Unidirectional Quantum Transport in Optically Driven $V$-type Quantum Dot Chains

• URL: http://arxiv.org/abs/2009.12083v2
• Date: Mon, 28 Sep 2020 06:26:22 GMT
• Title: Unidirectional Quantum Transport in Optically Driven $V$-type Quantum Dot Chains
• Authors: Oliver Kaestle, Emil Vosmar Denning, Jesper M{\o}rk, Andreas Knorr, Alexander Carmele
• Abstract summary: We predict a mechanism for achieving complete population inversion in a continuously driven InAs/GaAs semiconductor quantum dot. This highly nonequilibrium steady state is enabled by the interplay between $V$-type interband transitions and a non-Markovian decoherence mechanism.
• Score: 58.720142291102135
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We predict a mechanism for achieving complete population inversion in a continuously driven InAs/GaAs semiconductor quantum dot featuring $V$-type transitions. This highly nonequilibrium steady state is enabled by the interplay between $V$-type interband transitions and a non-Markovian decoherence mechanism, introduced by acoustic phonons. The population trapping mechanism is generalized to a chain of coupled emitters. Exploiting the population inversion, we predict unidirectional excitation transport from one end of the chain to the other without external bias, independent of the unitary interdot coupling mechanism.

Related papers

• Out-of-equilibrium scaling behavior arising during round-trip protocols across a quantum first-order transition [0.0]
  We investigate the nonequilibrium dynamics of quantum spin chains during a round-trip protocol that slowly drives the system across a quantum first-order transition. We show that such scaling relations persist when the driving protocol is inverted and the transition is approached again by a far-from-equilibrium state.
  arXiv  Detail & Related papers  (2023-05-22T12:55:15Z)
• Quadrupole transitions and quantum gates protected by continuous dynamic decoupling [0.0]
  We provide a compact representation of nested continuous dynamical decoupling in trapped ions. We discuss the possibility of combining continuous dynamical decoupling and Molmer-Sorensen gates.
  arXiv  Detail & Related papers  (2023-01-19T10:10:20Z)
• Directional Josephson traveling-wave parametric amplifier via non-Hermitian topology [58.720142291102135]
  Low-noise microwave amplification is crucial for detecting weak signals in quantum technologies and radio astronomy. Current amplifiers do not satisfy all these requirements, severely limiting the scalability of superconducting quantum devices. Here, we demonstrate the feasibility of building a near-ideal quantum amplifier using a homogeneous Josephson junction array and the non-trivial topology of its dynamics.
  arXiv  Detail & Related papers  (2022-07-27T18:07:20Z)
• Quadrature nonreciprocity: unidirectional bosonic transmission without breaking time-reversal symmetry [0.0]
  We extend the notion of nonreciprocity to unidirectional bosonic transport in systems with a time-reversal symmetric Hamiltonian. In contrast to standard nonreciprocity, this unidirectional transport manifests when the mode quadratures are resolved with respect to an external reference phase. Our work opens up new avenues for signal routing and quantum-limited amplification in bosonic systems.
  arXiv  Detail & Related papers  (2022-07-18T11:37:54Z)
• Nonreciprocal Amplification Transition in a Driven-Dissipative Quantum Network [3.32634590232003]
  We study the transport properties of a driven-dissipative quantum network. Multiple bosonic cavities are coupled through a nonreciprocal bus with unidirectional transmission.
  arXiv  Detail & Related papers  (2022-07-14T13:07:27Z)
• Waveguide quantum optomechanics: parity-time phase transitions in ultrastrong coupling regime [125.99533416395765]
  We show that the simplest set-up of two qubits, harmonically trapped over an optical waveguide, enables the ultrastrong coupling regime of the quantum optomechanical interaction. The combination of the inherent open nature of the system and the strong optomechanical coupling leads to emerging parity-time (PT) symmetry. The $mathcalPT$ phase transition drives long-living subradiant states, observable in the state-of-the-art waveguide QED setups.
  arXiv  Detail & Related papers  (2020-07-04T11:02:20Z)
• Non-equilibrium non-Markovian steady-states in open quantum many-body systems: Persistent oscillations in Heisenberg quantum spin chains [68.8204255655161]
  We investigate the effect of a non-Markovian, structured reservoir on an open Heisenberg spin chain. We establish a coherent self-feedback mechanism as the reservoir couples frequency-dependent to the spin chain.
  arXiv  Detail & Related papers  (2020-06-05T09:16:28Z)
• Long-range interaction in an open boundary-driven Heisenberg spin lattice: A far-from-equilibrium transition to ballistic transport [62.997667081978825]
  We study an open Heisenberg XXZ spin chain with long-range Ising-type interaction. We find that the chain lengths for this transition are increasing with decreasing range of the Ising-type interactions between distant spins. The transition can be explained by the suppression of ferromagnetic domains at the edges of the chain.
  arXiv  Detail & Related papers  (2020-04-27T12:22:50Z)
• Quantum Statistical Complexity Measure as a Signalling of Correlation Transitions [55.41644538483948]
  We introduce a quantum version for the statistical complexity measure, in the context of quantum information theory, and use it as a signalling function of quantum order-disorder transitions. We apply our measure to two exactly solvable Hamiltonian models, namely: the $1D$-Quantum Ising Model and the Heisenberg XXZ spin-$1/2$ chain. We also compute this measure for one-qubit and two-qubit reduced states for the considered models, and analyse its behaviour across its quantum phase transitions for finite system sizes as well as in the thermodynamic limit by using Bethe ansatz.
  arXiv  Detail & Related papers  (2020-02-05T00:45:21Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.