Tunable phonon induced steady state coherence in a double quantum dot

Abstract

Charge qubits can be created and manipulated in solid-state double-quantum-dot (DQD) platforms. Typically, these systems are strongly affected by quantum noise stemming from coupling to substrate phonons. This is usually assumed to lead to decoherence towards steady states that are diagonal in the energy eigenbasis. In this article we show, to the contrary, that due to the presence of phonons the equilibrium steady state of the DQD charge qubit spontaneously exhibits coherence in the energy eigenbasis with high purity. The magnitude and phase of the coherence can be controlled by tuning the Hamiltonian parameters of the qubit. The coherence is also robust to presence of fermionic leads. In addition, we show that this steady-state coherence can be used to drive an auxiliary cavity mode coupled to the DQD.

References in corpus (45)

• Quantum Computation with Quantum Dots
• Introduction to Quantum Noise, Measurement and Amplification
• Dynamical Decoupling of Open Quantum Systems
• Quantum Coherence as a Resource
• Operational Resource Theory of Coherence
• Description of quantum coherence in thermodynamic processes requires constraints beyond free energy
• Concepts and methods in the theory of open quantum systems
• Maximal work extraction from quantum systems
• 1/f noise: implications for solid-state quantum information
• Coherent and Collective Quantum Optical Effects in Mesoscopic Systems
• Experimental demonstration of quantum effects in the operation of microscopic heat engines
• Environment Induced Entanglement in Markovian Dissipative Dynamics
• The extraction of work from quantum coherence
• Low-temperature thermodynamics with quantum coherence
• Quantum-enhanced absorption refrigerators
• Quantum absorption refrigerator with trapped ions
• Coherence and measurement in quantum thermodynamics
• The role of quantum coherence in non-equilibrium entropy production
• Coherence-assisted single-shot cooling by quantum absorption refrigerators
• The role of coherence in the non-equilibrium thermodynamics of quantum systems
• Semiconductor double quantum dot micromaser
• Dynamics of the spin-boson model with a structured environment
• Coherence-enhanced constancy of a quantum thermoelectric generator
• Small quantum absorption refrigerator in the transient regime: time scales, enhanced cooling and entanglement
• Steady-state coherences by composite system-bath interactions
• The equilibrium states of open quantum systems in the strong coupling regime
• Nonequilibrium density matrix description of steady state quantum transport
• Generalized Gibbs state with modified Redfield solution: Exact agreement up to second order
• The Accuracy of Perturbative Master Equations
• Kondo signature in heat transfer via a local two-state system
• Scaling and universality in the anisotropic Kondo model and the dissipative two-state system
• Deterministic Coherence Distillation
• Reduced density matrix for nonequilibrium steady states: A modified Redfield solution approach
• Distance dependence of entanglement generation via a bosonic heat bath
• Driven dissipative dynamics and topology of quantum impurity systems
• Probing confined phonon modes by transport through a nanowire double quantum dot
• Long-lived spin entanglement induced by a spatially correlated thermal bath
• Autonomous thermal machine for amplification and control of energetic coherence
• Microwave detection of electron-phonon interactions in a cavity-coupled double quantum dot
• Entanglement and Quantum Noise Due to a Thermal Bosonic Field
• Stimulated Phonon Emission in a Driven Double Quantum Dot
• Probing electron-phonon interactions in the charge-photon dynamics of cavity-coupled double quantum dots
• Finite coupling effects in double quantum dots near equilibrium
• Giant photon gain in large-scale quantum dot circuit-QED systems
• On-Chip Quantum Dot Light Source for Quantum State Readout

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• Quantum Coherence and Ergotropy
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• Fundamental limitations in Lindblad descriptions of systems weakly coupled to baths
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• Quantum Brownian Motion for Magnets
• Non-Markovian Quantum Mpemba effect
• Canonically consistent quantum master equation
• Thermal entanglement and correlated coherence in two coupled double quantum dots systems
• Capturing non-Markovian dynamics with the reaction coordinate method
• Hamiltonian of mean force in the weak-coupling and high-temperature approximations and refined quantum master equations
• Enhanced steady-state coherence via repeated system-bath interactions
• Emergent $\mathcal{P}\mathcal{T}$ symmetry in a double-quantum-dot circuit QED set-up
• Searching for Lindbladians obeying local conservation laws and showing thermalization
• Cyclic quantum engines enhanced by strong bath coupling
• Lyapunov equation in open quantum systems and non-Hermitian physics
• Thermal entanglement and quantum coherence of a single electron in a double quantum dot with Rashba Interaction
• Quantum collisional thermostats
• Quantum coherence-control of thermal energy transport: The V model as a case study
• Quantum Thermal Transport Beyond Second Order with the Reaction Coordinate Mapping
• Steady state in strong system-bath coupling: mean force Gibbs state versus reaction coordinate
• Effective-Hamiltonian theory: An approximation to the equilibrium state of open quantum systems
• Steady state in ultrastrong coupling regime: perturbative expansion and first orders
• Coherence-enhanced thermodynamic performance in a periodically-driven inelastic heat engine
• Non-Markovian skin effect
• Corrections to the Hamiltonian induced by finite-strength coupling to the environment
• Coupling function from bath density of states
• Extraction of autonomous quantum coherences
• Page-curve-like entanglement dynamics in open quantum systems
• Pairwise Measurement Induced Synthesis of Quantum Coherence
• Dynamics of the Non-equilibrium spin Boson Model: A Benchmark of master equations and their validity
• Enhanced entanglement in multi-bath spin-boson models
• Sixth-order time-convolutionless master equation and beyond: Late-time resummations, two types of divergences, and the limits of validity
• Thermally-induced qubit coherence in quantum electromechanics
• Real-time observation of charge-spin cooperative dynamics driven by a nonequilibrium phonon environment
• Equivalence between the second order steady state for the spin-Boson model and its quantum mean force Gibbs state
• Nonclassical radiation from a nonlinear oscillator driven solely by classical $1/f$ noise
• Lindblad evolution as gradient flow
• Synthesizing and multiplexing autonomous quantum coherences
• On the difference between thermalization in open and isolated quantum systems: a case study
• Making Non-Markovian master equations accessible with approximate environments
• Stabilization of product states and excited-state quantum phase transitions in a coupled qubit-field system