High-Purity Entanglement of Hot Propagating Modes Using Nonreciprocity
arXiv:2209.06847 · doi:10.1103/PRXQuantum.4.020344
Abstract
Distributed quantum information processing and communication protocols demand the ability to generate entanglement among propagating modes. However, thermal fluctuations can severely limit the fidelity and purity of propagating entangled states, especially for low-frequency modes relevant for radio-frequency (RF) signals. Here we propose nonreciprocity as a resource to render continuous-variable entanglement of propagating modes robust against thermal fluctuations. By utilising a cold-engineered reservoir we break the symmetry of reciprocity in a standard two-mode squeezing interaction between a low- and a high-frequency mode, and show that the rerouting of thermal fluctuations allows the generation of flying entangled states with high purity. Our approach requires only pairwise Gaussian interactions and is thus ideal for parametric circuit QED implementations.
arXiv comment9+8 pages, 8 figures. References added, typos corrected, two new sections added to appendix, two new figures added in appendix
References in corpus (52)
- Quantum entanglement
- The Quantum Internet
- A computable measure of entanglement
- Gaussian Quantum Information
- Peres-Horodecki separability criterion for continuous variable systems
- Quantum state transfer and entanglement distribution among distant nodes in a quantum network
- The logarithmic negativity: A full entanglement monotone that is not convex
- Optomechanical entanglement between a movable mirror and a cavity field
- Thermal diode: Rectification of heat flux
- Feasible Entanglement Purification for Quantum Communication
- Transforming heat transfer with thermal metamaterials and devices
- Controlling the energy flow in nonlinear lattices: a model for a thermal rectifier
- Experimental realization of optomechanically induced non-reciprocity
- Generalized nonreciprocity in an optomechanical circuit via synthetic magnetism and reservoir engineering
- Nonreciprocal Photon Transmission and Amplification via Reservoir Engineering
- Squeezing as an irreducible resource
- Reservoir-engineered entanglement in optomechanical systems
- Non-Reciprocal Brillouin Scattering Induced Transparency
- Nonreciprocity and magnetic-free isolation based on optomechanical interactions
- Brillouin scattering induced transparency and non-reciprocal light storage
- Robust entanglement of a micromechanical resonator with output optical fields
- Nonreciprocal reconfigurable microwave optomechanical circuit
- Phonon-mediated quantum state transfer and remote qubit entanglement
- Entanglement Percolation in Quantum Networks
- Quantum thermal transistor
- Noiseless nonreciprocity in a parametric active device
- 3-Wave Mixing Josephson Dipole Element
- The reconfigurable Josephson circulator/directional amplifier
- Mechanical On-Chip Microwave Circulator
- Nonreciprocal control and cooling of phonon modes in an optomechanical system
- Nonreciprocal microwave signal processing with a Field-Programmable Josephson Amplifier
- Entanglement purification of Gaussian continuous variable quantum states
- Stationary Entangled Radiation from Micromechanical Motion
- Demonstration of efficient nonreciprocity in a microwave optomechanical circuit
- Fundamentals of optical non-reciprocity based on optomechanical coupling
- Widely tunable on-chip microwave circulator for superconducting quantum circuits
- Graph-based analysis of nonreciprocity in coupled-mode systems
- Bipartite and tripartite output entanglement in 3-mode optomechanical systems
- Observation of Entanglement Between Itinerant Microwave Photons and a Superconducting Qubit
- Kerr-free three-wave mixing in superconducting quantum circuits
- Entanglement of Propagating Optical Modes via a Mechanical Interface
- Experimental demonstration of continuous variable purification of squeezed states
- Realization of directional amplification in a microwave optomechanical device
- Manipulating the flow of thermal noise in quantum devices
- Non-reciprocal quantum interactions and devices via autonomous feed-forward
- Observation and stabilization of photonic Fock states in a hot radio-frequency resonator
- Optimal Gaussian Entanglement Swapping
- Multiparametric Amplification and Qubit Measurement with a Kerr-free Josephson Ring Modulator
- Entangling two distant non-interacting microwave modes
- Stationary quantum entanglement between a massive mechanical membrane and a low frequency LC circuit
- Cooling photon-pressure circuits into the quantum regime
- Parametrically enhanced interactions and non-trivial bath dynamics in a photon-pressure Kerr amplifier