Bell-state generation for spin qubits via dissipative coupling

Abstract

We theoretically investigate the dynamics of two spin qubits interacting with a magnetic medium. A systematic formal framework for this qubit-magnet hybrid system is developed in terms of the steady-state properties of the magnetic medium. Focusing on the induced dissipative coupling between the spin qubits, we show how a sizable long-lived entanglement can be established via the magnetic environment, in the absence of any coherent coupling. Moreover, we demonstrate that maximally-entangled two-qubit states (Bell states) can be achieved in this scheme when complemented by proper postselection. In this situation, the time evolution of the entanglement is governed by a non-Hermitian Hamiltonian, where dynamical phases are separated by an exceptional point. The resultant Bell state is robust against weak random perturbations and does not require the preparation of a particular initial state. Our study may find applications in quantum information science, quantum spintronics, and for sensing of nonlocal quantum correlations.

arXiv comment18 pages, 5 figures; PRB Letter Editors' Suggestion

References in corpus (74)

• Entanglement of Formation of an Arbitrary State of Two Qubits
• Quantum Computation with Quantum Dots
• Making Sense of Non-Hermitian Hamiltonians
• The nitrogen-vacancy colour centre in diamond
• Bell nonlocality
• Dynamical Decoupling of Open Quantum Systems
• The physics of exceptional points
• Trapped-Ion Quantum Computing: Progress and Challenges
• Quantum States and Phases in Driven Open Quantum Systems with Cold Atoms
• Quantum information processing with superconducting circuits: a review
• Solid-state electronic spin coherence time approaching one second
• Probing condensed matter physics with magnetometry based on nitrogen-vacancy centres in diamond
• Dynamically protected cat-qubits: a new paradigm for universal quantum computation
• Entanglement generated by dissipation and steady state entanglement of two macroscopic objects
• Fault-Tolerant Quantum Dynamical Decoupling
• Confining the state of light to a quantum manifold by engineered two-photon loss
• Cavity Loss Induced Generation of Entangled Atoms
• Colloquium: Spintronics in graphene and other two-dimensional materials
• Environment Induced Entanglement in Markovian Dissipative Dynamics
• Dissipative production of a maximally entangled steady state
• Stabilizing entanglement autonomously between two superconducting qubits
• Hybrid quantum devices and quantum engineering
• Control and Local Measurement of the Spin Chemical Potential in a Magnetic Insulator
• Quantum harmonic oscillator state synthesis by reservoir engineering
• Discrete entanglement distribution with squeezed light
• Steady Bell state generation via magnon-photon coupling
• Nanometre-scale probing of spin waves using single electron spins
• Mixed-state evolution in the presence of gain and loss
• Entanglement swapping with photons generated on-demand by a quantum dot
• Hybrid nanodiamond-YIG systems for efficient quantum information processing and nanoscale sensing
• Autonomous Quantum Error Correction and Application to Quantum Sensing with Trapped Ions
• Repeated multi-qubit readout and feedback with a mixed-species trapped-ion register
• Stabilizing entanglement via symmetry-selective bath engineering in superconducting qubits
• Preserving entanglement and nonlocality in solid-state qubits by dynamical decoupling
• Opportunities for long-range magnon-mediated entanglement of spin qubits via on- and off-resonant coupling
• Antiferromagnetic magnons as highly squeezed Fock states underlying quantum correlations
• Long-Range Interaction of Spin-Qubits via Ferromagnets
• Nanomagnonic cavities for strong spin-magnon coupling
• Long-distance spin-spin coupling via floating gates
• Off-Resonant Manipulation of Spins in Diamond via Precessing Magnetization of a Proximal Ferromagnet
• Quantum Correlations in Mixed-State Metrology
• Lecture Notes on the Theory of Open Quantum Systems
• A Very Small Logical Qubit
• Quantum-impurity relaxometry of magnetization dynamics
• Magnon-squeezing as a niche of quantum magnonics
• Entanglement between charge qubits induced by a common dissipative environment
• Dissipative preparation of entangled states between two spatially separated nitrogen-vacancy centers
• Parity-time symmetry breaking in magnetic systems
• Tuning entanglement by squeezing magnons in anisotropic magnets
• Engineered dissipation induced entanglement transition in quantum spin chains: from logarithmic growth to area law
• Quantum Sensing of Spin Transport Properties of an Antiferromagnetic Insulator
• Predicted strong coupling of solid-state spins via a single magnon mode
• Exceptional points in dissipatively coupled spin dynamics
• Dissipation-induced continuous quantum error correction for superconducting circuits
• Dissipation induced macroscopic entanglement in an open optical lattice
• Dynamical decoupling sequences for multi-qubit dephasing suppression and long-time quantum memory
• Entanglement control via reservoir engineering in ultracold atomic gases
• Heralded Bell State of Dissipative Qubits Using Classical Light in a Waveguide
• Entangling Distant Spin qubits via a Magnetic Domain Wall
• All optical control of a single electron spin in diamond
• Conditional Teleportation of Quantum-Dot Spin States
• Parity-time symmetry breaking in spin chains
• Robust entanglement generation by reservoir engineering
• Spatially resolved detection of complex ferromagnetic dynamics using optically detected NV spins
• Distinguishing between quantum and classical Markovian dephasing dissipation
• Perspective: (Beyond) spin transport in insulators
• Magnetic Resonance in Defect Spins mediated by Spin Waves
• Long-range entangled zero-mode state in a non-Hermitian lattice
• Dissipative Long-Range Entanglement Generation between Electronic Spins
• Engineering autonomous error correction in stabilizer codes at finite temperature
• Noisy frequency estimation with noisy probes
• Flavors of Magnetic Noise in Quantum Materials
• Entangling Nuclear Spins by Dissipation in a Solid-state System
• Weak-Light Nonlinearity Using a Dark State in Coupled Quantum Dots

