Manipulative Properties of the Asymmetry Double Quantum Dots via Laser and Gate Voltage

• URL: http://arxiv.org/abs/2403.12103v1
• Date: Sun, 17 Mar 2024 12:40:48 GMT
• Title: Manipulative Properties of the Asymmetry Double Quantum Dots via Laser and Gate Voltage
• Authors: Shun-Cai Zhao, Zheng-Dong Liu,
• Abstract summary: We present the density matrix approach for theoretical description of an asymmetric double quantum dot(QD)system. The results show that the properties of gain,absorption and dispersion of the double QD system can be manipulated by the laser pulse or gate voltage.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: We present the density matrix approach for theoretical description of an asymmetric double quantum dot(QD)system.The results show that the properties of gain,absorption and dispersion of the double QD system ,the population of the state with one hole in one dot and an electron in other dot transferred by tunneling can be manipulated by the laser pulse or gate voltage.Our scheme may propose a probability of electro-optical manipulation of quantum system.

Related papers

• Oscillatory dissipative tunneling in an asymmetric double-well potential [32.65699367892846]
  Chemical research will benefit from a fully controllable, asymmetric double-well equipped with precise measurement capabilities of the tunneling rates. Our work paves the way for analog molecule simulators based on quantum superconducting circuits.
  arXiv  Detail & Related papers  (2024-09-19T22:43:07Z)
• Entanglement of photonic modes from a continuously driven two-level system [34.50067763557076]
  We experimentally generate entangled photonic modes by continuously exciting a quantum emitter, a superconducting qubit, with a coherent drive. We show that entanglement is generated between modes extracted from the two sidebands of the resonance fluorescence spectrum. Our approach can be utilized to distribute entanglement at a high rate in various physical platforms.
  arXiv  Detail & Related papers  (2024-07-10T18:48:41Z)
• Coherent Control of an Optical Quantum Dot Using Phonons and Photons [5.1635749330879905]
  We describe unique features and advantages of optical two-level systems, or qubits, for optomechanics. The qubit state can be coherently controlled using both phonons and resonant or detuned photons. Time-correlated single-photon counting measurements reveal the control of QD population dynamics.
  arXiv  Detail & Related papers  (2024-04-02T16:25:35Z)
• Quantum state tomography of photon's polarization and path degrees of freedom [0.0]
  We propose a method to reconstruct the density matrix of two qubits encoded in the polarization and path degrees of freedom of a single photon. Our findings put forward photonic circuits for the investigation of the dynamics of open quantum systems.
  arXiv  Detail & Related papers  (2023-08-24T14:17:57Z)
• A vertical gate-defined double quantum dot in a strained germanium double quantum well [48.7576911714538]
  Gate-defined quantum dots in silicon-germanium heterostructures have become a compelling platform for quantum computation and simulation. We demonstrate the operation of a gate-defined vertical double quantum dot in a strained germanium double quantum well. We discuss challenges and opportunities and outline potential applications in quantum computing and quantum simulation.
  arXiv  Detail & Related papers  (2023-05-23T13:42:36Z)
• Effect of induced transition on the quantum entanglement and coherence in two-coupled double quantum dots system [0.0]
  Double quantum dots (DQDs) appear as a versatile platform for technological breakthroughs in quantum computation and nanotechnology. This work inspects the thermal entanglement and quantum coherence in two-coupled DODs, where the system is exposed to an external stimulus that induces an electronic transition within each subsystem.
  arXiv  Detail & Related papers  (2022-11-08T22:07:26Z)
• Theory of multi-dimensional quantum capacitance and its application to spin and charge discrimination in quantum-dot arrays [0.0]
  Quantum states of a few-particle system capacitively coupled to a metal gate can be discriminated by measuring the quantum capacitance. This approach is here generalized to the multi-voltage case, through the introduction of the quantum capacitance matrix.
  arXiv  Detail & Related papers  (2022-10-19T13:38:55Z)
• Interaction of quantum systems with single pulses of quantized radiation [68.8204255655161]
  We describe the interaction of a propagating pulse of quantum radiation with a localized quantum system. By transformation to an appropriate picture, we identify the usual Jaynes-Cummings Hamiltonian between the scatterer and a superposition of the initial and final mode. The transformed master equation offers important insights into the system dynamics and it permits numerically efficient solutions.
  arXiv  Detail & Related papers  (2022-03-14T20:23:23Z)
• 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)
• Programmable two-qubit gates in capacitively coupled flopping-mode spin qubits [0.0]
  We show a versatile set of quantum gates between adjacent spin qubits defined in semiconductor quantum dots. We calculate the estimated infidelity of different two-qubit gates in the most immediate possible experimental realizations.
  arXiv  Detail & Related papers  (2020-03-04T15:37:21Z)
• Entanglement generation via power-of-SWAP operations between dynamic electron-spin qubits [62.997667081978825]
  Surface acoustic waves (SAWs) can create moving quantum dots in piezoelectric materials. We show how electron-spin qubits located on dynamic quantum dots can be entangled.
  arXiv  Detail & Related papers  (2020-01-15T19:00:01Z)

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.