Single qubit coherence time record

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  • Thread starter Dragonfall
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  • #1
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Main Question or Discussion Point

Is it possible yet to store a single qubit for an extended period of time? If I only care about storing a BB84 state, is it possible to take (say) 128 of these single qubit storages? They're not entangled and I don't need to send them through any general quantum circuitry.
 

Answers and Replies

  • #2
Strilanc
Science Advisor
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Storing unentangled qubits is just as hard as storing entangled qubits. You won't be able to store 128 of them anytime soon. Not for more than a tiny fraction of a second, anyways.

Give it another year or five.
 

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