Demonstration of long-range quantum state teleportation

  • Datum:

    Dienstag, 14.11.2023, 16.00 Uhr

  • Referent:

    Dr. Lior Ella
    Quantum Machines, Israel

  • Abstract: Adaptive quantum circuits, in which gates are conditioned on mid-circuit measurement results, are emerging as enables for expanding the capabilities of NISQ processors beyond what is possible today. In particular, they allow for efficient preparation of topolo- gically-ordered and non-abelian states of matter [1] and for observing measurement in- duced phase transitions [2]. The canonical example of an adaptive circuit is state telepor- tation, which serves both as a fundamental building block in measurement-based quan- tum computation schemes as well as allows for quantum state routing in constant-depth between distant qubits [3]. In this work, we demonstrate for the first time teleportation-ba- sed routing across a chain of 7 superconducting qubits. This requires both ultra-low la- tency real time feedback with logical classical operations within the coherence time, as well as the generation of a highly entangled state between all qubits. This work paves the way for the efficient simulation of exotic states of matter on NISQ processors by greatly expanding the capabilities of present-day superconducting quantum processors.

     

    [1] https://arxiv.org/pdf/2302.01917
    [2] https://arxiv.org/abs/2303.04792
    [3] https://arxiv.org/abs/2204.0418