• Corpus ID: 252544955

Many-body superradiance and dynamical symmetry breaking in waveguide QED

@inproceedings{CardenasLopez2022ManybodySA,
  title={Many-body superradiance and dynamical symmetry breaking in waveguide QED},
  author={Silvia Cardenas-Lopez and Stuart J Masson and Zoe Zager and Ana Asenjo-Garcia},
  year={2022}
}
The many-body decay of extended collections of two-level systems remains an open problem. Here, we investigate whether an array of qubits coupled to a one-dimensional bath undergoes Dicke superradiance, a process whereby a completely inverted system synchronizes as it decays, generating correlations between qubits via dissipation. This leads to the release of all the energy in the form of a rapid photon burst. We derive the minimal conditions for the burst to happen as a function of the number… 

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References

SHOWING 1-10 OF 47 REFERENCES

Cavity quantum electrodynamics with atom-like mirrors

The dynamical exchange of excitations between a single artificial atom and an entangled collective state of an atomic array is observed through the precise positioning of artificial atoms realized as superconducting qubits along a one-dimensional waveguide, reaching the regime of strong coupling.

Subradiant states of quantum bits coupled to a one-dimensional waveguide

The properties of coupled emitters can differ dramatically from those of their individual constituents. Canonical examples include sub- and super-radiance, wherein the decay rate of a collective

Universality of Dicke superradiance in arrays of quantum emitters

Dicke superradiance is an example of emergence of macroscopic quantum coherence via correlated dissipation. Starting from an initially incoherent state, a collection of excited atoms synchronizes as

Many-Body Signatures of Collective Decay in Atomic Chains.

It is shown that the superradiant burst survives at small distances, despite Hamiltonian dipole-dipole interactions, and the two-photon correlation function is calculated and demonstrated that emission is correlated and directional, as well as sensitive to small changes in the interatomic distance.

Quantum optics of chiral spin networks

We study the driven-dissipative dynamics of a network of spin-1/2 systems coupled to one or more chiral 1D bosonic waveguides within the framework of a Markovian master equation. We determine how the

Wave-function approach to dissipative processes in quantum optics.

An alternative approach using a wave-function treatment to describe the atomic system and it is shown that this treatment is equivalent to the standard density matrix approach leading to the OBE's.

Emergent Dark States from Superradiant Dynamics in Multilevel Atoms in a Cavity

We investigate the collective decay dynamics of atoms with a generic multilevel structure (angular momenta F ↔ F0) coupled to two light modes of different polarization inside a cavity. In contrast to

Dicke Superradiance in Ordered Lattices: Dimensionality Matters

Dicke superradiance in ordered atomic arrays is a phenomenon where atomic synchronization gives rise to a burst in photon emission. This superradiant burst only occurs if there is one – or just a few

Collective spontaneous emission from a line of atoms

We study collective spontaneous emission from a linear array of N two-state atoms using quantum trajectory theory and without an a priori single-mode assumption. Assuming a fully excited initial

Superradiance

Superradiance is a radiation enhancement process that involves dissipative systems. With a 60 year-old history, superradiance has played a prominent role in optics, quantum mechanics and especially