Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Physical Review A

Generation of highly entangled field states in multiple micromaser cavities

János A. Bergou, Mark S. Hillery

Published Jun 1, 1997• 47 citations
Publisher

Abstract

Highly entangled states of more than one quantum system are necessary for tests of local hidden-variable theories and of quantum mechanics itself. We show how to produce field states, which are located in several cavities and are highly entangled, by sending apropriately prepared atoms through the cavities. We discuss both a two-cavity and a three-cavity state in which either each cavity is in a one-photon number state or each is in the vacuum state. Finally, a test of quantum mechanics using the two-cavity state is presented.

DOI
10.1103/physreva.55.4585

Related papers

Entangled fields in multiple cavities as a testing ground for quantum mechanics

János A. Bergou

Entangled states provide the necessary tools for conceptual tests of quantum mechanics and other alternative theories. These tests include local hidden variables theories, pre- and post-selective quantum mechanics, QND measurements, complementarity, and tests of mechanics itself against, e.g. the so-called causal communication constraint. We show how to produce nonlocal entangled states of multiple cavity fields. We first discuss two-cavity entanglement, namely the generation of the Bell basis states for this system, when there is at most one photon in either of the cavities. We then discuss a straightforward generalization to similar N-cavity states. These states can be produced by sending appropriately prepared atoms through the cavities. As applications we briefly review a proposal to test quantum mechanics against the causal communication constraint using the two-cavity state and a test of pre- and post-selective quantum mechanics using a three-cavity state and the close connection of the latter to the consistent histories interpretation. Finally we point out the relation between these schemes and the schemes suggested for quantum computing, teleportation and quantum copying.

Journal of Modern Optics•Oct 1, 1997•12 citations

Entangled fields in multiple cavities as a testing ground for quantum mechanics

János A. Bergou

Entangled states provide the necessary tools for conceptual tests of quantum mechanics and other alternative theories. These tests include local hidden variables theories, pre- and post-selective quantum mechanics, QND measurements, complementarity, and tests of mechanics itself against, e.g. the so-called causal communication constraint. We show how to produce nonlocal entangled states of multiple cavity fields. We first discuss two-cavity entanglement, namely the generation of the Bell basis states for this system, when there is at most one photon in either of the cavities. We then discuss a straightforward generalization to similar N-cavity states. These states can be produced by sending appropriately prepared atoms through the cavities. As applications we briefly review a proposal to test quantum mechanics against the causal communication constraint using the two-cavity state and a test of pre- and post-selective quantum mechanics using a three-cavity state and the close connection of the latter to the consistent histories interpretation. Finally we point out the relation between these schemes and the schemes suggested for quantum computing, teleportation and quantum copying.

Journal of Modern Optics•Oct 1, 1997•4 citations

Generation of Multicavity Entangled States with a Single Three-Level Atom

Shi-Biao Zheng

A simple scheme is proposed for the generation of maximally entangled states for several separated cavities, in which each cavity is in a one-photon state or in the vacuum state. In the scheme a laddertype three-level atom is sent through the cavities and additional classical fields. The whole system finally evolves into a state, which is given by the product of the highly entangled field state with an atomic state.

Australian Journal of Physics•Apr 27, 2001•4 citations

Preparation of macroscopic superpositions in many-atom systems

J. I. Cirac, P. Zoller

We propose a technique to prepare two or more atoms in certain entangled states, based on the interaction of the atoms with a cavity mode. After the atomic state is prepared, the cavity mode is left in the vacuum state, so dissipation does not affect the generated entangled states. These states could be used for improved tests that challenge local realistic theories, and to examine related phenomena, which, thus far, have been realized only with photons.

Physical Review A•Oct 1, 1994•199 citations

Generation of multipartite entangled states by cavity QED

Zhang Ying-Jie, Ren Ting-Qi, Yun‐Jie Xia

We propose the methods of generating multipartite entanglement by considering the interaction of a system of N two-level atoms in M cavities of high quality factor with a strong classical driving field. It is shown that, with the cavity detuning, the applied driving field detuning and vacuum Rabi coupling, we can produce an entangled coherent state in two single-mode cavities and generate the entangled coherent cluster states in two bimodal vacuum cavities. Tuning these parameters also allows us to acquire the anti-Jaynes–Cummings (AJC) interaction, with which we can generate the maximally two-photon entangled states, and the two-atom and the two-photon entangled cluster states.

