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The formation of dark states is an important concept in quantum sciences, but its compatibility with strong interparticle interactions -- for example, in a quantum degenerate gas -- is hardly explored. Here, we realize a dark state in one…

We report on a combined experimental and theoretical investigation into the normal modes of an all-fiber coupled cavity-quantum-electrodynamics system. The interaction between atomic ensembles and photons in the same cavities, and that…

Quantum Physics · Physics 2019-07-02 Donald H. White , Shinya Kato , Nikolett Nemet , Scott Parkins , Takao Aoki

We study an atom-cavity system in which the cavity has several degenerate transverse modes. Mode-resolved cavity transmission spectroscopy reveals well-resolved atom-cavity resonances for several cavity modes, a signature of collective…

We study transport through a triple quantum dot in a triangular geometry with applied bias such that both singly- and doubly- charged states participate. We describe the formation of electronic dark states -- coherent superpositions that…

Mesoscale and Nanoscale Physics · Physics 2009-09-18 Christina Pöltl , Clive Emary , Tobias Brandes

A quantum state of matter that is forbidden to interact with photons and is therefore undetectable by spectroscopic means is called a dark state. This basic concept can be applied to condensed matter where it suggests that a whole band of…

We describe the decoherence-free subspace of N atoms in a cavity, in which decoherence due to the leakage of photons through the cavity mirrors is suppressed. We show how the states of the subspace can be entangled with the help of weak…

Quantum Physics · Physics 2009-10-31 Almut Beige , Daniel Braun , Peter L. Knight

We examine conditions under which an open quantum system composed of a driven degenerated parametric oscillator cavity and a driven two-level atom coupled to a waveguide could decay to a pure dark state rather than the expected mixed state.…

Quantum Physics · Physics 2017-02-15 Fengzheng Zhu , Teng Zhao , Hebin Zhang , Gao-xiang Li , Zbigniew Ficek

We study a generalized double Jaynes-Cummings (JC) model where two entangled pairs of two-level atoms interact indirectly. We focus on the case where the cavities and the entangled pairs are uncorrelated. We show that there exist initial…

Quantum Physics · Physics 2015-06-05 Andrzej Veitia , Jun Jing , Ting Yu , Chee Wei Wong

We describe a mathematical solution for the generation of entangled N-photon states in two field modes. A simple and compact solution is presented for a two-mode Jaynes-Cummings model by combining the two field modes in a way that only one…

Quantum Physics · Physics 2009-11-07 C. Wildfeuer , D. H. Schiller

A nondegenerate two-photon Jaynes-Cummings model is investigated where the leakage of photon through the cavity is taken into account. The effect of cavity damping on the mean photon number, atomic populations, field statistics and both…

Quantum Physics · Physics 2015-06-26 E. K. Bashkirov , M. S. Rusakova

We studied the interaction of a two-level atom with a frequency modulated cavity mode in an ideal optical cavity. The system, described by a Jaynes-Cumming Hamiltonian, gave rise to a set of stiff nonlinear first order equations solved…

Quantum Physics · Physics 2013-01-22 U. Pishipati , I. Almakremi , Amitabh Joshi , Juan D. Serna

Catalysis plays a key role in many scientific areas, most notably in chemistry and biology. Here we present a catalytic process in a paradigmatic quantum optics setup, namely the Jaynes-Cummings model, where an atom interacts with an…

We study the multiple-photon bundle emission in the $n$-photon Jaynes-Cummings model composed of a two-level system coupled to a single-mode optical field via the $n$-photon exciting process. Here, the two-level system is strongly driven by…

Quantum Physics · Physics 2023-05-01 Shu-Yuan Jiang , Fen Zou , Yi Wang , Jin-Feng Huang , Xun-Wei Xu , Jie-Qiao Liao

A criterion for strong coupling between two quantum emitters and a single resonant light mode in a cavity is presented. The criterion takes into account the escape of cavity photons and the spontaneous emission of the emitters, which are…

Quantum Physics · Physics 2015-06-05 Nicolás Quesada

It was shown in Ref.[Phys.Rev.A 77,045802(2008)] that the dynamics of a control atom and an atomic sample interacting dispersively with a cavity can be discribed by the Jaynes-Cummings model and the collective mode of the atomic sample can…

Quantum Physics · Physics 2008-12-31 Ya-Fei Yu , Feng Mei , Zhi-Ming Zhang , Shi-Liang Zhu

The quantum entanglement between two excitons in two-dimensional materials, embedded in an optical microcavity, was investigated. The energy eigenstates of a Jaynes-Cummings like Hamiltonian for two qubits coupled to a single cavity mode…

Mesoscale and Nanoscale Physics · Physics 2022-10-05 Gabriel P. Martins , Oleg L. Berman , Godfrey Gumbs , Yurii E. Lozovik

The singlet state of a system of two two-level atoms changes smoothly, remaining dark, as the Hamiltonian TC is slowly deformed, despite the inapplicability of the adiabatic theorem to this case. In this case, there is a small probability…

Quantum Physics · Physics 2023-05-30 Vitaliy Afanasyev , Chen Ran , Yuri Ozhigov , You Jiangchuan

The dynamics of few two-level atoms interacting with one cavity mode is described in master equation formalism. Two different configurations are considered: a transient one with all atoms initially in the excited state and a stationary one…

Optics · Physics 2013-11-18 Paolo Schwendimann , Antonio Quattropani

We find that the phase-space representation of the electromagnetic field inside a driven cavity strongly coupled to a two-level atom can be employed to distinguish photon emissions along a ladder of dressed states sustaining a two-photon…

Quantum Physics · Physics 2022-12-23 Th. K. Mavrogordatos

We propose a scheme to deterministically generate atomic two-dimensional and three-dimensional entangled states by passing two 87Rb atoms through a high-Q bi-mode cavity alternately. The scheme is insensitive to atomic spontaneous decay…

Quantum Physics · Physics 2015-06-11 Peng Shi , Li-Bo Chen , Wen-Dong Li , Chun-Nian Ren , Chun-Hong Zheng , Yong-Jian Gu