Generation of entanglement between quantum dot molecule with the presence of phonon effects in a voltage-controlled junction
arXiv:2106.05614 · doi:10.1016/j.physleta.2021.127525
Abstract
We investigate the generation of entanglement through a quantum dot molecule under the influence of vibrational phonon modes in a bias voltage junction. The molecular quantum dot system is realized by coupled quantum dots inside a suspended carbon nanotube. We consider the dynamical entanglement as a function of bias voltage and temperature by taking into account the electron-phonon interaction. In order to generate the robust entanglement between quantum dots and preserve it to reach the maximal achievable amount steadily, we introduce an asymmetric coupling protocol and apply the easy tunable bias voltage-driven field. For an oscillating bias voltage, the time-varying entanglement can periodically reach the maximum revival. In thermal entanglement dynamics, the phenomena of thermal entanglement degradation and thermal entanglement revival are observed which are intensively affected by the strength of phonon decoherence. The revival of entanglement shows a larger value for a higher phonon coupling.
References in corpus (35)
- Entanglement of Formation of an Arbitrary State of Two Qubits
- Quantum Computation with Quantum Dots
- Entanglement of a Pair of Quantum Bits
- Spins in few-electron quantum dots
- Sudden Death of Entanglement
- Natural and artificial atoms for quantum computation
- Ballistic spreading of entanglement in a diffusive nonintegrable system
- Many-body localization in periodically driven systems
- Creation of Entanglement by Interaction with a Common Heat Bath
- Quantum Correlations in Systems of Indistinguishable Particles
- Quantum Correlations in Two-Fermion Systems
- Electron-phonon effects and transport in carbon nanotubes
- Double-Occupancy Errors, Adiabaticity, and Entanglement of Spin-Qubits in Quantum Dots
- Multi-wall carbon nanotubes as quantum dots
- Arbitrarily Accurate Dynamical Control in Open Quantum Systems
- Real-Space Tailoring of the Electron-Phonon Coupling in Ultra-Clean Nanotube Mechanical Resonators
- Electron Entanglement via a Quantum Dot
- Molecular states in carbon nanotube double quantum dots
- Pumping of vibrational excitations in a Coulomb blockaded suspended carbon nanotube
- Photon statistics from a resonantly driven quantum dot
- Driving-dependent damping of Rabi oscillations in two-level semiconductor systems
- Phonon-induced optical dephasing in single organic molecules
- Observing information backflow from controllable non-Markovian multi-channels in diamond
- Multipartite concurrence for identical-fermion systems
- Measuring von Neumann entanglement entropies without wave functions
- Transport properties of double quantum dots with electron-phonon coupling
- Resonant Exchange Operation in Triple-Quantum-Dot Qubits for Spin-Photon Transduction
- Thermal rectification in a double quantum dots system with polaron effect
- Uniaxial dynamical decoupling for an open quantum system
- Time-dependent quantum transport through an interacting quantum dot beyond sequential tunneling: second-order quantum rate equations
- Optical Detection and Storage of Entanglement in Plasmonically Coupled Quantum Dot Qubits
- Geometrical self-testing of partially entangled two-qubit states
- Entanglement dynamics of photon pairs emitted from quantum dot
- Many body effects in finite metallic carbon nanotubes
- Dynamical Generation of Synthetic Electric Fields for Photons in the Quantum Regime