Dissipative Preparation of Entanglement in Optical Cavities

Kastoryano, Michael J.; Reiter, Florentin; Sørensen, Anders S.

doi:10.1103/physrevlett.106.090502

Cited by 354 publications

(380 citation statements)

References 24 publications

Supporting

Mentioning

375

Contrasting

Order By: Relevance

“…where the L k 's are the so-called Lindblad operators [26]. The five Lindblad operators governing dissipation in the two-atom model are (28) where κ is the decay of the cavity and Γ i (i = 1, 2, 3, 4) are the spontaneous emissions of atoms.…”

Section: Shortcuts To Adiabatic Passage For the Fast Populations mentioning

confidence: 99%

Efficient shortcuts to adiabatic passage for fast population transfer in multiparticle systems

et al. 2014

View full text Add to dashboard Cite

Achieving fast population transfer (FPT) in multiparticle systems based on the cavity quantum electronic dynamics is an outstanding challenge. In this paper, motivated by the quantum Zeno dynamics, a shortcut for performing the FPT of ground states in multiparticle systems with the invariant based inverse engineering is proposed. Numerical simulation demonstrates that a perfect population transfer of ground states in multiparticle systems can be rapidly achieved in one step, and the FPT is robust to both the cavity decay and atomic spontaneous emission.Additionally, this scheme is not only implemented without requiring extra complex conditions, but also insensitive to variations of the parameters.

show abstract

Section: Shortcuts To Adiabatic Passage For the Fast Populations mentioning

confidence: 99%

Efficient shortcuts to adiabatic passage for fast population transfer in multiparticle systems

et al. 2014

View full text Add to dashboard Cite

show abstract

“…However, entanglement is a property that is hard to reach technologically and even when achieved, it is a very unstable quantum state, vulnerable under the effects of decoherence, any dissipative process as a result of the coupling to environment. Conventionally these effects are considered mainly destructive for entanglement, nevertheless some recent studies of this subject attest results different from the common conviction, even appearing as counterintuitive at first glance [2][3][4].…”

Section: Introductionmentioning

confidence: 98%

Thermally generated long-lived quantum correlations for two atoms trapped in fiber-coupled cavities

2012

View full text Add to dashboard Cite

A theoretical model for driving a two qubit system to a stable long-lived entanglement is discussed. The entire system is represented by two atoms, initially in ground states and disentangled, each one coupled to a separate cavity with the cavities connected by a fiber. The cavities and fiber exchange energy with their individual thermal environments. Under these conditions, we apply the theory of microscopic master equation developed for the dynamics of the open quantum system. Deriving the density operator of the two-qubit system we found that stable long-lived quantum correlations are generated in the presence of thermal excitation of the environments. To the best of our knowledge, there is no a similar effect observed in a quantum open system described by a generalized microscopic master equation in the approximation of the cavity quantum electrodynamics.

show abstract

“…The main difference between the two schemes is that in Ref. [45] the cavity resonance is assumed to be far detuned from the atomic resonance, while in the present approach the two resonances are the same. Thus they operate in qualitatively different regimes of cavity QED.…”

Section: Supplemental Materialsmentioning

confidence: 99%

“…To prepare the singlet state |S = |gs − |sg we use a similar approach to Ref. [45] whereby the singlet state is engineered to be the steady state of a driven, dissipative evolution. We take a separation n such that cos q * r n = 1 andρ…”

Section: Fig 1: A)mentioning

confidence: 99%

Nanoplasmonic Lattices for Ultracold Atoms

et al. 2012

View full text Add to dashboard Cite

We propose to use sub-wavelength confinement of light associated with the near field of plasmonic systems to create nanoscale optical lattices for ultracold atoms. Our approach combines the unique coherence properties of isolated atoms with the sub-wavelength manipulation and strong light-matter interaction associated with nano-plasmonic systems. It allows one to considerably increase the energy scales in the realization of Hubbard models and to engineer effective long-range interactions in coherent and dissipative many-body dynamics. Realistic imperfections and potential applications are discussed.PACS numbers: 37.10. Gh, 73.20.Mf, 78.67.Bf Coherent optical fields provide a powerful tool for manipulating ultracold atoms [1,2]. However, diffraction sets a fundamental limit for the length-scale of such manipulations, given by the wavelength of light [3]. In particular, the large period of optical lattices determines the energy scale of the associated many-body atomic states [4][5][6][7]. The resulting scaling can be best understood by noting that in the first Bloch band the maximum atomic momentum ∼ 1/ , where is the lattice spacing. This sets the maximum kinetic energy to h 2 /m 2 [8]. For conventional optical lattices the lattice spacing is set by half the wavelength of the trapping light ∼ 500 nm; this yields corresponding tunneling rates of up to a few tens of kHz. Additionally, for atoms in their electronic ground states interactions are restricted to short range.Recent experimental [9] and theoretical [10,11] work has demonstrated that integrating plasmonic systems with cold atoms represents a promising approach to achieving subwavelength control of atoms. In particular, the experiments of Ref. [9] showed that ultracold atoms can be used to probe the near fields of plasmonic structures, paving the way to eventually trap atoms above such structures. In this Letter we propose and analyze a novel approach to the realization of high-density optical lattices using the optical potential formed from the near field scattering of light by an array of plasmonic nanoparticles. By bringing atom trapping into the subwavelength and nanoscale regime we show that the intrinsic scales of tunneling and onsite interaction for the Hubbard model can be increased by several orders of magnitude compared to conventional optical lattices. In addition, subwavelength confinement of the atoms results in strong radiative interactions with the plasmonic modes of the nanoparticles [12]. The coupled atom-plasmon system can be considered as a scalable cavity array that results in strong, long range spin-spin interactions between the atoms with both dissipative and coherent contributions [13,14]. Such a system can be used for entanglement of remote atoms as well as for novel realizations of coherent and dissipative many-body systems.To illustrate our approach we first consider a single metallic nanosphere in vacuum illuminated by a plane wave. For spheres small compared to a wavelength the dominant contribution to the scattered field is ...

show abstract

Dissipative Preparation of Entanglement in Optical Cavities

Cited by 354 publications

References 24 publications

Efficient shortcuts to adiabatic passage for fast population transfer in multiparticle systems

Efficient shortcuts to adiabatic passage for fast population transfer in multiparticle systems

Thermally generated long-lived quantum correlations for two atoms trapped in fiber-coupled cavities

Nanoplasmonic Lattices for Ultracold Atoms

Contact Info

Product

Resources

About