News Intel Announce 'Tunnel Falls' Quantum Research Chip

Thanks for the article. Nice read.

I presume Intel used the D1 fabrication facility for this ? They can further improve the performance of Tunnel Falls and integrate it into its full quantum stack with the Intel Quantum SDK.

Still a lot of catch up to do, since Intel's biggest rivals, IBM, already offers multiple 127-qubit quantum computers for research and commercial use, with a 433-qubit machine up and running. 433, jeeze ? !

And the next logical step for Intel would be to create a 2D spin qubit device with the qubits arranged in a grid more like.

IMO, with Intel's expertise in material science and relationships with equipment vendors, allows them to leverage purified Silicon-28 isotope on their planar Si/SiGe heterostructure in the device as opposed to natural silicon which has a mixture of other isotopes including Silicon-29 and Silicon-30.

This won't make a HUGE impact though, but the advantage of Silicon-28, unlike the other isotopes, is that it has zero nuclear spins. For quantum, this CAN make a big difference, because it enables a significant increase in coherence time which will decrease the error rates and improve the accuracy of the calculation.

That also suggests Intel is not yet ready to freeze a single prototype design for exploration by a wider software developer community. As with most qubit modalities, semiconductor-based spin qubits can be implemented in many ways.

As we all know, the barebones tech is being able to locate single electrons in isolated wells and to be able to control their spins so as to encode information in a quantum state (via recent paper, Quantum Dots/Spin Qubits).

But it turns out there are 3 more approaches to making silicon spin qubits, including the Loss-DiVencenzo configuration, the Single-Triplet (S-T0) configuration, and Exchange-only.

7VMSIFm.png


OqObSME.png
 
Last edited by a moderator:
Maybe one day we can use "QPU" on our desktop to play high end Games on 32 100K resolution. 😀
 
Last edited by a moderator:
Choo, choo ?

BTW, after going through some of the published papers, and findings, it appears that using the chip, however, still requires hooking individual chips up to a PCB and getting it down to near absolute zero degrees in a dilution refrigeration system.

Intel had to develop a cryogenic probing tool to test the chips at temps approaching 0K kelvin, but similar to CMOS logic process it showed voltage uniformity.

This can also place a bottleneck on testing. Though, Intel claims 95% yield rate across the wafer and voltage uniformity, which is pretty decent IMO, and each wafer provides more than 24,000 quantum dot devices.
 
Last edited by a moderator:
  • Like
Reactions: shoddyyMic1
YES, Heat is the enemy no 1.

Heat creates error in the qubits that make a quantum computer tick, scuttling the operations the computer is carrying out. So quantum computers need to be kept very cold, just a tad above absolute zero.

So to keep systems in a quantum state, designers have to minimize the risk of anything disrupting the fragile position. The slightest temperature increase can mean that atoms and molecules move around too much, potentially causing a quantum bit (qubit)'s voltage to spike, and flip from one quantum state to another.

Just few months back, MIT researchers developed a NEW wireless communication system that enables a quantum computer to send and receive data to and from electronics outside the refrigerator using high-speed terahertz waves. Interesting concept, but hard to implement that easily.

 
By the way, according to Chris Monroe, Chief Scientist at IonQ, Intel should take note, 'cause competing technologies including trapped-ion qubits from the likes of IonQ, have also been getting more attention.

Check out the latest latest interview here, dated June 15, 2023. He says, this technology can seem as illusory as a "Schrodinger's cat". This slipped under my radar.

 
Last edited by a moderator:
Choo choo!

Choo, choo ?
All aboooooaaaaard, the HYPE train!
I read once that quantum computing requires insane amounts of super-cooling, and that realistically, you'll never see desktop quantum supercomputer, but... a man can dream.
Yeah, way back when they needed a vacuum for each bit of memory and for each transistor of a computer, it would sound crazy to them that you would be able to do it without one.
Now that doesn't mean that there has to be a way to make QC work in less extreme temps but you never know until you find out.
 
By the way, according to Chris Monroe, Chief Scientist at IonQ, Intel should take note, 'cause competing technologies including trapped-ion qubits from the likes of IonQ, have also been getting more attention.

Check out the latest latest interview here, dated June 15, 2023. He says, this technology can seem as illusory as a "Schrodinger's cat". This slipped under my radar.

Quite interesting to know about IonQ. It's definitely an illusion of a Schrodinger's cat. Have they given a proper name for this trapped ion tech ?
 
BTW, after going through some of the published papers, and findings, it appears that using the chip, however, still requires hooking individual chips up to a PCB and getting it down to near absolute zero degrees in a dilution refrigeration system.

Intel had to develop a cryogenic probing tool to test the chips at temps approaching 0K kelvin, but similar to CMOS logic process it showed voltage uniformity.

This can also place a bottleneck on testing. Though, Intel claims 95% yield rate across the wafer and voltage uniformity, which is pretty decent IMO, and each wafer provides more than 24,000 quantum dot devices.
Agree. I wouldn't be surprised if they reach zero kelvin since heat is a big of an issue. But regardless voltage uniformity is there. 95% yield rate is not bad either.
 
The yield rate is actually a lot better than before though, and it's definitely improving.