Generating quantum discord between two distant Bose-Einstein condensates with Bell-like detection
arXiv:1503.05291 · doi:10.1364/JOSAB.32.000798
Abstract
We propose a technique that enables the creation of quantum discord between two distant nodes, each containing a cavity consist of the Bose-Einstein condensate, by applying a non-ideal Bell-like detection on the output modes of optical cavities. We find the covariance matrix of the system after the non-ideal Bell-like detection, showing explicitly that one enables manipulation of the quantum correlations, and particularly quantum discord, between remote Bose-Einstein condensates. We also find that the non-ideal Bell-like detection can create entanglement between distant Bose-Einstein condensates at the two remote sites
References in corpus (31)
- A computable measure of entanglement
- Quantum information with continuous variables
- Gaussian Quantum Information
- Introducing Quantum Discord
- Extremal entanglement and mixedness in continuous variable systems
- Cavity Opto-Mechanics with a Bose-Einstein Condensate
- Gaussian quantum discord
- Quantum discord as resource for remote state preparation
- Dense Coding for Continuous Variables
- Purification via entanglement swapping and conserved entanglement
- Robust entanglement of a micromechanical resonator with output optical fields
- Experimental delayed-choice entanglement swapping
- Experimental Demonstration of Unconditional Entanglement Swapping for Continuous Variables
- High-fidelity teleportation beyond the no-cloning limit and entanglement swapping for continuous variables
- Einselection and Decoherence from an Information Theory Perspective
- Cold atom dynamics in a quantum optical lattice potential
- Macroscopic Entanglement by Entanglement Swapping
- Entanglement Between Photons that have Never Coexisted
- Self-organization of atoms in a cavity field: threshold, bistability and scaling laws
- Hamiltonian chaos in a coupled BEC -- optomechanical cavity system
- The Quantum State of an Ideal Propagating Laser Field
- Optimality of Gaussian Discord
- Entanglement swapping with local certification: Application to remote micromechanical resonators
- Quantum noise of a Bose-Einstein condensate in an optical cavity, correlations and entanglement
- Controllability of optical bistability, cooling and entanglement in hybrid cavity optomechanical systems by nonlinear atom-atom interaction
- Continuous-variable dense coding by optomechanical cavities
- Nonlinear effects of atomic collisions on the optomechanical properties of a Bose-Einstein condensate in an optical cavity
- Covariance matrices under Bell-like detections
- Time-Continuous Bell Measurements
- Steady-state entanglement activation in optomechanical cavities
- Time-separated entangled light pulses from a single-atom emitter