WHY "MORE QUBITS" ISN'T THE HEADLINE THAT MATTERS 🧯
A plain-English explainer for reading past the hype:
Today's qubits are noisy — they lose their quantum state (decohere) in tiny fractions of a second, and every gate adds a little error. Run a long computation raw and the answer is mush.
The fix is error correction: weave many physical qubits together so they act as ONE reliable "logical" qubit. Depending on hardware quality, one logical qubit can cost hundreds or thousands of physical ones.
So when a headline says "company X hits N qubits", the questions that matter are:
• How good are the gates (error rates)?
• How many LOGICAL qubits does that translate to?
• Can they keep a logical qubit alive longer than the physical ones it's made of?
That last one — logical beating physical — is the real milestone the whole field is racing toward.
A plain-English explainer for reading past the hype:
Today's qubits are noisy — they lose their quantum state (decohere) in tiny fractions of a second, and every gate adds a little error. Run a long computation raw and the answer is mush.
The fix is error correction: weave many physical qubits together so they act as ONE reliable "logical" qubit. Depending on hardware quality, one logical qubit can cost hundreds or thousands of physical ones.
So when a headline says "company X hits N qubits", the questions that matter are:
• How good are the gates (error rates)?
• How many LOGICAL qubits does that translate to?
• Can they keep a logical qubit alive longer than the physical ones it's made of?
That last one — logical beating physical — is the real milestone the whole field is racing toward.
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