Light splitting and stopping and their combination via controllable Bloch oscillation in a lattice

Du, Lei; Zhang, Yan

doi:10.1364/josab.384001

Cited by 3 publications

(1 citation statement)

References 57 publications

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“…In this paper, we study the decay dynamics of a two-level giant atom coupled to a quasi-one-dimensional sawtooth lattice [33,34,39]. We assume that the two sublattices are far detuned from each other, so that one can adiabatically eliminate the sublattice with fewer sites and the bath is equivalent to a single-band lattice with modified hopping rates.…”

Section: Introductionmentioning

confidence: 99%

Decay dynamics of a giant atom in a structured bath with broken time-reversal symmetry

Du,

Chen,

Zhang

et al. 2023

Quantum Sci. Technol.

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We study in this paper the decay dynamics of a two-level giant atom, which is coupled to a quasi-one-dimensional sawtooth lattice exposed to uniform synthetic magnetic fluxes. In the case where the two sublattices have a large detuning, the giant atom is effectively coupled to a single-band structured bath with flux-controlled energy band and time-reversal symmetry. This feature significantly affects the decay dynamics of the giant atom as well as the propagation of the emitted photon. In particular, the giant atom can exhibit chiral spontaneous emission and allow for nonreciprocal delayed light, which are however unattainable by coupling a small atom to this lattice. Giant atoms with different frequencies can be designed to emit photons towards different directions and with different group velocities. Our results pave the way towards engineering quantum networks and manipulating giant-atom interference effects.

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Section: Introductionmentioning

confidence: 99%

Decay dynamics of a giant atom in a structured bath with broken time-reversal symmetry

Du,

Chen,

Zhang

et al. 2023

Quantum Sci. Technol.

Self Cite

View full text Add to dashboard Cite

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Electromagnetic waves in an optical photonic lattice

Korovay¹

2020

Quantum Electron.

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Laser light propagation in a photonic lattice consisting of two parallel waveguide arrays is theoretically studied using the coupled mode method, with the interaction of each waveguide with the nearest neighbours and between the waveguides of the arrays being taken into account. Analytical expressions are obtained that make it possible to accurately predict the presence of localisation of light depending on the coupling constants. Particular solutions of a system of coupled waves are found, which describe strongly localised light propagating without transverse diffraction along the entire lattice at certain values of the coupling constants. The emergence of spatially limited transverse diffraction of light is predicted.

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Simulating electrical fields in the orbital angular momentum space of light

et al. 2022

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We study a system of coupled degenerate cavities with a switchable beam rotator embedded in the optical path of the main cavity. By exploiting the phase shift of the beam rotator dependent on the orbital angular momentum of the optical modes, and modulating the phase imbalance in the auxiliary cavity, it is shown that the system dynamics is equivalent to that of a charged particle in a 1D lattice subject to both static and time-dependent electrical fields. We investigate interesting physics and phenomena such as Bloch oscillations that arise due to the simulated electrical fields, and discuss how they can be used for practical purposes such as storing optical signals in a quantum memory. We also present a powerful measurement scheme to detect the system dynamics that is non-intrusive and technically easy to perform.

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Light splitting and stopping and their combination via controllable Bloch oscillation in a lattice

Cited by 3 publications

References 57 publications

Decay dynamics of a giant atom in a structured bath with broken time-reversal symmetry

Decay dynamics of a giant atom in a structured bath with broken time-reversal symmetry

Electromagnetic waves in an optical photonic lattice

Simulating electrical fields in the orbital angular momentum space of light

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