Manipulating mesoscopic multipartite entanglement with atom-light interfaces
arXiv:0907.4261 · doi:10.1103/PhysRevA.80.062304
Abstract
Entanglement between two macroscopic atomic ensembles induced by measurement on an ancillary light system has proven to be a powerful method for engineering quantum memories and quantum state transfer. Here we investigate the feasibility of such methods for generation, manipulation and detection of genuine multipartite entanglement between mesoscopic atomic ensembles. Our results extend in a non trivial way the EPR entanglement between two macroscopic gas samples reported experimentally in [B. Julsgaard, A. Kozhekin, and E. Polzik, Nature {\bf 413}, 400 (2001)]. We find that under realistic conditions, a second orthogonal light pulse interacting with the atomic samples, can modify and even reverse the entangling action of the first one leaving the samples in a separable state.
arXiv comment8 pages, 6 figures
References in corpus (21)
- A computable measure of entanglement
- Quantum information with continuous variables
- Inseparability criterion for continuous variable systems
- Experimental long-lived entanglement of two macroscopic objects
- Experimental demonstration of quantum memory for light
- Multipartite entanglement for continuous variables: A quantum teleportation network
- Detecting genuine multipartite continuous-variable entanglement
- Quantum communication between atomic ensembles using coherent light
- Separability and distillability of multiparticle quantum systems
- Experimental generation of four-mode continuous-variable cluster states
- Building Gaussian Cluster States by Linear Optics
- Separability Properties of Three-mode Gaussian States
- Quantum Non-Demolition Detection of Strongly Correlated Systems
- Interferometer-Type Structures for Guided Atoms
- Efficient quantum memory and entanglement between light and an atomic ensemble using magnetic fields
- Multimode entanglement of light and atomic ensembles via off-resonant coherent forward scattering
- Quantum polarization spectroscopy of correlations in attractive fermionic gases
- Probing spatial spin correlations of ultracold gases by quantum noise spectroscopy
- Coherent manipulation of atomic qubits in optical micropotentials
- Entanglement of two atomic samples by quantum non-demolition measurements
- Dynamics of entanglement between two atomic samples with spontaneous scattering
Cited by in corpus (8)
- Multipartite Entangled Spatial Modes of Ultracold Atoms Generated and Controlled by Quantum Measurement
- Reconfigurable, site-selective manipulation of atomic quantum systems in two-dimensional arrays of dipole traps
- Gaussian conversion protocols for cubic phase state generation
- Composite Cluster States and Alternative Architectures for One- Way Quantum Computation
- Quantum Information with Continuous Variable systems
- Deterministic Gaussian conversion protocols for non-Gaussian single-mode resources
- A continuous-variable formalism for the Faraday atom-light interface
- Beyond pure state entanglement for atomic ensembles