Collective Rydberg excitations of an atomic gas confined in a ring lattice

Olmos, Beatriz; González‐Férez, Rosario; Lesanovsky, Igor

doi:10.1103/physreva.79.043419

Cited by 40 publications

(67 citation statements)

References 29 publications

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“…This is motivated not least by experimental progress [5,6] and theoretical proposals [7,8] for spatially resolved excitation imaging. Also on the theoretical side, in particular rate equation models [9][10][11][12] and full many-body simulations on truncated Hilbert spaces [13][14][15][16][17][18][19][20][21][22][23] provide a handle to access spatially resolved properties.…”

Section: Introductionmentioning

confidence: 99%

Dynamic formation of Rydberg aggregates at off-resonant excitation

et al. 2013

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The dynamics of a cloud of ultra-cold two-level atoms is studied at off-resonant laser driving to a Rydberg state. We find that resonant excitation channels lead to strongly peaked spatial correlations associated with the buildup of asymmetric excitation structures. These aggregates can extend over the entire ensemble volume, but are in general not localized relative to the system boundaries. The characteristic distances between neighboring excitations depend on the laser detuning and on the interaction potential. These properties lead to characteristic features in the spatial excitation density, the Mandel Q parameter, and the total number of excitations. As an application an implementation of the three-atom CSWAP or Fredkin gate with Rydberg atoms is discussed. The gate not only exploits the Rydberg blockade, but also utilizes the special features of an asymmetric geometric arrangement of the three atoms. We show that continuous-wave off-resonant laser driving is sufficient to create the required spatial arrangement of atoms out of a homogeneous cloud.

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Section: Introductionmentioning

confidence: 99%

Dynamic formation of Rydberg aggregates at off-resonant excitation

et al. 2013

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“…Rydberg atoms exhibit bizarre properties, such as strong dipole-dipole interactions and sensitivity to external electric field [61]. Our single atom array is an ideal platform for forming Rydberg rings, which have been analyzed theoretically recently in references [62][63][64]. Due to "Rydberg blockade" effect [6,7], this system is ideally suited to perform multi-qubit operations, investigate quantum phenomena in strong interactions and experimentally simulate the energy transport procedure in light-harvesting complexes [12].…”

Section: Discussionmentioning

confidence: 99%

Single atoms in the ring lattice for quantum information processing and quantum simulation

Shi

et al. 2012

Chin. Sci. Bull.

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We have demonstrated preparing and rotating single neutral rubidium atoms in an optical ring lattice generated by a spatial light modulator, inserting two atoms into a single microscopic optical potential efficiently by dynamically reshaping the optical dipole trap, trapping single atoms in a blue detuned optical bottle beam trap, and confining single atoms into the Lamb-Dicke regime by combining red and blue detuned optical potentials. In combination with the manipulation of internal states of single atoms, the study is opening a way for research in the field of quantum information processing and quantum simulation. In this paper we review the past works and discuss the prospects. laser cooling and trapping, single atoms, quantum information processing, quantum simulation Citation:Yu S, He X D, Xu P, et al. Single atoms in the ring lattice for quantum information processing and quantum simulation. Chin Sci Bull, 2012Bull, , 57: 1931 1945Bull, , doi: 10.1007 Single neutral atoms are promising candidates for quantum information processing [6,7]. A qubit can be encoded in the internal or motional states of an atom, and multi-qubit operations can be performed based on atom-light interactions or atom-atom interactions. In particular, the hyperfine ground states of alkali-metal atoms can be considered as qubits, which can be easily manipulated via microwave radiation or Raman transitions. Several kinds of proposals for quantum gate operation were designed based on dipoledipole interactions between Rydberg atoms [8], cavity-mediated photon exchange [9] and controlled collisions [10]. Furthermore, single atom array can serve as a research platform for physical models described in other systems that are not directly investigated experimentally. The few-body simulation offers an opportunity to understand some intriguing many-body phenomena, such as superconductivity in solid materials [11], and the natural process of photosynthesis [12]. Instead of being adiabatically transferred from ultracold atomic ensemble, in our experiment single atom array is built one by one based on "collisional blockade" mechanism [13,14] that locks the atom number either zero or one in ultra small dipole trap in the presence of near-resonant laser light. Here, we demonstrate trapping single neutral rubidium atoms in the ring lattice generated by a computer controlled spatial light modulator (SLM), and present several kinds of manipulations of single atom array.

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“…for the implementation of quantum error correction schemes or plaquette states in 2D lattice spin models [53], and to realize the structure of a ring lattice with periodic boundary conditions (Fig. 7d) [54,55].…”

Section: Reconfigurable Single-site Addressable Qubit Registermentioning

confidence: 99%

Scalable architecture for quantum information processing with atoms in optical micro-structures

Schlosser

Tichelmann

Kruse

et al. 2011

Quantum Inf Process

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We review recent experimental progress towards quantum information processing and quantum simulation using neutral atoms in two-dimensional (2D) arrays of optical microtraps as 2D registers of qubits. We describe a scalable quantum information architecture based on micro-fabricated optical elements, simultaneously targeting the important issues of single-site addressability and scalability. This approach provides flexible and integrable configurations for quantum state storage, manipulation, and retrieval. We present recent experimental results on the initialization and coherent one-qubit rotation of up to 100 individually addressable qubits, the coherent transport of atomic quantum states in a scalable quantum shift register, and discuss the feasibility of two-qubit gates in 2D microtrap arrays.

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Collective Rydberg excitations of an atomic gas confined in a ring lattice

Cited by 40 publications

References 29 publications

Dynamic formation of Rydberg aggregates at off-resonant excitation

Dynamic formation of Rydberg aggregates at off-resonant excitation

Single atoms in the ring lattice for quantum information processing and quantum simulation

Scalable architecture for quantum information processing with atoms in optical micro-structures

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