Towards Experimental Realization of Topological Floquet Models in Circuit QED

Friday Quantum Seminar

Martin Ritter (JQI)
Friday, April 26, 2024 - 12:00pm
ATL 2324

Topological band structures are well known to produce symmetry-protected chiral edge states which transport particles unidirectionally. These same effects can be harnessed in the frequency domain using a spin-1/2 system subject to periodic drives. Previously, the topological regime of such models was thought to be experimentally inaccessible due to a need for ultrastrong coupling; however, recent results have shown that the desired Hamiltonian is achievable in a rotating frame and can give rise to translations of non-classical states of light in a cavity in the Fock basis which we call "boosting". The native strong light-matter coupling in circuit QED along with tunable qubits allows us to tune the system into the regime where boosting can occur. Here I will present the design we have developed to achieve the strong driving necessary to reach the topological pumping regime and discuss our progress towards realizing boosting.

Pizza and drinks will be served after the seminar in ATL 2117.