Berlin 2018 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 99: Poster Session: Transport

TT 99.51: Poster

Donnerstag, 15. März 2018, 15:00–19:00, Poster B

Remote entanglement stabilization and distillation by quantum reservoir engineering — Didier Nicolas², •Jérémie Guillaud¹, Shyam Shankar³, and Mazyar Mirrahimi¹ — ¹Inria Paris, Paris, France — ²Rigetti Computing, Berkeley, USA — ³Yale University, New Haven, USA

Quantum information processing protocols based on teleportation require highly entangled pairs of distant qubits as a primary resource. We present a new protocol that achieves an autonomous remote entanglement distillation using two-mode squeezed light as an imperfect source of entanglement. Two remote cavities are driven at distance using a three-wave mixing device that generates a two-mode squeezed light at resonance with the cavities. The autonomous distillation is performed through the local dispersive couplings of qubits to cavities and some additional local drives on the qubits. We will illustrate (numerically and analytically) how this protocol stabilizes a maximally entangled Bell state of the qubits regardless of the applied squeezing strength. We also study the robustness study of this reservoir engineering protocol in presence of various sources of imperfection and decoherence. This study is done through numerical simulations and systematic model reduction techniques such as adiabatic elimination of stable fast dynamics.