One- and Two-Axis Squeezing via Laser Coupling in an Atomic Fermi-Hubbard Model
Tanausú Hernández Yanes, Marcin Płodzień, Mažena Mackoit-Sinkevičienė, Giedrius Žlabys, Gediminas Juzeliūnas, Emilia Witkowska
Abstract
Generation, storage, and utilization of correlated many-body quantum states are crucial objectives of future quantum technologies and metrology. Such states can be generated by the spin-squeezing protocols, i.e., one-axis twisting and two-axis countertwisting. In this Letter, we show activation of these two squeezing mechanisms in a system composed of ultracold atomic fermions in the Mott insulating phase by a position-dependent laser coupling of atomic internal states. Realization of both the squeezing protocols is feasible in the current state-of-the-art experiments.
Topics & Concepts
PhysicsFermi Gamma-ray Space TelescopeCoupling (piping)Degrees of freedom (physics and chemistry)LaserFermionPhase (matter)Spin (aerodynamics)Orientation (vector space)Hubbard modelAtomic physicsCondensed matter physicsQuantum mechanicsMaterials scienceThermodynamicsSuperconductivityGeometryMathematicsMetallurgyCold Atom Physics and Bose-Einstein CondensatesQuantum many-body systemsQuantum and electron transport phenomena