Small environmental disturbances or content defects may cause qubits to err and drop their quantum data. This method, identified as decoherence, limitations the useful life time of the qubit. As an example, integer factorization as well as discrete logarithm issue are acknowledged for being in BQP and so are suspected https://quantumcomputing12344.actoblog.com/28748707/rumored-buzz-on-quantum-computing