Dissipation-Engineered Family of Nearly Dark States in Many-Body Cavity-Atom Systems

Lin, Rui; Rosa-Medina, Rodrigo; Ferri, Francesco; Finger, Fabian; Kroeger, Katrin; Donner, Tobias; Esslinger, Tilman; Читра, Р.

doi:10.1103/physrevlett.128.153601

Cited by 21 publications

(2 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Following its theoretical conception, LWI of Λ-type three-level systems has been experimentally investigated and subsequently observed in the case of CPT [43,44] and the quantum beat laser [40]. Furthermore, recent work has shown how multiple V-type three-level systems can generate many-body dark and nearly-dark states through dissipative stabilization of excited states [45]. Beyond this, recent studies have identified additional second-order phase transitions of three-level systems separate to the laser threshold, revealing their relationships with the fundamental U(1) symmetry [46].…”

Section: Introductionmentioning

confidence: 99%

A quantum model of lasing without inversion

2022

View full text Add to dashboard Cite

Starting from a quantum description of multiple Λ-type three-level atoms driven with a coherent microwave field and incoherent optical pumping, we derive a microscopic model of lasing from which we move towards a consistent macroscopic picture. Our analysis applies across the range of system sizes from nanolaser to the thermodynamic limit of conventional lasing. We explore the necessary conditions to achieve lasing without inversion by calculating the non- equilibrium steady state solutions of the model at, and between, its microscopic and macroscopic limits. For the macroscopic picture, we use mean field theory to present a thorough analysis of the lasing phase transition. In the microscopic case, we exploit the underlying permutation symmetry of the density matrix to calculate exact solutions for N 3-level systems. This allows us to show that the steady state solutions approach the thermodynamic limit as N increases, restoring the sharp non-equilibrium phase transition seen in this limit. We demonstrate how the lasing phase transition and degree of population inversion can be adjusted by simply varying the phase of the coherent driving field. The high level of quantum control presented by this microscopic model and the framework outlined here have clear applications to further understanding and developing nanophotonic technology.

show abstract

Section: Introductionmentioning

confidence: 99%

A quantum model of lasing without inversion

2022

View full text Add to dashboard Cite

show abstract

“…for a two-level system [5] and led to several practical applications such as laser cooling of atoms [6], entangling of atoms [7], exploration of quantum Zeno-type effects [8], the enhancement of laser stability [9], the formation of new quasinormal modes [10], and was proposed for quantum memories [11] and quantum-information processing [12][13][14]. Recently, the bad-cavity limit was considered in the context of V-type three-level systems (3LS) and the formation of dark states [15]. Lossy cavities are also applied when a broader distribution in frequency space is advantageous, e.g., for coupling to the resonances of inhomogeneously broadened systems [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Steady states of Λ-type three-level systems excited by quantum light with various photon statistics in lossy cavities

et al. 2022

View full text Add to dashboard Cite

The interaction between quantum light and matter is being intensively studied for systems that are enclosed in high-Q cavities which strongly enhance the light-matter coupling. Cavities with low Q-factors are generally given less attention due to their high losses that quickly destroy quantum systems. However, bad cavities can be utilized for several applications, where lower Q-factors are required, e.g., to increase the spectral width of the cavity mode. In this work, we demonstrate that low-Q cavities can beneficial for preparing specific electronic steady states when certain quantum states of light are applied. We investigate the interaction between quantum light with various statistics and matter represented by a Λ-type three-level system in lossy cavities, assuming that cavity losses are the dominant loss mechanism. We show that cavity losses lead to non-trivial electronic steady states that can be controlled by the loss rate and the initial statistics of the quantum fields. We discuss the mechanism of formation of such steady states on the basis of the equations of motion and present both analytical expressions and numerical simulations for such steady states.

show abstract

Unravelling-based (auto)control of back-action in atomic Bose–Einstein condensate

Tomilin,

Il’ichov

2024

Front. Phys.

View full text Add to dashboard Cite

Dissipation-Engineered Family of Nearly Dark States in Many-Body Cavity-Atom Systems

Cited by 21 publications

References 69 publications

A quantum model of lasing without inversion

A quantum model of lasing without inversion

Steady states of Λ-type three-level systems excited by quantum light with various photon statistics in lossy cavities

Unravelling-based (auto)control of back-action in atomic Bose–Einstein condensate

Contact Info

Product

Resources

About