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My question is somehow related with a previous one: What is the most optimistic perspective of room-temperature solid-state QC?.

Regarding solid-state qubits,

  • What is the highest temperature at which the simplest quantum logic operation has been performed? Let's say: initialization, arbitrary rotation and measuring, repeated to have enough statistics in order to verify a good fidelity. In which solid-state system has this happened?
Sanchayan Dutta
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SalvaCardona
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1 Answers1

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I think your reference has the answer: nitrogen vacancy centers in diamond, where you can do one qubit gates at room temperature. In fact, even higher temperatures are possible, but you will have to play a tradeoff between fidelity and temperature at some point.

That said, NV centers are not scalable, and I don't think more than 2 qubits will ever be really possible due to the physical problems with interacting immobile NV centers which are randomly distributed.

Dr. T. Q. Bit
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