Whether Bitkoin emergence of Quantum computer will kill?

Many see in Quantum computer threat for Bitkoin. Two scientists counted everything: whether there is at Quantum computer an advantage before classical mayner? Whether and if yes, that it poses threat for Bitkoin? Whether Quantum computer future Bitkoin threaten? Whether there will be once Quantum computer which will devastate all purses and namaynit all Bitkoin at once with help the...