QC is unlikely to become practical until it can be practiced at room
   temperature. This almost surely means abandoning designs based around
   electrons. Instead, the solutions might lie in the nucleus perhaps
   related to NMR.

   On Thu, Nov 4, 2021, 8:40 PM professor rat <[1]pro2rat@yahoo.com.au>
   wrote:

     The decoherence of quantum bits, or qubits for short, is one of the
     main hurdles in the construction of practically usable quantum
     computers.
     [2]https://www.miragenews.com/material-for-future-quantum-computers-
     661583/
     Decoherence is a consequence of the unavoidable interaction of
     virtually all physical systems with their environment.

References

   1. mailto:pro2rat@yahoo.com.au
   2. https://www.miragenews.com/material-for-future-quantum-computers-661583/