Non-equilibrium Entanglement and Noise in Coupled Qubits

Abstract

We study charge entanglement in two Coulomb-coupled double quantum dots in thermal equilibrium and under stationary non-equilibrium transport conditions. In the transport regime, the entanglement exhibits a clear switching threshold and various limits due to suppression of tunneling by Quantum Zeno localisation or by an interaction induced energy gap. We also calculate quantum noise spectra and discuss the inter-dot current correlation as an indicator of the entanglement in transport experiments.

4 pages, 4 figures

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Cited by in corpus (49)

• Nonequilibrium Physics in Biology
• Counting Statistics of Non-Markovian Quantum Stochastic Processes
• Non-Markovianity assisted Steady State Entanglement
• Entanglement of mechanical oscillators coupled to a non-equilibrium environment
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• Steady state entanglement beyond thermal limits
• Finite-frequency counting statistics of electron transport: Markovian Theory
• Steady-state entanglement and coherence of the coupled qubit system in equilibrium and nonequilibrium environments
• Non-Markovian effects in the Quantum noise of interacting nanostructures
• Generation and propagation of entanglement in driven coupled-qubit systems
• Non-local transport properties of nanoscale conductor-microwave cavity systems
• Photon counting statistics of a microwave cavity
• Photon-mediated electron transport in hybrid circuit-QED
• Memory effect induced macroscopic-microscopic entanglement
• Current noise cross correlation mediated by Majorana bound states
• Detecting quantum-coherent nanomechanical oscillations using the current-noise spectrum of a double quantum dot
• Effect of confinement potential geometry on entanglement in quantum dot-based nanostructures
• Electron Bunching in Stacks of Coupled Quantum Dots
• Noise Spectra of ac-driven quantum dots
• Transient Current-Current Correlations and Noise Spectra
• Non-equilibrium correlations and entanglement in a semiconductor hybrid circuit-QED system
• Quantum versus classical counting in nonMarkovian master equations
• Steady state entanglement of two coupled qubits
• Stochastic resonance phenomena in spin chains
• Noise and full counting statistics of a Cooper pair splitter
• Generating entangled quantum microwaves in a Josephson-photonics device
• Detecting non-Markovian plasmonic band gaps in quantum dots using electron transport
• Frequency-dependent current noise in quantum heat transfer with full counting statistics
• Shot noise spectrum of artificial Single Molecule Magnets: measuring spin-relaxation times via the Dicke effect
• Measuring the Entanglement between Double Quantum Dot Charge Qubits
• Enhanced violation of a Leggett-Garg inequality under nonequilibrium thermal conditions
• Quantum dynamics in nonequilibrium environments
• Can we always get the entanglement entropy from the Kadanoff-Baym equations? The case of the T-matrix approximation
• Vibrational Coherences in Nano-Elastic Tunneling
• Influence of equilibrium and nonequilibrium environments on macroscopic realism through the Leggett-Garg inequalities
• Continuous matrix product state tomography of quantum transport experiments
• Decay of entanglement in coupled, driven systems with bipartite decoherence
• Superpoissonian shot noise in organic magnetic tunnel junctions
• Coherent Backaction of Quantum Dot Detectors: Qubit Isospin Precession
• Finite frequency backscattering current noise at a helical edge
• Photon emission statistics of a driven microwave cavity
• Electrostatic control of quantum dot entanglement induced by coupling to external reservoirs
• Entanglement versus Bell nonlocality of quantum nonequilibrium steady states
• Anomalous decoherence effects in driven coupled quantum spin systems
• Finite-frequency noise, Fano factor, $\Delta T$-noise and cross-correlations in double quantum dots
• Master equation approach to transient quantum transport in nanostructures
• Asymmetric steerability of quantum equilibrium and nonequilibrium steady states through entanglement detection
• Quantum Energy Teleportation under Equilibrium and Nonequilibrium Environments
• Quantum Teleportation in Non-equilibrium Environments and Fixed-point Fidelity