Collectively induced transparency and absorption in waveguide QED with Bragg atom arrays

Abstract

Collective quantum states, such as subradiant and superradiant states, are useful for controlling optical responses in many-body quantum systems. In this work, we study novel collective quantum phenomena in waveguide-coupled Bragg atom arrays with inhomogeneous frequencies. For atoms without free-space dissipation, collectively induced transparency is produced by destructive quantum interference between subradiant and superradiant states. In a large Bragg atom array, multi-frequency photon transparency can be obtained by considering atoms with different frequencies. Interestingly, we find collectively induced absorption (CIA) by studying the influence of free-space dissipation on photon transport. Tunable atomic frequencies nontrivially modify decay rates of subradiant states. When the decay rate of a subradiant state equals to the free-space dissipation, photon absorption can reach a limit at a certain frequency. In other words, photon absorption is enhanced with low free-space dissipation, distinct from previous photon detection schemes. We also show multi-frequency CIA by properly adjusting atomic frequencies. Our work presents a way to manipulate collective quantum states and exotic optical properties in waveguide QED systems.

References in corpus (12)

• Chiral Quantum Optics
• Controllable scattering of photons inside a one-dimensional resonator waveguide
• Photon-mediated interactions between distant artificial atoms
• Observation of Dicke Superradiance for Two Artificial Atoms in a Cavity with High Decay Rate
• Microwave Photon Detector in Circuit QED
• Quantum State Transfer via Noisy Photonic and Phononic Waveguides
• Cooperative eigenmodes and scattering in 1D atomic arrays
• Intracity quantum communication via thermal microwave networks
• Dynamical theory of single photon transport in a one-dimensional waveguide coupled to identical and non-identical emitters
• Arrays of strongly-coupled atoms in a one-dimensional waveguide
• Efficient single-photon frequency conversion in the microwave domain using superconducting quantum circuits
• Multiple electromagnetically induced transparency without a control field in an atomic array coupled to a waveguide