Large energy superpositions via Rydberg dressing

Khazali, Mohammadsadegh; Lau, Hon Wai; Humeniuk, Adam; Simon, Christoph

doi:10.1103/physreva.94.023408

Cited by 30 publications

(27 citation statements)

References 66 publications

(111 reference statements)

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“…Considering the 1A Bohr radius size of 1S excitons that are confined to the copper ions and 10µm Blockade radius of 24P Rydberg state, the number of entangled excitons could improve upon the future progresses in reducing the background phononic noise of Rydberg spectrum. This proposal could also be applied in the clock state of alkaline earth atoms resulting to huge energy cat state ideal for the test of quantum gravity related energy decoherence [21] and would be ideal for increasing the precision of Sr atomic clocks.…”

Section: Discussionmentioning

confidence: 99%

“…Principal number "n" Fig. 3e Blockade radius is set to be three times larger than the trap diameter to ensure the homogeneity of interaction [21]. The inset shows the required cat creation time.…”

Section: Decoherencementioning

confidence: 99%

“…In the current paper, fast Lipkin-Meshkov-Glick type Hamiltonian in a Rydberg dressed BEC speeds up the entanglement generation process [14] by a factor that is proportional to the size of cat state comparing to the scheme of Ref. [21] and therefore results to the formation of 700 atoms cat state.…”

Section: Introductionmentioning

confidence: 99%

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Progress towards macroscopic spin and mechanical superposition via Rydberg interaction

Khazali

2018

Phys. Rev. A

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This paper is a proposal for the generation of many-body entangled state in atomic and mechanical systems. Here the detailed feasibility study shows that application of strong Rydberg dressing interaction and fast bifurcation scheme in a Bose Einstein Condensate of Rb atoms, results to the formation of large cat states. By detailed study of the de-coherence effects using Quantum Jump Monte Carlo approach and taking into account the obstacles like collective decoherence and level mixing, this proposal predicts the formation of 700 atoms cat state. Subsequent transfer of the generated superposition to far separated mechanical oscillators is proposed, using dipole coupling between Rydberg atoms and charged cantilevers.

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Section: Discussionmentioning

confidence: 99%

Section: Decoherencementioning

confidence: 99%

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Progress towards macroscopic spin and mechanical superposition via Rydberg interaction

Khazali

2018

Phys. Rev. A

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“…(12) but will directly use that result to obtain the final K-matrix, Eq. (14). Thus, the frame transformation will proceed from the coupling in Fig.…”

Section: A Rare Earth Example: 165 Homentioning

confidence: 99%

Theory of long-range interactions for Rydberg states attached to hyperfine-split cores

2018

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The theory is developed for one and two atom interactions when the atom has a Rydberg electron attached to a hyperfine split core state. This situation is relevant for some of the rare earth and alkaline earth atoms that have been proposed for experiments on Rydberg-Rydberg interactions. For the rare earth atoms, the core electrons can have a very substantial total angular momentum, J, and a non-zero nuclear spin, I. In the alkaline earth atoms there is a single, s, core electron whose spin can couple to a non-zero nuclear spin for odd isotopes. The resulting hyperfine splitting of the core state can lead to substantial mixing between the Rydberg series attached to different thresholds. Compared to the unperturbed Rydberg series of the alkali atoms, the series perturbations and near degeneracies from the different parity states could lead to qualitatively different behavior for single atom Rydberg properties (polarizability, Zeeman mixing and splitting, etc) as well as Rydberg-Rydberg interactions (C5 and C6 matrices).

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“…Furthermore Rydberg atoms have been used in the study of strongly correlated plasmas [9], in quantum non-linear optics [10,11], in ultracold chemistry (e.g. Rydberg molecules) [12], and in the study of exotic quantum phases [13,14] and many-body entangled states [15,16].…”

Section: Introductionmentioning

confidence: 99%

Single-photon source based on Rydberg exciton blockade

Khazali

Heshami

Simon

2017

J. Phys. B: At. Mol. Opt. Phys.

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Abstract. We propose to implement a new kind of solid-state single-photon source based on the recently observed Rydberg blockade effect for excitons in cuprous oxide. The strong interaction between excitons in levels with high principal quantum numbers prevents the creation of more than one exciton in a small crystal. The resulting effective two-level system is a good single-photon source. Our quantitative estimates suggest that GHz rates and values of the second-order correlation function g 2 (0) below the percent level should be simultaneously achievable.

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Large energy superpositions via Rydberg dressing

Cited by 30 publications

References 66 publications

Progress towards macroscopic spin and mechanical superposition via Rydberg interaction

Progress towards macroscopic spin and mechanical superposition via Rydberg interaction

Theory of long-range interactions for Rydberg states attached to hyperfine-split cores

Single-photon source based on Rydberg exciton blockade

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