“…IBM has made its five-qubit quantum processors 'ibmqx2', 'ibmqx4' and 16-qubit processor 'ibmqx5', as an open access resource [63] for the public to test and verify various theoretical protocols. Many groups were able to test various quantum computational tasks like quantum arXiv:1807.03219v1 [quant-ph] 9 Jul 2018 teleportation [64,65], violation of Mermin inequalities [66], verification of entropic uncertainity relations [67], quantum error correction [68][69][70][71], quantum cheque [72,73], non-destructive discrimination of Bell states [74], designing fault tolerant quantum circuits [75], homomorphic encryption experiments [76], non-Abelian braiding of surface code defects [77], approximate quantum adders [78], entanglement assisted invariance [79], simulating ising interaction [80], comparison or quantum computing architectures [81] to name a few.…”