Generation of pure continuous-variable entangled cluster states of four separate atomic ensembles in a ring cavity

Abstract

A practical scheme is proposed for creation of continuous variable entangled cluster states of four distinct atomic ensembles located inside a high-finesse ring cavity. The scheme does not require a set of external input squeezed fields, a network of beam splitters and measurements. It is based on nothing else than the dispersive interaction between the atomic ensembles and the cavity mode and a sequential application of laser pulses of a suitably adjusted amplitudes and phases. We show that the sequential laser pulses drive the atomic "field modes" into pure squeezed vacuum states. The state is then examined against the requirement to belong to the class of cluster states. We illustrate the method on three examples of the entangled cluster states, the so-called continuous variable linear, square and T-type cluster states.

9 pages, 3 figures

References in corpus (29)

• Quantum information with continuous variables
• Universal Quantum Computation with Continuous-Variable Cluster States
• Proposed realization of the Dicke-model quantum phase transition in an optical cavity QED system
• Experimental demonstration of a BDCZ quantum repeater node
• Quantum Dense Coding Exploiting Bright EPR Beam
• Functional Quantum Nodes for Entanglement Distribution over Scalable Quantum Networks
• One-Way Quantum Computing in the Optical Frequency Comb
• Cluster States for Continuous-Variable Multipartite Entanglement
• Experimental Preparation of Quadripartite Cluster and GHZ Entangled States for Continuous Variables
• Experimental Demonstration of Unconditional Entanglement Swapping for Continuous Variables
• High-fidelity teleportation beyond the no-cloning limit and entanglement swapping for continuous variables
• Experimental generation of four-mode continuous-variable cluster states
• Building Gaussian Cluster States by Linear Optics
• Interfacing Collective Atomic Excitations and Single Photons
• Dynamical quantum phase transitions in the dissipative Lipkin-Meshkov-Glick model and proposed realization in optical cavity QED
• Unconditional two-mode squeezing of separated atomic ensembles
• Deterministic single photons via conditional quantum evolution
• Three-dimensional theory for interaction between atomic ensembles and free-space light
• Experimental demonstration of quantum teleportation of a squeezed state
• Ultracompact Generation of Continuous-Variable Cluster States
• Experimental demonstration of quantum teleportation of broadband squeezing
• Normal mode splitting and mechanical effects of an optical lattice in a ring cavity
• Cold atoms in a high-Q ring-cavity
• Collective spin systems in dispersive optical cavity QED: Quantum phase transitions and entanglement
• Optical Lattice in a High Finesse Ring Resonator
• Teleportation of an atomic ensemble quantum state
• Continuous-Variable Telecloning with Phase-Conjugate Inputs
• Local complementation rule for continuous-variable four-mode unweighted graph states
• Entangled-State Cycles of Atomic Collective-Spin States

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