Quantum Engineering of Superdark Excited States in Arrays of Atoms
arXiv:2006.15623 · doi:10.1103/PhysRevA.102.053712
Abstract
We suggest a regular method of achieving an extremely long lifetime of a collective singly excited state in a generic small-size ensemble of N identical atoms. The decay rate Γ_N of such a `superdark' state can be as small as Γ_N \propto Γ(r/λ)^{2(N-1)} (Γis the radiative decay rate of an individual atom, r and λare the system size and the wavelength of the radiation, respectively), i.e., considerably smaller than in any of the systems suggested up to now. The method is based on a special fine tuning of the atomic Hamiltonian: namely, on a proper position-dependent adjustment of atomic transition frequencies. So chosen set of the control parameters is sufficient to ensure the minimum of the spontaneous decay rate of the engineered state in a generic ensemble of atoms (`qubits').
References in corpus (17)
- Exponential improvement in photon storage fidelities using subradiance and "selective radiance" in atomic arrays
- Subradiance in a Large Cloud of Cold Atoms
- Storing light with subradiant correlations in arrays of atoms
- Single Photon Subradiance: Quantum control of spontaneous emission and ultrafast readout
- Theory of Subradiant States of a One-Dimensional Two-Level Atom Chain
- Subradiant Bell states in distant atomic arrays
- Dark state optical lattice with sub-wavelength spatial structure
- Collective Dipole-Dipole Interactions in an Atomic Array
- Quantum Interferences in Cooperative Dicke Emission from Spatial Variation of Laser Phase
- Cavity antiresonance spectroscopy of dipole coupled subradiant arrays
- Dynamic optical lattices of sub-wavelength spacing for ultracold atoms
- Extraordinary subradiance with lossless excitation transfer in dipole-coupled nano-rings of quantum emitters
- Extremely subradiant states in a periodic one-dimensional atomic array
- Subradiance and radiation trapping in cold atoms
- Collective Enhancement and Suppression of Excitation Decay in Optical Lattices
- Heralded Bell State of Dissipative Qubits Using Classical Light in a Waveguide
- Symmetry protected single photon subradiance