Chinese Physics B•Jun 1, 2008•4 citations

Photon-number-state generation with a single two-level atom in a cavity: a proposal

P. Domokos, M. Brune, J. M. Raimond +2 more

A single two-level atom can be used to prepare an arbitrary photon number state (Fock state) in a high Q cavity . The atom undergoes a controlled succession of interactions with two cavity modes. One of them contains a coherent field. The atom transfers photons one by one from this field to the initially empty second mode. The scheme can be extended to prepare a quantum superposition of the vacuum with a Fock state, a highly non-classical situation. We discuss the feasibility of the experiment with our present Rydberg-atom cavity QED set-up.

The European Physical Journal D•Jan 1, 1998•55 citations
Highly entangled states of more than one quantum system are necessary for tests of local hidden-variable theories and of quantum mechanics itself. We show how to produce field states, which are located in several cavities and are highly entangled, by sending apropriately prepared atoms through the cavities. We discuss both a two-cavity and a three-cavity state in which either each cavity is in a one-photon number state or each is in the vacuum state. Finally, a test of quantum mechanics using the two-cavity state is presented.
Entangled states provide the necessary tools for conceptual tests of quantum mechanics and other alternative theories. These tests include local hidden variables theories, pre- and post-selective quantum mechanics, QND measurements, complementarity, and tests of mechanics itself against, e.g. the so-called causal communication constraint. We show how to produce nonlocal entangled states of multiple cavity fields. We first discuss two-cavity entanglement, namely the generation of the Bell basis states for this system, when there is at most one photon in either of the cavities. We then discuss a straightforward generalization to similar N-cavity states. These states can be produced by sending appropriately prepared atoms through the cavities. As applications we briefly review a proposal to test quantum mechanics against the causal communication constraint using the two-cavity state and a test of pre- and post-selective quantum mechanics using a three-cavity state and the close connection of the latter to the consistent histories interpretation. Finally we point out the relation between these schemes and the schemes suggested for quantum computing, teleportation and quantum copying.
Entangled states provide the necessary tools for conceptual tests of quantum mechanics and other alternative theories. These tests include local hidden variables theories, pre- and post-selective quantum mechanics, QND measurements, complementarity, and tests of mechanics itself against, e.g. the so-called causal communication constraint. We show how to produce nonlocal entangled states of multiple cavity fields. We first discuss two-cavity entanglement, namely the generation of the Bell basis states for this system, when there is at most one photon in either of the cavities. We then discuss a straightforward generalization to similar N-cavity states. These states can be produced by sending appropriately prepared atoms through the cavities. As applications we briefly review a proposal to test quantum mechanics against the causal communication constraint using the two-cavity state and a test of pre- and post-selective quantum mechanics using a three-cavity state and the close connection of the latter to the consistent histories interpretation. Finally we point out the relation between these schemes and the schemes suggested for quantum computing, teleportation and quantum copying.
We propose the methods of generating multipartite entanglement by considering the interaction of a system of N two-level atoms in M cavities of high quality factor with a strong classical driving field. It is shown that, with the cavity detuning, the applied driving field detuning and vacuum Rabi coupling, we can produce an entangled coherent state in two single-mode cavities and generate the entangled coherent cluster states in two bimodal vacuum cavities. Tuning these parameters also allows us to acquire the anti-Jaynes–Cummings (AJC) interaction, with which we can generate the maximally two-photon entangled states, and the two-atom and the two-photon entangled cluster states.
A single two-level atom can be used to prepare an arbitrary photon number state (Fock state) in a high Q cavity . The atom undergoes a controlled succession of interactions with two cavity modes. One of them contains a coherent field. The atom transfers photons one by one from this field to the initially empty second mode. The scheme can be extended to prepare a quantum superposition of the vacuum with a Fock state, a highly non-classical situation. We discuss the feasibility of the experiment with our present Rydberg-atom cavity QED set-up.