Invention:
This innovation is a proposed interface between Gottesman-Kitaev-Preskill (GKP) qubit states (which are optimal for qubit transmission in quantum computing) and quantum memories (which can support long coherence and storage times) based on a cavity-mediated controlled displacement gate. The inventors prescribe optimal regimes of operation for high-quality quantum state transfer and extend this protocol to demonstrate the creation of GKP cluster states by avoiding the requirement of ancillary optical quadrature-squeezed light. This protocol enables many applications in hybrid quantum information processing for tasks in quantum computing, communications, and sensing.
Background:
Gottesman-Kitaev-Preskill (GKP) states have been demonstrated to pose significant advantages when utilized for fault-tolerant all optical continuous-variable quantum computing as well as for quantum communications links for entanglement distribution. However, interfacing these systems to long-lived solid-state quantum memories has remained an open problem, which this new protocol addresses.
Applications:
- Quantum computing
- Quantum communications
- Quantum sensing
- Covert communication
- Cybersecurity
- Banking and financial services
- Data securitization
- Environmental monitoring
- Biomedical imaging
Advantages:
- Greater efficiency
- Faster processing
- Greater security
- Enables use in a wide variety of applications
