Inducing spin-correlations and entanglement in a double quantum dot through non-equilibrium transport

Abstract

For a double quantum dot system in a parallel geometry, we demonstrate that by combining the effects of a flux and driving an electrical current through the structure, the spin correlations between electrons localized in the dots can be controlled at will. In particular, a current can induce spin correlations even if the spins are uncorrelated in the initial equilibrium state. Therefore, we are able to engineer an entangled state in this double-dot structure. We take many-body correlations fully into account by simulating the real-time dynamics using the time-dependent density matrix renormalization group method. Using a canonical transformation, we provide an intuitive explanation for our results, related to Ruderman-Kittel-Kasuya-Yoshida physics driven by the bias.

References in corpus (28)

• The density-matrix renormalization group in the age of matrix product states
• Real time evolution using the density matrix renormalization group
• Real-time simulations of nonequilibrium transport in the single-impurity Anderson model
• Twofold advance in the theoretical understanding of far-from-equilibrium properties of interacting nanostructures
• Universal Scaling in Non-equilibrium Transport Through a Single-Channel Kondo Dot
• Multi-impurity Anderson model for quantum dots coupled in parallel
• Charge transport through single molecules, quantum dots, and quantum wires
• Non-equilibrium electronic transport in a one-dimensional Mott insulator
• Transport properties and Kondo correlations in nanostructures: the time-dependent DMRG method applied to quantum dots coupled to Wilson chains
• Magnetic field dependent transmission phase of a double dot system in a quantum ring
• Unified description of correlations in double quantum dots
• Pseudospin-Resolved Transport Spectroscopy of the Kondo Effect in a Double Quantum Dot
• Quantum phase transitions in the systems of parallel quantum dots
• Controlling Spin Qubits in Quantum Dots
• Time-dependent DMRG Study on Quantum Dot under a Finite Bias Voltage
• Electron Fabry-Perot interferometer with two entangled magnetic impurities
• Tunable pseudogap Kondo effect and quantum phase transitions in Aharonov-Bohm interferometers
• Transport through quantum dots: A combined DMRG and cluster-embedding study
• Spin-charge separation and simultaneous spin and charge Kondo effect
• Dark Bell states in tunnel-coupled spin qubits
• Nonequilibrium conductance through a benzene molecule in the Kondo regime
• Creation and dynamics of remote spin-entangled pairs in the expansion of strongly correlated fermions in an optical lattice
• Generation of Spin Entanglement in Nonequilibrium Quantum Dots
• Steady-state and quench dependent relaxation of a quantum dot coupled to one-dimensional leads
• Generation and detection of a spin entanglement in nonequilibrium quantum dots
• Designing a symmetry protected molecular device
• Transport through two interacting resonant levels connected by a Fermi sea
• The two-impurity Kondo model with spin-orbit interactions

Cited by in corpus (8)

• Charge dynamics in molecular junctions: Nonequilibrium Green's Function approach made fast
• A Fabry-Perot interferometer with quantum mirrors: nonlinear light transport and rectification
• Mechanism of Ultrafast Relaxation of a Photo-Carrier in Antiferromagnetic Spin Background
• Quenched dynamics of entangled states in correlated quantum dots
• Time-dependent quantum transport through an interacting quantum dot beyond sequential tunneling: second-order quantum rate equations
• Decoherence of an entangled state of a strongly-correlated double quantum dot structure through tunneling processes
• Nonmonotonic buildup of spin-singlet correlations in a double quantum dot
• Charge density wave breakdown in a heterostructure with electron-phonon coupling