IBM Q System One is a first quantum computer publicly available. Link -> https://www.digitaltrends.com/computing/ibm-quantum-computing-ces-2019-q-system-one/
And the best part: Bitcoin is actually pretty safe from this. Since addresses are P2PKH or SW, they are actually not actually susceptible to attack even if ECC is broken. PoW is also safe. Worst case is we have a fork to address the problem.