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Quantum computer is useless
(Fig.1) Each atomic two energy states are used as a qubit 0 or 1 value.
The 2nd, 6th 8th, 3rd-last paragraphs of this hyped news (9/24/2025) say
"Caltech physicists have created the largest qubit array ever assembled: 6,100 neutral-atom qubits (= useless, still far from millions of qubits required for a practical quantum computer ) trapped in a grid by lasers"
"Even with more than 6,000 qubits (= quantum bits ) in a single array, the team kept them in superposition for about 13 seconds (= too short to be useful )" ← fake news, because superposition = a dead-and-alive cat in fantasy parallel universes cannot be observed.
"The ability to shuttle qubits is a key feature of neutral-atom quantum computers that enables more efficient error correction compared with traditional, hard-wired platforms like superconducting qubits." ← fake news, atomic qubits are inferior
"Looking ahead, the researchers plan to link the qubits (= so qubits are still Not linked in this research = useless ) in their array together in a state of entanglement"
↑ So this research just measured each atom independently without linking multiple atomic qubits. ← Different qubits or bits are Not connected, so still Not a computer.
This-3rd-paragraph says
"The researchers designed the qubits to have properties exceptionally suitable for use in computations,.. although they haven't yet performed any." ← No quantum computation, after all.
↑ This research paper ↓
p.1-abstract says "We show room-temperature trapping lifetimes of ∼23 minutes" ← so these 6100 neutral atomic qubits unstably trapped in laser were lost in just 23 minutes. ← useless for quantum computers.
p.3-left-2nd-last-paragraph says "We find that each site has a loading probability of 51.2%" ← about 50% error rate of loading atoms onto laser sites. ← too inaccurate
p.4-right-Qubit coherence and p.5-Fig.4-a shows their so-called (fictional) superposition means each atomic qubit changed between two hyperfine energy states 0 and 1 periodically by light pulse (= called Rabi oscillation ) instead of each qubit being two 0 and 1 states simultaneously (= which cannot be confirmed )
p.38-1st-paragraph says "To implement two-qubit gates in the hyperfine-based qubits, we plan (= still unrealized ) to utilize Rydberg interactions"
↑ So this research focuses only on keeping about 6100 atomic qubits unstably-trapped in laser (= lifetime is only 23 minutes ) without any quantum computation needing two-qubit gate operation connecting different qubits.
↑ 6100 qubits are Not connected with each other, which is still Not a computer at all.
(Fig.2) Neutral atomic qubits are too error-prone to calculate anything.
The 1st, 2nd-last, last paragraphs of this hyped news (9/17/2025) say
"Neutral atoms,... but achieving practical scalability requires overcoming challenges in how qubits interact and become entangled (= entangle means just 2- qubit gate operation irrelevant to fantasy quantum mechanical superluminal spooky action )"
"Realized on a system hosting 114 neutral atom qubits (= still far from practical millions of qubits ),.. The team successfully demonstrated a logical qubit realization of Shor's Algorithm (= fake news ),.. They also experimentally realized the initialization of a promising quantum error correction code (= fake news, again ). "
"Future work will (= still useless ) focus on extending the system"
↑ This research paper ↓
p.1-right-last says "This constitutes the first demonstration of Shor's Algorithm on logical qubits, although we emphasize that the pre-compiled circuits are unscalable" ← Fake unscalable Shor's algorithm called complied version.
p.2-right-3rd-paragraph says "code that encodes 2 logical qubits within 4 physical qubits" ← This research used only 4 (physical) qubits divided into two logical qubits (= so just 2 qubits = 2 bitstring = 00 was used for fake Shor's algorithm, which are too small number of qubits to factor anything ).
p.3-left-C post-processing says
"Once the measurements are collected from hardware,
they are post-processed"
"Loss detection: A result is discarded whenever an
atom is not detected (= atoms were lost ) at an expected site during measurement.
" ← Results were discarded without error correction
p.4-left-1st-paragraph says " Such precompiled constructions are inherently unscalable because they depend on prior knowledge that is effectively equivalent to knowing the answer in advance" ← So this fake precompiled Shor's algorithm needed to know answers in advantage instead of really factoring (= useless ).
p.4-A logical circuits showed this research used only 4 ~ 6 (physical) qubits divided into only 2 or 3 logical qubits (= just 2 ~ 3 bitstring 00 ~ 000, which cannot calculate anything ).
The above same paper's p.5-Fig.2 (= middle, shot discard % ) shows this fake Shor's algorithm with only 4 ~ 6 qubits discarded erroneous results (= 10 ~ 80 % results were discarded without error correction ), which is too high error rate to be practical.
As a result, today's quantum computers and neutral atomic qubits are useless, too error-prone with easily-lost atoms.
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