⚡ Quantum Brief
Researchers demonstrated encrypted cloning of unknown quantum states, bypassing the no-cloning theorem’s restrictions by using unitary transformations to create multiple encrypted copies of a single qubit.
Each encrypted clone requires a unique decryption key, which is consumed upon use—ensuring only one decryption per clone and preserving the no-cloning principle’s core constraint.
This breakthrough introduces a new paradigm for quantum redundancy, enabling parallel processing and scalability in systems where direct qubit duplication is impossible under standard quantum mechanics.
Potential applications include encrypted quantum multi-cloud storage, allowing secure distribution of quantum data across multiple servers without violating fundamental quantum limits.
The method leverages unitary operations for both encryption and decryption, offering a practical workaround for quantum information storage and transmission while maintaining theoretical compliance.
“We show that encrypted cloning of unknown quantum states is possible. Any number of encrypted clones of a qubit can be created through a unitary transformation, and each of the encrypted clones can be decrypted through a unitary transformation. The decryption of an encrypted clone consumes the decryption key, i.e., only one decryption is possible, in agreement with the no-cloning theorem. Encrypted cloning represents a new paradigm that provides a form of redundancy, parallelism or scalability where direct duplication is forbidden by the no-cloning theorem. For example, a possible application of encrypted cloning is to enable encrypted quantum multi-cloud storage.” submitted by /u/Earachelefteye [link] [comments]
