Journal ArticleDOI
Stark-switching technique for fast quantum gates in Rydberg atoms
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TLDR
In this article, an experiment on Ramsey interferometry of the 37S 1/2 → 37P 1 /2 microwave transition in sodium Rydberg atoms has been performed.Abstract:
An experiment on Ramsey interferometry of the 37S1/2 → 37P1/2 microwave transition in sodium Rydberg atoms has been performed. Interaction of Rydberg atoms with a cw microwave radiation was effectively controlled by a pulse of weak (<1 V cm−1) electric field, that manipulated the transition frequency near 70 050 MHz. The pulse detuned the microwave radiation from exact resonance, and induced additional phases to the wavefunctions of Rydberg states due to the quadratic Stark shifts. As a result, the Ramsey fringes were observable both on scanning the frequency of the microwave field and on scanning the strength of the electric field pulse. The experiment confirmed that this Stark-switching technique provides a fast and effective control of the atom–light interactions, and preserves the atomic coherence. Possible applications of this technique to experiments on quantum computers are discussed.read more
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Journal ArticleDOI
Quantum information with Rydberg atoms
TL;DR: Rydberg atoms with principal quantum number $n⪢1$ have exaggerated atomic properties including dipole-dipole interactions that scale as ${n}^{4}$ and radiative lifetimes that scale at least{n}−3}$ as mentioned in this paper, and it was proposed a decade ago to implement quantum gates between neutral atom qubits.
Journal ArticleDOI
An experimental and theoretical guide to strongly interacting Rydberg gases
Robert Löw,Hendrik Weimer,Johannes Nipper,Jonathan B. Balewski,Björn Butscher,Hans Peter Büchler,Tilman Pfau +6 more
TL;DR: In this article, experimental and theoretical tools to excite, study and understand strongly interacting Rydberg gases are reviewed, with a focus on the excitation of dense ultracold atomic samples close to, or within quantum degeneracy, high-lying S-states of rubidium.
Journal ArticleDOI
Spectroscopy of cold rubidium Rydberg atoms for applications in quantum information
I. I. Ryabtsev,I. I. Ryabtsev,I. I. Beterov,I. I. Beterov,D. B. Tretyakov,D. B. Tretyakov,V. M. Entin,V. M. Entin,E. A. Yakshina,E. A. Yakshina +9 more
TL;DR: A review of the experimental and theoretical work performed by the authors at the Rzhanov Institute of Semiconductor Physics SB RAS and Novosibirsk State University on laser and microwave spectroscopy of cold Rb Rydberg atoms in a magneto-optical trap and on their possible applications in quantum information can be found in this article.
Journal ArticleDOI
Precision measurements of quantum defects in the $n$P$_{3/2}$ Rydberg States of ${}^{85}$Rb
TL;DR: In this article, the absolute frequencies of the P$3/2} states for principal quantum numbers were reported with a three-step laser excitation scheme, and compared with known frequency measurements as a test of measurement accuracy.
Journal ArticleDOI
The Chemi-Ionization Processes in Slow Collisions of Rydberg Atoms with Ground State Atoms: Mechanism and Applications
TL;DR: In this paper, the history and the current state of research of the chemi-ionization processes in atom-Rydberg atom collisions is presented and the principal assumptions of the model of such processes based on the dipole resonance mechanism, as well as the problems of stochastic ionization in atom collisions, are exposed.
References
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Book ChapterDOI
Quantum Mechanics of One- and Two-Electron Atoms
Hans A. Bethe,Edwin E. Salpeter +1 more
TL;DR: The theory of atoms with one or two electrons is the simplest and most completely treated field of application of quantum mechanics as mentioned in this paper, and it is one of the simplest fields of application for quantum mechanics.
Journal ArticleDOI
Manipulating quantum entanglement with atoms and photons in a cavity
TL;DR: The concept of entanglement plays an essential role in quantum physics as mentioned in this paper, and it is also essential to understand decoherence, the process accounting for the classical appearance of the macroscopic world.
Journal ArticleDOI
Dipole blockade and quantum information processing in mesoscopic atomic ensembles.
Mikhail D. Lukin,Michael Fleischhauer,Robin Côté,Luming Duan,Dieter Jaksch,J. I. Cirac,Peter Zoller +6 more
TL;DR: A technique for manipulating quantum information stored in collective states of mesoscopic ensembles by optical excitation into states with strong dipole-dipole interactions that can be employed for controlled generation of collective atomic spin states as well as nonclassical photonic states and for scalable quantum logic gates is described.
Journal ArticleDOI
Laser cooling and trapping
TL;DR: In this article, the basic physical effects leading to radiation-induced forces are reviewed and a simple derivation of the mathematical expressions for the classical light forces is given, and the influence of quantum fluctuations is demonstrated and the possibilities for trapping neutral particles are discussed.
Journal ArticleDOI
Fast quantum gates for neutral atoms
TL;DR: Several schemes for implementing a fast two-qubit quantum gate for neutral atoms with the gate operation time much faster than the time scales associated with the external motion of the atoms in the trapping potential are proposed.