Researchers have proposed a new method to generate remote quantum entanglement at rates approaching those of two-qubit gates in neutral-atom quantum processors. This breakthrough is crucial for the development of scalable quantum computers, as efficient distribution of entanglement between distant qubits is a fundamental requirement for building quantum networks.
The approach relies on strong dipole-dipole interactions between atomic Rydberg states to generate entanglement between stationary qubits and propagating photons, without the need for an optical cavity. This methodology simplifies the experimental design and opens the door to greater scalability. The authors have thoroughly described the optimal conditions for this entanglement-generation protocol, considering realistic experimental parameters.
The research results indicate that entanglement generation rates exceeding 3 × 10^5 s⁻¹ can be achieved using Rydberg states of ytterbium atoms. This speed is significantly high and comparable with the internal operations of current neutral-atom processors. The inherent scalability and design flexibility of this quantum interconnect position it as a promising avenue for building distributed networks based on neutral-atom quantum architectures.