H. E. Tureci

Stabilizing entanglement via symmetry-selective bath engineering in superconducting qubits

  1. M. E. Schwartz,
  2. L. Martin,
  3. E. Flurin,
  4. C. Aron,
  5. M. Kulkarni,
  6. H. E. Tureci,
  7. and I. Siddiqi
Bath engineering, which utilizes coupling to lossy modes in a quantum system to generate non-trivial steady states, is a tantalizing alternative to gate- and measurement-based quantum
science. Here, we demonstrate dissipative stabilization of entanglement between two superconducting transmon qubits in a symmetry-selective manner. We utilize the engineered symmetries of the dissipative environment to stabilize a target Bell state; we further demonstrate suppression of the Bell state of opposite symmetry due to parity selection rules. This implementation is resource-efficient, achieves a steady-state fidelity =0.70, and is scalable to multiple qubits.
arxiv pdf