Abstract: Qubits are typically realized as the eigenstates of some physical system such as an atom. Alternatively, one can encode a qubit into the infinitely many levels of a bosonic mode (a quantum harmonic oscillator). The redundancy of the bosonic encoding can yield advantageous noise properties which simplify the job of an outer layer of quantum error correction. In this talk I will discuss our work realizing a superconducting logical qubit memory formed from the concatenation of encoded bosonic cat qubits with an outer repetition code. The bosonic cat qubits are passively protected against bit flips by two photon dissipation while phase-flip errors are corrected by a repetition code. I will discuss the architecture and characterization of the logical qubit memory and the long term opportunities with concatenated bosonic qubits. Research interests: quantum error correction, quantum computation, superconducting qubits, bosonic quantum error correction.