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Verhandlungen der Deutschen Physikalischen Gesellschaft

Microwave cavity QED experiment with lower Rydberg atomic state

Pierre Thoumany, Linas Urbonas, Theodor W. Hänsch, Thomas Becker

Published Jan 1, 2010• 0 citations
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Cavity quantum electrodynamics: a review of Rydberg atom-microwave experiments on entanglement and decoherence

S. Haroche

AIP conference proceedings•Jan 1, 1999•19 citations

Rydberg Atoms and Cavity Quantum Electrodynamics

Daniel Kleppner

Springer eBooks•Jan 1, 1984•0 citations

Schemes for generating the cluster states in microwave cavity QED

XuBo Zou, Wolfgang M. Mathis

We propose two experimental schemes to generate the cluster states in the context of microwave cavity quantum electrodynamics (QED). In the first scheme to prepare many cavities into the cluster states, we encode the vacuum state and one-photon state of the microwave cavity as the logic zero and one of the qubits. The second scheme is to prepare many atoms into the cluster states, where qubits are represented by the states of Rydberg atoms. Both schemes require the resonant atom-cavity interaction so that the quantum dynamics operates at a high speed, which is important in view of decoherence.

Physical Review A•Jul 12, 2005•105 citations

Testing the symmetrization postulate for photons using Rydberg atoms and cavity QED

Christopher C. Gerry, Robert C. Hilborn

We propose a test for small violations of the symmetrization postulate (SP) for microwave photons using Rydberg atoms in cavity QED. The method requires sequences of two properly prepared and manipulated atoms interacting with the cavity field in a dispersive manner. The cavity field is assumed to be prepared in a q-deformed coherent state. In the case when the SP holds, a sequence of two atoms would always be detected in the same state, but a small violation yields a nonzero probability that the second atom will be found in a different state. We make some estimates of the feasibility of the proposed experiment.

Physical Review A•Jun 1, 1997•14 citations

Experiments in cavity QED and with trapped ions

Christopher C. Gerry, P. L. Knight

In this chapter, we discuss two more experimental realizations of quantum optical phenomena, namely the interaction of an effective two-level atom with a quantized electromagnetic field in a high Q microwave cavity, the subject usually referred to as cavity QED, or sometimes CQED, and in the quantized motion of a trapped ion. Strictly speaking, these experiments are not optical, but they do realize interactions of exactly the type that are of interest in quantum optics, namely the Jaynes–Cummings interaction between a two-level system (an atom) and a bosonic degree of freedom, a single-mode cavity field in the case of a microwave cavity, and a vibrational mode of the center-of-mass motion of a trapped ion, the quanta being phonons in this case. We shall begin with a description of the useful properties of the so-called Rydberg atoms that are used in the microwave CQED experiments, proceed to discuss some general considerations of the radiative behavior of atoms in cavities, the CQED realization of the Jaynes–Cummings model, and then discuss the use of the dispersive, highly off-resonant, version of the model to generate superpositions of coherent states, i.e. the Schrödinger cat states of the type discussed in Chapters 7 and 9 for traveling wave optical fields but this time for a microwave cavity field. Finally, we discuss the realization of the Jaynes–Cummings interaction in the vibrational motion of a trapped ion.

Cambridge University Press eBooks•Oct 28, 2004•0 citations

Microwave spectroscopy of high Rydberg atoms

Michio Takami, H. Maeda, Yukari Matsuo +3 more

•Apr 1, 1993•0 citations
We propose two experimental schemes to generate the cluster states in the context of microwave cavity quantum electrodynamics (QED). In the first scheme to prepare many cavities into the cluster states, we encode the vacuum state and one-photon state of the microwave cavity as the logic zero and one of the qubits. The second scheme is to prepare many atoms into the cluster states, where qubits are represented by the states of Rydberg atoms. Both schemes require the resonant atom-cavity interaction so that the quantum dynamics operates at a high speed, which is important in view of decoherence.
We propose a test for small violations of the symmetrization postulate (SP) for microwave photons using Rydberg atoms in cavity QED. The method requires sequences of two properly prepared and manipulated atoms interacting with the cavity field in a dispersive manner. The cavity field is assumed to be prepared in a q-deformed coherent state. In the case when the SP holds, a sequence of two atoms would always be detected in the same state, but a small violation yields a nonzero probability that the second atom will be found in a different state. We make some estimates of the feasibility of the proposed experiment.
In this chapter, we discuss two more experimental realizations of quantum optical phenomena, namely the interaction of an effective two-level atom with a quantized electromagnetic field in a high Q microwave cavity, the subject usually referred to as cavity QED, or sometimes CQED, and in the quantized motion of a trapped ion. Strictly speaking, these experiments are not optical, but they do realize interactions of exactly the type that are of interest in quantum optics, namely the Jaynes–Cummings interaction between a two-level system (an atom) and a bosonic degree of freedom, a single-mode cavity field in the case of a microwave cavity, and a vibrational mode of the center-of-mass motion of a trapped ion, the quanta being phonons in this case. We shall begin with a description of the useful properties of the so-called Rydberg atoms that are used in the microwave CQED experiments, proceed to discuss some general considerations of the radiative behavior of atoms in cavities, the CQED realization of the Jaynes–Cummings model, and then discuss the use of the dispersive, highly off-resonant, version of the model to generate superpositions of coherent states, i.e. the Schrödinger cat states of the type discussed in Chapters 7 and 9 for traveling wave optical fields but this time for a microwave cavity field. Finally, we discuss the realization of the Jaynes–Cummings interaction in the vibrational motion of a trapped ion.