Join us for the talk in the auditorium at 2:00 p.m., and a reception with cake in the h-Bar following the talk!
Abstract: Reconfigurable arrays of neutral atoms combined with coherent Rydberg interactions are an exciting platform to study quantum many-body phenomena and quantum information protocols.
Here, I will introduce new methods for controlling and measuring atom arrays that open up new directions in quantum state control, quantum feedback and many-body physics. First, I will introduce a dual species atomic array in which the second atomic species can be used to measure and control the primary species. We use an array of cesium qubits to correct correlated phase errors on an array of rubidium data qubits [1]. Crucially, by combining in-sequence readouts, data processing, and feed-forward operations, these correlated errors are suppressed within the execution of the quantum circuit. Furthermore, I will discuss progress towards the realization of Rydberg interactions between the Rb-array and Cs-array, which would enable dual-species gates and quantum-nondemolition readout via the use of auxiliary qubits.
An alternative, hybrid approach for engineering interactions and scaling these quantum systems is the coupling of atoms to nanophotonic structures in which photons mediate interactions between atoms. Such a system can function as the building block of a large-scale quantum network [2]. In this context, I will present quantum network node architectures that are capable of long-distance entanglement distribution at telecom wavelengths [3].
[1] Singh*, Bradley*, Anand*, Ramesh, White, Bernien arXiv:2208.11716 (2022)
[2] Covey, Weinfurter, Bernien arXiv:2304.02088 (2023)
[3] Menon, Singh, Borregaard, Bernien NJP 22, 073033 (2020)