Ground-state bistability of cold atoms in a cavity

Gábor, Brigitta; Nagy, Dávid; Dombi, András; Clark, Thomas W.; Williams, Ferd; Adwaith, K. V.; Vukics, András; Domokos, P.

doi:10.1103/physreva.107.023713

Cited by 10 publications

(3 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This principle has also been used in the context of the Dicke phase transition including spin-degrees of freedom [5]. Recent work has observed the formation of spin textures [6], spin-dependent interactions [7][8][9], and ground-state bistability [10]. Despite this progress, collective coupling of atoms with magnetic sublevels in the ground and excited state, illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

Collective atom-cavity coupling and nonlinear dynamics with atoms with multilevel ground states

Suarez

Carollo²,

Lesanovsky³

et al. 2023

Phys. Rev. A

View full text Add to dashboard Cite

We investigate experimentally and theoretically the collective coupling between atoms with multilevel ground state manifolds and an optical cavity mode. In our setup the cavity field optically pumps populations among the ground states. The ensuing dynamics can be conveniently described by means of an effective dynamical atom-cavity coupling strength that depends on the occupation of the individual states and their coupling strengths with the cavity mode. This leads to a dynamical backaction of the atomic populations on the atom-cavity coupling strength which results in a non-exponential relaxation dynamics. We experimentally observe this effect with laser-cooled 87 Rb atoms, for which we monitor the collective normal-mode splitting in real time. Our results show that the multilevel structure of electronic ground states can significantly alter the relaxation behavior in atom-cavity settings as compared to ensembles of two-level atoms.

show abstract

Section: Introductionmentioning

confidence: 99%

Collective atom-cavity coupling and nonlinear dynamics with atoms with multilevel ground states

Suarez

Carollo²,

Lesanovsky³

et al. 2023

Phys. Rev. A

View full text Add to dashboard Cite

show abstract

“…The bistability can originate in different features of the system. For example in [25][26][27][28][29], it is caused by saturation, in [30,31] by optomechanical coupling, and in [32][33][34] by the multilevel structure of the ground state. Although all those features are ultimately linked to atomic properties, not all of them can be considered as 'quantum' , as some can be mimicked, for example, by the nonlinear classical refraction index of a crystal.…”

mentioning

confidence: 99%

Quantum resonant optical bistability with a narrow atomic transition: bistability phase diagram in the bad cavity regime

Rivero,

Pessoa Jr,

de França

et al. 2023

New J. Phys.

View full text Add to dashboard Cite

We report on the observation of a novel manifestation of saturation-induced optical bistability in a resonantly pumped optical ring cavity interacting strongly with a cloud of atoms via a narrow atomic transition. The bistability emerges, above a critical pump rate, as an additional peak in the cavity’s normal mode spectrum close to atomic resonance. This third transmission peak is usually suppressed due to strong resonant absorption, but in our experiment it is visible because of the linewidth of the atomic transition being much smaller than that of the cavity, which sets the experiment into the bad-cavity regime. Relying on complete saturation of the transition, this bistability has a quantum origin and cannot be mimicked by a classical material presenting a nonlinear refraction index. The appearance of the central peak in addition to the normal modes is predicted by a semi-classical model derived from the Tavis–Cummings Hamiltonian from which we derive a bistability phase diagram that connects our observations with former work on optical bistability in the good cavity regime. The phase diagram reveals several so far unexplored bistable phases.

show abstract

“…The bistability can originate in different features of the system. For example, in (59)(60)(61)(62) it is caused by the multilevel structure of the ground state (63,64). Bistability can also be induced by saturation (65)(66)(67).…”

Section: Introductionmentioning

confidence: 99%

Observation of collective bistability in an ultracold cloud of strongly driven strontium atoms interacting with a ring cavity

Jerez¹

View full text Add to dashboard Cite

your eyes like a father to a son. And you brought me back to the right path, every time I lost focus, like a good mentor. I will always be grateful to you for everything. Danke schön Philippe! To my lab partners and colleagues, over all these years. Each one of you gave me the tools to become what I am today, none of this would be the same without you. Every talk, every coffee, every hug, every advice, and critique... Thank you guys, I'm so lucky to meet you all.To Yaja and Paula, my mom and sister, las mujeres mas importantes de mi vida! Gracias por todo el apoyo y amor que me dan, por cuidarme y aguantarme a pesar de todo. Yo soy fuerte porque las tengo a ustedes como inspiración, las amo mucho mis bellas.To (this paragraph is the only one that will not be read by the person for which is intended) Rodolfo, my father. Thank you for everything you taught me viejo, the curiosity, the kindness, the humor, the energy, the strength... I still miss you, but I'm consoled by making you feel proud... Yes I know, we never stop learning, don't worry this path is still at the beginning... Te amo tigre.To all the friends I have(had), maybe I meet you on this path, maybe we know from before and you also saw me evolving. Especially, to the people I've lived with, vocês são minha segunda familia. I'm deeply thankful for all I learned with you. Thank you for the support, and thank you for being there. The pirate's queen is nothing without her friends to protect her.To all the personnel of USP, administrative, secretaries, people at the offices and technicians, professors, and every other friendly helper. Also, thanks to the people in TOptica and Thorlabs. Thank you for making it easier to do science.Ao Brasil, como pais, pela oportunidade de estudos que me foi dada e pela maravilhosa estadia (as pessoas, a comida, a música, a lingua... amo muito este país!). Estarei sempre em divida com vocês pelo amor recebido, muito obrigada! Thank you to CAPES, CNPq, and FAPESP, the Brazilian agencies that make it possible for everyone to study and learn in this beautiful country. The path is easier if we all work together.

show abstract

Ground-state bistability of cold atoms in a cavity

Cited by 10 publications

References 53 publications

Collective atom-cavity coupling and nonlinear dynamics with atoms with multilevel ground states

Collective atom-cavity coupling and nonlinear dynamics with atoms with multilevel ground states

Quantum resonant optical bistability with a narrow atomic transition: bistability phase diagram in the bad cavity regime

Observation of collective bistability in an ultracold cloud of strongly driven strontium atoms interacting with a ring cavity

Contact Info

Product

Resources

About