Light–matter interactions in quantum nanophotonic devices

González-Tudela, Alejandro; Reiserer, Andreas; García-Ripoll, Juan José; García-Vidal, Francisco J.

doi:10.1038/s42254-023-00681-1

Cited by 16 publications

(1 citation statement)

References 169 publications

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“…One-dimensional (1D) waveguides provide an important interface for light-matter interaction [1][2][3][4]. Waveguide quantum electrodynamics (QED) has broad applications in quantum devices, including optical switches [5][6][7][8][9][10][11][12][13][14][15][16], photon detectors [17][18][19][20], quantum storage [21][22][23] and quantum networks [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Collectively induced transparency and absorption in waveguide quantum electrodynamics with Bragg atom arrays

Cheng,

Nie

2024

Commun. Theor. Phys.

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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.

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Section: Introductionmentioning

confidence: 99%

Collectively induced transparency and absorption in waveguide quantum electrodynamics with Bragg atom arrays

Cheng,

Nie

2024

Commun. Theor. Phys.

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Nonvolatile Ferroic and Topological Phase Control under Nonresonant Light

Zhou,

Cui

2024

J. Phys. Chem. Lett.

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Cavity Floquet engineering

Zhou,

Liu,

Liu

et al. 2024

Nat Commun

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Floquet engineering is a promising tool to manipulate quantum systems coherently. A well-known example is the optical Stark effect, which has been used for optical trapping of atoms and breaking time-reversal symmetry in solids. However, as a coherent nonlinear optical effect, Floquet engineering typically requires high field intensities obtained in ultrafast pulses, severely limiting its use. Here, we demonstrate using cavity engineering of the vacuum modes to achieve orders-of-magnitude enhancement of the effective Floquet field, enabling Floquet effects at an extremely low fluence of 450 photons/μm2. At higher fluences, the cavity-enhanced Floquet effects lead to 50 meV spin and valley splitting of WSe2excitons, corresponding to an enormous time-reversal breaking, non-Maxwellian magnetic field of over 200 T. Utilizing such an optically controlled effective magnetic field, we demonstrate an ultrafast, picojoule chirality XOR gate. These results suggest that cavity-enhanced Floquet engineering may enable the creation of steady-state or quasi-equilibrium Floquet bands, strongly non-perturbative modifications of materials beyond the reach of other means, and application of Floquet engineering to a wide range of materials and applications.

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Light–matter interactions in quantum nanophotonic devices

Cited by 16 publications

References 169 publications

Collectively induced transparency and absorption in waveguide quantum electrodynamics with Bragg atom arrays

Collectively induced transparency and absorption in waveguide quantum electrodynamics with Bragg atom arrays

Nonvolatile Ferroic and Topological Phase Control under Nonresonant Light

Cavity Floquet engineering

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