Ironically it seems we'll get quantum computers to work at about the
same time we realize they're not very useful.
Brent
On 9/29/2025 6:20 AM, John Clark wrote:
*There have been some important developments in the field of quantum
computing during September, for example:*
*A 3,000 quantum-bit system capable of continuous operation*
<https://news.harvard.edu/gazette/story/2025/09/clearing-significant-hurdle-to-quantum-computing/>
*In their paperfrom the September 15, 2025 issue of the journal Nature:*
*Continuous operation of a coherent 3,000-qubit system
<https://www.nature.com/articles/s41586-025-09596-6>
*
*
*
*The authors say:*
/*"**Our results pave the way for realization of large-scale
continuously operated atomic clocks, sensors, and fault-tolerant
quantum computers. [...] **We demonstrated the continuous operation
with a 3,000-qubit system,but it's also clear that this approach will
work for much larger numbers as well.[...] We're showing a way where
you can insert new atoms as you naturally lose them without destroying
the information that's already in the system."*/
/*
*/
*There is a second paper of interest published in Nature on September
10. *
*
*
*Probing the Kitaev honeycomb model on a neutral-atom quantum
computer* <https://www.nature.com/articles/s41586-025-09475-0>
*
*
*Researchers found a way to configure atomic arrays so they simulate
quantum magnets, this allows them to change the connectivity between
quantum processors during computation. One of the authors of the paper
said "/We can literally reconfigure the atomic quantum computer while
it's operating. Basically, the system becomes a living organism/."*
*
*
*And there is a third paper from Nature published on September 24,
a team demonstrated a new method of quantum error correction:*
*Low-overhead transversal fault tolerance for universal quantum
computation <https://www.nature.com/articles/s41586-025-09543-5> *
*
*
*The lead author said he thinks with this new method it should be
possible to build a quantum computer that can execute billions of
operations and continue running for days and "/Realizing this dream is
now in our direct sight for the first time, ever. One can really see a
very direct path towards realizing it/"*
*
*
*In a fourth development the quantum computer company "Alice and Bob"
announced a few days ago that they have produced superconducting
"quantum cat "cubits that remain resistant to flip errors for more
than an hour, the previous record was seven minutes. *
*Alice & Bob Shares Preliminary Results Vastly Surpassing Previous
Bit-Flip Time Record*
<https://alice-bob.com/newsroom/alice-bob-surpasses-bit-flip-stability-record/>
*John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>*
7bb
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