Quantum electrodynamics near a photonic bandgap

By Yanbing Liu, Andrew A. Houck. Nature Physics, 2016

243 citations recorded by the source corpus.

Using a superconducting transmon qubit coupled to a microwave photonic crystal one can study intriguing strong-coupling effects such as the emergence of localized cavity modes within the photonic bandgap. Photonic crystals are a powerful tool for the manipulation of optical dispersion and density of states, and have thus been used in applications from photon generation to quantum sensing with nitrogen vacancy centres and atoms1,2. The unique control provided by these media makes them a beautiful, if unexplored, playground for strong-coupling quantum electrodynamics, where a single, highly nonlinear emitter hybridizes with the band structure of the crystal. Here we demonstrate that such a hybridization can create localized cavity modes that live within the photonic bandgap, whose localization and spectral properties we explore in detail. We then demonstrate that the coloured vacuum of the photonic crystal can be employed for efficient dissipative state preparation. This work opens exciting prospects for engineering long-range spin models3,4 in the circuit quantum electrodynamics architecture, as well as new opportunities for dissipative quantum state engineering.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/bdce1562554f94610514038686d24b809e482bfa

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Citations in the corpus

Circuit quantum electrodynamics (2020, background): “Engineering vacuum fluctuations in this system has been pushed even further by creating microwave photonic bandgaps in waveguides to which transmon qubits are coupled (Liu and Houck, 2016; Mirhosseini et al., 2018).”
Atom-light interactions in quasi-one-dimensional nanostructures: A Green's-function perspective (2016, background): “Therefore, these expressions could be employed to understand the spectrum of a very recent experiment of a superconducting qubit in the bandgap of a photonic crystal waveguide, where the Green’s function of the structure varies significantly within the linewidth of the qubit [39].”
Oscillating bound states for a giant atom (2019, background): “[53] Y.”
Quantum Electrodynamics in a Topological Waveguide (2020, background): “[22] Y.”
Microwave photonics with superconducting quantum circuits (2017, background): “periment created a microwave photonic-crystal waveguide with a photonic bandgap and coupled a transmon strongly to the upper band [503].”