Cited by in corpus (31)

• Quantum magnonics: when magnon spintronics meets quantum information science
• Nonreciprocal Photon-Phonon Entanglement in Kerr-Modified Spinning Cavity Magnomechanics
• Generation of long-lived $W$ states via reservoir engineering in dissipatively coupled systems
• Dissipative Spin-wave Diode and Nonreciprocal Magnonic Amplifier
• Quantum computing on magnetic racetracks with flying domain wall qubits
• Generating Bell states and $N$-partite $W$ states of long-distance qubits in superconducting waveguide QED
• High-fidelity spin qubit shuttling via large spin-orbit interaction
• User-friendly TWA for dissipative spin dynamics
• Single-mode magnon-polariton lasing and amplification controlled by dissipative coupling
• Solid-state platform for cooperative quantum dynamics driven by correlated emission
• Magnonic $\phi$ Josephson junctions and synchronized precession
• Non-Hermitian Casimir effect of magnons
• Acoustic Frequency Multiplication and Pure Second Harmonic Generation of Phonons by Magnetic Transducers
• Waveguide QED with dissipative light-matter couplings
• Intertwining of lasing and superradiance under spintronic pumping
• Electron-mediated entanglement of two distant macroscopic ferromagnets within a nonequilibrium spintronic device
• Entangling distant systems via universal nonadiabatic passage
• Topological Spin Textures Enabling Quantum Transmission
• Entangling color centers via magnon-antimagnon pair creation
• Dynamics of spin-momentum entanglement from superradiant phase transitions
• Controllable non-Hermitian qubit-qubit Coupling in Superconducting quantum Circuit
• Persistent nonlocality in an ultracold-atom environment
• Efficient and controlled symmetric and asymmetric Bell-state transfers in a dissipative Jaynes-Cummings model
• Tunable Ultrafast Dynamics of Antiferromagnetic Vortices in Nanoscale Dots
• Genuine $k$-partite correlations and entanglement in the ground state of the Dicke model for interacting qubits
• Breaking conservation law enables steady-state entanglement out of equilibrium
• Quantum simulation of spin-1/2 XYZ model using solid-state spin centers
• Steady-state entanglement of spin qubits mediated by nonreciprocal and chiral magnons
• Non-Hermiticity induced thermal entanglement phase transition
• Robust Tripartite Entanglement Generation via Correlated Noise in Spin Qubits
• Enhancement of quantum sensing in a dissipatively coupled two-mode system