The fundamental unit for quantum computing is that the qubit, associate isolated, manageable two-level system. However, for several planned quantum pc architectures, particularly photonic systems, the qubits may be lost or will leak of the required two-level systems, move a major obstacle for sensible quantum computation. Here, we have a tendency to through an experiment demonstrate, each within the quantum circuit model and within the unidirectional quantum pc model, the tiniest nontrivial quantum codes to tackle this drawback. within the experiment, we have a tendency to cipher single-qubit input states into extremely entangled multiparticle code words, and that we check their ability to safeguard encoded quantum data from detected 1-qubit loss error. Our results prove in-principle the practicableness of overcoming the qubit loss error by quantum codes. Quantum computers square measure expected to harness the strange properties of quantum physics like superposition and trap for increased ways in which of knowledge process. However, it's proven extraordinarily troublesome to make such devices in follow. Arguably, the foremost formidable hurdle is that the inescapable decoherence caused by the coupling of the quantum computers to the setting, that destroys the delicate quantum data chop-chop. it's therefore of crucial importance to search out ways in which to cut back the decoherence and perform coherent quantum operations within the presence of noise.