Teleportation and Entanglement Swapping of Continuous Quantum Variables of Microwave Radiation
arXiv:2501.05537 · doi:10.1103/9cpm-kr4h
Abstract
Quantum communication is needed to build powerful quantum computers and establish reliable quantum networks. At its basis lies the ability to generate and distribute entanglement to separate quantum systems, which can be used to run remote quantum operations on them or teleport quantum states from one system to another with the help of classical channels. To this end, it is useful to harness the resource of continuous-variable (CV) entanglement since it can be efficiently and unconditionally produced by squeezing light in a nonlinear medium and can be easily manipulated, distributed, and measured using standard components. While various aspects of CV-based quantum communication have been successfully demonstrated in the optical domain, some key capabilities, such as entanglement swapping, have been lacking in the microwave domain. Here, we demonstrate three key elements of CV-based microwave quantum communication, (1) a Josephson mixer operating as nondegenerate two-mode entangler with maximum measured logarithmic negativity E_N=1.5, (2) a quantum teleportation apparatus, capable of teleporting vacuum and coherent states with a maximum fidelity of 73%, which exceeds the 50% classical limit and is mainly limited by intermediate losses in the setup, and (3) an entanglement swapping system which generates entanglement between two remote noninteracting modes via entanglement swapping operations applied to input vacuum and coherent states with maximum measured logarithmic negativity E_N=0.53. Such hardware-efficient CV entanglement building blocks that are based on nondegenerate Josephson mixers could enable wide-ranging applications in modular quantum computation, quantum cryptography, and quantum communication.
References in corpus (82)
- Experimental quantum teleportation
- A computable measure of entanglement
- Quantum information with continuous variables
- Gaussian Quantum Information
- Peres-Horodecki separability criterion for continuous variable systems
- Inseparability criterion for continuous variable systems
- Experimental Realization of Teleporting an Unknown Pure Quantum State via Dual Classical and Einstein-Podolski-Rosen Channels
- Continuous variable quantum cryptography using coherent states
- Quantum key distribution using gaussian-modulated coherent states
- Heralded entanglement between solid-state qubits separated by 3 meters
- Detection of 15 dB Squeezed States of Light and their Application for the Absolute Calibration of Photoelectric Quantum Efficiency
- Advances in Quantum Teleportation
- Teleportation of Quantum States
- Quantum technologies with hybrid systems
- How to factor 2048 bit RSA integers in 8 hours using 20 million noisy qubits
- Amplification and squeezing of quantum noise with a tunable Josephson metamaterial
- Quantum repeaters: From quantum networks to the quantum internet
- Phase preserving amplification near the quantum limit with a Josephson Ring Modulator
- High-threshold and low-overhead fault-tolerant quantum memory
- The Future of Quantum Computing with Superconducting Qubits
- Experimental investigation of continuous variable quantum teleportation
- Entanglement of formation for symmetric Gaussian states
- Deterministic quantum teleportation of photonic quantum bits by a hybrid technique
- Symplectic invariants, entropic measures and correlations of Gaussian states
- Optimal universal quantum cloning and state estimation
- Quantum back-action of variable-strength measurement
- Generating Entangled Microwave Radiation Over Two Transmission Lines
- Dispersive magnetometry with a quantum limited SQUID parametric amplifier
- Photon State Tomography for Two-Mode Correlated Itinerant Microwave Fields
- Quantum teleportation of light beams
- Microwave Quantum Link between Superconducting Circuits Housed in Spatially Separated Cryogenic Systems
- On-demand quantum state transfer and entanglement between remote microwave cavity memories
- Experimental Demonstration of Unconditional Entanglement Swapping for Continuous Variables
- High-fidelity teleportation beyond the no-cloning limit and entanglement swapping for continuous variables
- Microwave quantum illumination using a digital receiver
- Teleportation of Nonclassical Wave Packets of light
- Deterministic multi-qubit entanglement in a quantum network
- Quantum limited amplification and entanglement in coupled nonlinear resonators
- Path Entanglement of Continuous-Variable Quantum Microwaves
- Quantum benchmark for storage and transmission of coherent states
- Strong environmental coupling in a Josephson parametric amplifier
- Broadband parametric amplification with impedance engineering: Beyond the gain-bandwidth product
- Widely tunable, non-degenerate three-wave mixing microwave device operating near the quantum limit
- Superconducting quantum node for entanglement and storage of microwave radiation
- Quantum versus Classical Domains for Teleportation with Continuous Variables
- Squeezing with a flux-driven Josephson parametric amplifier
- Continuous-wave 6-dB-squeezed light with 2.5-THz-bandwidth from single-mode PPLN waveguide
- Non-degenerate, three-wave mixing with the Josephson ring modulator
- Entanglement swapping between discrete and continuous variables
- Experimental demonstration of quantum teleportation of a squeezed state
- Dynamics of Nonlocality for A Two-Mode Squeezed State in Thermal Environment
- Josephson Amplifier for Qubit Readout
- Entangling microwaves with optical light
- Intracity quantum communication via thermal microwave networks
- Broadband Squeezed Microwaves and Amplification with a Josephson Traveling-Wave Parametric Amplifier
- Entanglement of formation for an arbitrary two-mode Gaussian state
- Hertz-rate metropolitan quantum teleportation
- Observation of two-mode squeezing in a traveling wave parametric amplifier
- Broadband teleportation
- Experimental quantum teleportation of propagating microwaves
- Remote entanglement via adiabatic passage using a tunably-dissipative quantum communication system
- Synthesis of parametrically-coupled networks
- Experimental characterization of Gaussian quantum communication channels
- Quantum teleportation of propagating quantum microwaves
- Modular quantum processor with an all-to-all reconfigurable router
- Theory of remote entanglement via quantum-limited phase-preserving amplification
- Loss asymmetries in quantum travelling wave parametric amplifiers
- Design of an on-chip superconducting microwave circulator with octave bandwidth
- Optimizing Josephson-Ring-Modulator-based Josephson Parametric Amplifiers via full Hamiltonian control
- High-speed quantum radio-frequency-over-light communication
- Resonance-dominant optomechanical entanglement in open quantum systems
- Remote entanglement stabilization and distillation by quantum reservoir engineering
- High-fidelity qubit readout using interferometric directional Josephson devices
- Long-distance distribution of qubit-qubit entanglement using Gaussian-correlated photonic beams
- Josephson parametric circulator with same-frequency signal ports, 200 MHz bandwidth, and high dynamic range
- Generation and structuring of multipartite entanglement in Josephson parametric system
- Cryogenic microwave link for quantum local area networks
- Broadband CPW-based impedance-transformed Josephson parametric amplifier
- Entangling remote microwave quantum computers with hybrid entanglement swap and variational distillation
- Time-multiplexed amplification in a hybrid-less and coil-less Josephson parametric converter
- Remote Cross-resonance Gate between Superconducting Fixed-frequency Qubits
- Squeezing Limit of the Josephson Ring Modulator as a Non-Degenerate Parametric Amplifier
Cited by in corpus (4)
- Hybrid Analog Teleportation-Direct Transmission in Noisy Bosonic Channels
- Remote magnon-phonon entanglement in the waveguide-magnomechanics
- Nondegenerate Josephson Mixers with Enhanced Bandwidth and Saturation Power for Quantum Signal Amplification and Transduction
- Optomagnonic continuous-variable quantum teleportation enhanced by non-Gaussian distillation