Coupling a Superconducting Qubit to a Left-Handed Metamaterial Resonator
arXiv:2007.10932 · doi:10.1103/PhysRevApplied.14.064033
Abstract
Metamaterial resonant structures made from arrays of superconducting lumped circuit elements can exhibit microwave mode spectra with left-handed dispersion, resulting in a high density of modes in the same frequency range where superconducting qubits are typically operated, as well as a bandgap at lower frequencies that extends down to dc. Using this novel regime for multi-mode circuit quantum electrodynamics, we have performed a series of measurements of such a superconducting metamaterial resonator coupled to a flux-tunable transmon qubit. Through microwave measurements of the metamaterial, we have observed the coupling of the qubit to each of the modes that it passes through. Using a separate readout resonator, we have probed the qubit dispersively and characterized the qubit energy relaxation as a function of frequency, which is strongly affected by the Purcell effect in the presence of the dense mode spectrum. Additionally, we have investigated the ac Stark shift of the qubit as the photon number in the various metamaterial modes is varied. The ability to tailor the dense mode spectrum through the choice of circuit parameters and manipulate the photonic state of the metamaterial through interactions with qubits makes this a promising platform for analog quantum simulation and quantum memories.
arXiv comment12 pages, 11 figures
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- Seamless high-Q microwave cavities for multimode circuit QED
- Interaction between giant atoms in a one-dimensional structured environment
- Avoiding decoherence with giant atoms in a two-dimensional structured environment
- Well-conditioned multi-product formulas for hardware-friendly Hamiltonian simulation
- Realizing quantum optics in structured environments with giant atoms
- Photon-instanton collider implemented by a superconducting circuit
- Circuit QED with a Giant Atom Coupling to Left-handed Superlattice Metamaterials
- Chiral SQUID-metamaterial waveguide for circuit-QED
- Entangling interactions between artificial atoms mediated by a multimode left-handed superconducting ring resonator
- Band engineering and study of disorder using topology in compact high kinetic inductance cavity arrays
- Exact quantization of nonreciprocal quasi-lumped electrical networks
- Particle creation in left-handed metamaterial transmission lines
- Observation of Purcell Effect in Electrically Coupled Cavity-Magnet System