Curator's Take
AI Commentary
This article demonstrates that periodically driven dissipative dynamics—Floquet reservoir engineering—can autonomously generate and protect high‑fidelity entanglement between spatially separated logical qubits, a capability that has been a bottleneck for modular quantum processors. By interleaving continuous dissipation with tailored unitary gates, the authors overcome the “time‑entanglement” trade‑off of static dissipative schemes and even perform on‑the‑fly entanglement distillation, offering a practical route to robust links in superconducting architectures that already host cat‑qubits and transmons. If experimental implementations can match the predicted loss tolerance, the technique could become a key building block for scalable error‑corrected networks, though its performance will still hinge on precise timing control and low‑noise drive electronics.
— Mark Eatherly
Summary
Implementing controlled dissipative dynamics is a powerful approach for state preparation in a variety of contexts, including the preparation of remote entangled states. Here, we show that by going beyond the standard setting of time-independent dissipative dynamics, one can realize even more powerful non-unitary protocols. We introduce dissipative Floquet protocols for stabilizing remote entanglement of logical qubits, where continuously-running dissipation is interleaved with a periodic sequence of unitary gates. These protocols harness existing experimental capabilities, and overcome time-entanglement limits that constrain standard approaches. They also implement an autonomous form of entanglement distillation. We show how these protocols give enhanced protection against waveguide loss, and as an example, analyze a specific implementation using cat-qubits and transmons in a superconducting circuit.