-titanium. It displays zero electrical resistance when cooled below its transition temperature. Currently, high temperature superconductors such as yttrium barium copper oxide (YBCO) tend to offer greater advantages over copper and aluminum such as higher maximum current densities and zero power dissipation. However, superconducting wire possess several disadvantages such as the cost of refrigeration of the wires to superconducting temperatures, problems associated with quenching of wire, and cost of wire materials and construction.

[mthomasapple]

"Superconductor"? Color me skeptical

Superconductors are materials that allow electrical current to flow with no resistance, a property that would revolutionize power grids where energy is lost in transmission as well as advance fields such as computing chips, where electrical resistance acts as a speed…

[unbfacts]

[mindblowingscience]

Scientists have found a key process required for superconductivity occurring at higher temperatures than previously thought. It could be a small but significant step in the search for one of the "holy grails" of physics, a superconductor that operates at room temperature. The discovery, made inside the unlikely material of an electrical insulator, reveals electrons pairing up at temperatures of up to minus 190 degrees Fahrenheit (minus 123 degrees Celsius) — one of the secret ingredients to the near-lossless flow of electricity in extremely cold superconducting materials. So far, the physicists are baffled by why this is happening. But understanding it could help them find room-temperature superconductors. The researchers published their findings Aug. 15 in the journal Science.

Continue Reading.

[materialsscienceandengineering]

Magnesium becomes a possible superconductor near the 2D limit

Magnesium is a common chemical element, an alkaline earth metal, which is highly chemically reactive and is very light (even lighter than aluminum). Magnesium is abundant in plants and minerals and plays a role in human physiology and metabolism. In the cosmos, it is produced by large aging stars. Among its physical properties, while it is a good conductor of electricity, magnesium is not known to be a superconductor. Superconductors are particularly promising materials with the potential to revolutionize energy transmission, medical imaging, and quantum computing, and are defined by their ability to conduct electricity without resistance below a certain critical temperature.

Read more.

[persistentinterests]

Otto Van Von Veen,

Little Clone Baby

and

Ancient Curse

have all very different vibes but occupy the same space in my heart because they are bangers and I can't believe they exist. Like?? The people singing them don't so like how come?? A great mystery

[dandelion-wings]

follow the advice of the game itself and bring my highest EM characters to the Spire of Solitary Enlightenment: suffering, dying

bring Lisa and Eula to the Spire of Solitary Enlightenment: fun and joyful murder!

[saintajax]

When in doubt hyperbloom it out that’s my motto

[justrandomselfships]

ANOTHER CUDDLE PIECE DONE!

Commission status is in my pinned post! BUT if you'd like something similar to this it has seperate rules and pricing! (it's cheaper)

[yzxia]

if my sweet bwean and her beloved suguru were genshin characters, what would their powers be? (is ‘vision’ the proper term?)

OOOOOO!! this is so exciting, and you are correct beloved :3c they are called visions! i get the feeling your bwean wouldn’t have a vision at all.. at least not yet. i believe visions are given to those who have something to strive for, and feel passionately about their ambitions (not sure where i land on this spectrum yet..) but i think suguru would have a cryo vision ❄️ hmm, it’s been a while since i’ve played genshin but i believe this fits him best and was given to him post-defection. he finds resolution within the turmoil in his mind, and follows his path even if he is on his own, completely isolated.

[relto]

had to redo my cryo safety and the training mentioned the incident at the lhc in 2008, now im obsessed with the pictures of the damage. spilled machine guts.

(source and more pictures)

[onlytiktoks]

https://www.wsj.com/science/physics/microsoft-quantum-computing-physicists-skeptical-d3ec07f0

[kaeyapilled]

ragbros melt team save me. ragbros melt team. save me ragbros melt team