Multidimensional super- and subradiance in waveguide quantum electrodynamics

Abstract

We study the collective decay rates of multidimensional quantum networks in which one-dimensional waveguides form an intersecting hyperrectangular lattice, with qubits located at the lattice points. We introduce and motivate the dimensional reduction of poles (DRoP) conjecture, which identifies all collective decay rates of such networks via a connection to waveguides with a one-dimensional topology (e.g., a linear chain of qubits). Using DRoP, we consider many-body effects such as superradiance, subradiance, and bound states in continuum in multidimensional quantum networks. We find that, unlike one-dimensional linear chains, multidimensional quantum networks have superradiance in distinct levels, which we call multidimensional superradiance. Furthermore, we generalize the N −3 scaling of subradiance in a linear chain to d-dimensional networks.

Emergent Quasiperiodicity from Polariton-phonon Hybrid Excitations in Waveguide Quantum Optomechanics

“…Such systems present an unusual behavior due to strong lightmatter interactions and long-range couplings between emitters mediated by waveguide photons [10][11][12][13]. These features allow the exploration of various exotic phenomena, including unconventional topological phases [14,15], superradiant and subradiant states [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31], and peculiar correlations between photons [32][33][34][35].…”

Bound Photonic Pairs in 2D Waveguide Quantum Electrodynamics

“…The exquisiteness of WQED systems is that they demonstrate an interplay of strong light-matter interaction, chirality, and long-range radiative couplings between quantum emitters arising from the exchange of the propagating photons. The combination of these features gives rise to a plethora of fascinating physical phenomena, including collective super-radiance and sub-radiance [11][12][13][14][15][16][17][18], emergence of unconventional topological phases [19,20], quantum chaos [21], and promotes insightful developments for emergent quantum technologies.…”