Entangling two distant non-interacting microwave modes

Abstract

We propose a protocol able to prepare two remote and initially uncorrelated microwave modes in an entangled stationary state, which is certifiable using only local optical homodyne measurements. The protocol is an extension of continuous variable entanglement swapping, and exploits two hybrid quadripartite opto-electro-mechanical systems in which a nanomechanical resonator acts as a quantum interface able to entangle optical and microwave fields. The proposed protocol allows to circumvent the problems associated with the fragility of microwave photons with respect to thermal noise and may represent a fundamental tool for the realization of quantum networks connecting distant solid-state and superconducting qubits, which are typically manipulated with microwave fields. The certifying measurements on the optical modes guarantee the success of entanglement swapping without the need of performing explicit measurements on the distant microwave fields.

7 pages, 3 figures; to appear in the special issue "Quantum and Hybrid Mechanical Systems - From Fundamentals to Applications" in Annalen der Physik

References in corpus (31)

• A computable measure of entanglement
• Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
• The logarithmic negativity: A full entanglement monotone that is not convex
• Strong dispersive coupling of a high finesse cavity to a micromechanical membrane
• Bidirectional and efficient conversion between microwave and optical light
• Realization of Three-Qubit Quantum Error Correction with Superconducting Circuits
• Observation of quantum state collapse and revival due to the single-photon Kerr effect
• Phase noise measurement in a cavity with a movable mirror undergoing quantum Brownian motion
• Preparation and Detection of a Mechanical Resonator Near the Ground State of Motion
• Optical detection of radio waves through a nanomechanical transducer
• Using interference for high fidelity quantum state transfer in optomechanics
• Strong and Tunable Nonlinear Optomechanical Coupling in a Low-Loss System
• Robust entanglement of a micromechanical resonator with output optical fields
• Deterministic entanglement of superconducting qubits by parity measurement and feedback
• Adiabatic State Conversion and Pulse Transmission in Optomechanical Systems
• Computing prime factors with a Josephson phase qubit quantum processor
• Reversible optical to microwave quantum interface
• Experimental Demonstration of Unconditional Entanglement Swapping for Continuous Variables
• High-fidelity teleportation beyond the no-cloning limit and entanglement swapping for continuous variables
• Multipartite entanglement in three-mode Gaussian states of continuous variable systems: Quantification, sharing structure and decoherence
• Entangling optical and microwave cavity modes by means of a nanomechanical resonator
• Optical wavelength conversion of quantum states with optomechanics
• Macroscopic Entanglement by Entanglement Swapping
• A chip-scale integrated cavity-electro-optomechanics platform
• Laser cooling and optical detection of excitations in a LC electrical circuit
• Entanglement swapping with local certification: Application to remote micromechanical resonators
• Radiation Pressure Induced Einstein-Podolsky-Rosen Paradox
• Optomechanical sideband cooling of a thin membrane within a cavity
• Continuous variable entanglement swapping and its local certification: entangling distant mechanical modes
• Optimal Gaussian Entanglement Swapping
• Entanglement in quantum information theory

Cited by in corpus (10)

• Magnetostrictively induced stationary entanglement between two microwave fields
• Satellite-Based Continuous-Variable Quantum Communications: State-of-the-Art and a Predictive Outlook
• Cavity piezomechanical strong coupling and frequency conversion on an aluminum nitride chip
• Quantum teleportation of propagating quantum microwaves
• Large Distance Continuous Variables Communication with Concatenated Swaps
• Quantum Entanglement Distribution in Next-Generation Wireless Communication Systems
• High-Purity Entanglement of Hot Propagating Modes Using Nonreciprocity
• Optomechanical Entanglement of Remote Microwave Cavities
• Entanglement Thresholds of Doubly-Parametric Quantum Transducers
• Continuous-variable pairwise entanglement based on optoelectromechanical system