Pulsed Generation of Quantum Coherences and Non-classicality in Light-Matter Systems

Frontiers in Physics

Rodrí¹  Quiroga, Luis¹  Gó¹  Acevedo, Oscar L.³  guez, Ferney J.⁴  Johnson, Neil F.⁴  mez-Ruiz, Fernando J.⁴ 

[1] Departamento de FíDepartment of Physics, George Washington University, United States;JILA, University of Colorado, United States;sica, Universidad de los Andes, Colombia

关键词: Driven Quantum Coherences;    Non-classicalities;    Electronic-Vibrational Entanglement.;    Dicke model;    Out-of-equilibrium physics;   

DOI  :  10.3389/fphy.2018.00092

学科分类：物理（综合）

来源: Frontiers

【 摘 要 】

We show that a pulsed stimulus can be used to generate many-body quantum coherences in light-matter systems of general size. Specifically, we calculate the exact real-time evolution of a driven, generic out-of-equilibrium system comprising an arbitrary number N qubits coupled to a global boson field. A novel form of dynamically-driven quantum coherence emerges for general N and without having to access the empirically challenging strong-coupling regime. Its properties depend on the speed of the changes in the stimulus. Non-classicalities arise within each subsystem that have eluded previous analyses. Our findings show robustness to losses and noise, and have potential functional implications at the systems level for a variety of nanosystems, including collections of N atoms, molecules, spins, or superconducting qubits in cavities -- and possibly even vibration-enhanced light harvesting processes in macromolecules.

【 授权许可】

CC BY