A system is provided for cloud computing security using a quantum encryption algorithm. In particular, the system may comprise a quantum computing system that receives target data that has been encrypted using a first encryption algorithm. The quantum computing system may encrypt the target data using a second encryption algorithm, which may include a quantum encryption algorithm. Once the target data has been encrypted using the second encryption algorithm, the target data may be stored on a cloud server. Upon receiving a request for the target data, the quantum computing system may perform a decryption of the encrypted target data through the second encryption algorithm such that the target data may then be decrypted using the first encryption algorithm before being served to the requesting endpoint device.