Multipartite Entanglement Swapping and Mechanical Cluster States

Abstract

We present a protocol for generating multipartite quantum correlations across a quantum network with a continuous-variable architecture. An arbitrary number of users possess two-mode entangled states, keeping one mode while sending the other to a central relay. Here a suitable multipartite Bell detection is performed which conditionally generates a cluster state on the retained modes. This cluster state can be suitably manipulated by the parties and used for tasks of quantum communication in a fully optical scenario. More interestingly, the protocol can be used to create a purely-mechanical cluster state starting from a supply of optomechanical systems. We show that detecting the optical parts of optomechanical cavities may efficiently swap entanglement into their mechanical modes, creating cluster states up to 5 modes under suitable cryogenic conditions.

REVTeX. 5 pages. 2 figures. Comments are welcome

References in corpus (19)

• The Quantum Internet
• Optomechanical entanglement between a movable mirror and a cavity field
• Universal Quantum Computation with Continuous-Variable Cluster States
• Quantum technologies with hybrid systems
• Remote quantum entanglement between two micromechanical oscillators
• Entangled massive mechanical oscillators
• State Transfer Between a Mechanical Oscillator and Microwave Fields in the Quantum Regime
• Novel schemes for measurement-based quantum computation
• Localizable Entanglement
• Gaussian measures of entanglement versus negativities: the ordering of two-mode Gaussian states
• Correlation Matrices of Two-Mode Bosonic Systems
• Unitarily localizable entanglement of Gaussian states
• Multistage Entanglement Swapping
• Stationary entanglement between two movable mirrors in a classically driven Fabry-Perot cavity
• Finite size analysis of measurement device independent quantum cryptography with continuous variables
• Entanglement swapping with local certification: Application to remote micromechanical resonators
• Continuous-variable quantum cryptography with an untrusted relay: Detailed security analysis of the symmetric configuration
• Gaussian localizable entanglement
• Design of a quasi-2D photonic crystal optomechanical cavity with tunable, large $x^2$-coupling

Cited by in corpus (1)

• Estimation of squeezing in a nonlinear quadrature of a mechanical oscillator