Photon statistics of time dependent electronic excitation of spin injected quantum dots

• URL: http://arxiv.org/abs/2501.16747v2
• Date: Wed, 29 Jan 2025 02:53:20 GMT
• Title: Photon statistics of time dependent electronic excitation of spin injected quantum dots
• Authors: Chiran Wijesundara, Jeffrey Carvalho, Yuan Lu, Tim Thomay,
• Abstract summary: Investigation of the time dynamics of spin-injected, electrically contacted quantum dots. Shape of electrical excitation pulse has a direct impact on photon statistics. Potential applications in creating deterministic higher-order photon Fock states.
• Score: 1.4123360914867524
• License:
• Abstract: The time dynamics of spin-injected, electrically contacted quantum dots were investigated with a focus on the time evolution of photon statistics. Photon statistics can provide insights into whether the device functions as an effective single-photon emitter or exhibits higher-order emissions. Through these investigations, we found that the shape of the electrical excitation pulse has a direct impact on photon statistics. Specifically, the rising edge of the pulse corresponds to a significantly higher number of higher-order photon states, which decay much faster than single photons associated with the falling edge of the electrical pulse. This relationship implies that the pulse shape can be tailored to optimize the device as either a better single-photon source or a generator of higher-order photon states, with potential applications in creating deterministic higher-order photon Fock states. The ability to easily modify the pulse shape is a unique feature of electrically excited quantum dots.

Related papers

• Maximal quantum interaction between free electrons and photons [18.53651187347193]
  Free-electron quantum optics enables electron-photon entanglement and holds the potential for generating nontrivial photon states. We derive an upper limit to the quantum vacuum interaction strength between free electrons and single-mode photons, which illuminates the conditions for the strongest interaction. We validate the limit by analytical and numerical calculations on canonical geometries and provide near-optimal designs indicating the feasibility of strong quantum interactions.
  arXiv  Detail & Related papers  (2024-03-30T14:11:00Z)
• How single-photon nonlinearity is quenched with multiple quantum emitters: Quantum Zeno effect in collective interactions with $\Lambda$-level atoms [49.1574468325115]
  We show that the single-photon nonlinearity vanishes with the number of emitters. The mechanism behind this behavior is the quantum Zeno effect, manifested in the slowdown of the photon-controlled dynamics.
  arXiv  Detail & Related papers  (2024-01-13T06:55:18Z)
• All-optical modulation with single-photons using electron avalanche [69.65384453064829]
  We demonstrate all-optical modulation using a beam with single-photon intensity. Our approach opens up the possibility of terahertz-speed optical switching at the single-photon level.
  arXiv  Detail & Related papers  (2023-12-18T20:14:15Z)
• Deterministic photon source of genuine three-qubit entanglement [4.416507176974232]
  A single quantum emitter embedded in a photonic resonator or waveguide may be triggered to emit one photon at a time into a desired optical mode. By coherently controlling a single spin in the emitter, multi-photon entanglement can be realized.
  arXiv  Detail & Related papers  (2023-10-18T15:22:36Z)
• Multi-photon electron emission with non-classical light [52.77024349608834]
  We present measurements of electron number-distributions from metal needle tips illuminated with ultrashort light pulses of different photon quantum statistics. Changing the number of modes of the exciting bright squeezed vacuum light, we can tailor the electron-number distribution on demand.
  arXiv  Detail & Related papers  (2023-07-26T12:35:03Z)
• Energy-efficient quantum non-demolition measurement with a spin-photon interface [0.0]
  We study the potential of a SPI for quantum non demolition (QND) measurements of a spin state. We show that quantum superpositions of zero and single photon states outperform coherent pulses of light. The proposed schemes are robust against imperfections in state of the art semi-conducting devices.
  arXiv  Detail & Related papers  (2022-05-19T15:38:18Z)
• Rapidly enhanced spin polarization injection in an optically pumped spin ratchet [49.1301457567913]
  We report on a strategy to boost the spin injection rate by exploiting electrons that can be rapidly polarized. We demonstrate this in a model system of Nitrogen Vacancy center electrons injecting polarization into a bath of 13C nuclei in diamond. Through a spin-ratchet polarization transfer mechanism, we show boosts in spin injection rates by over two orders of magnitude.
  arXiv  Detail & Related papers  (2021-12-14T08:23:10Z)
• Stimulated generation of indistinguishable single photons from a quantum ladder system [0.0]
  We propose a scheme for the generation of highly indistinguishable single photons using semiconductor quantum dots. The scheme is based on the resonant two-photon excitation of the biexciton followed by stimulation of the biexciton to selectively prepare an exciton.
  arXiv  Detail & Related papers  (2021-07-07T14:04:35Z)
• Transient dynamics of the quantum light retrieved from Rydberg polaritons [0.0]
  We show that the value of the second-order autocorrelation function of the transmitted light strongly depends on the position within the pulse. We derive a theoretical model that quantitatively predicts our results and explains the physical behavior involved. We show that by selecting only the last part of the transmitted pulse, the single photons show an antibunching parameter as low as 0.12 and a generation efficiency per trial larger than possible.
  arXiv  Detail & Related papers  (2020-11-25T08:51:24Z)
• Strongly entangled system-reservoir dynamics with multiphoton pulses beyond the two-excitation limit: Exciting the atom-photon bound state [62.997667081978825]
  We study the non-Markovian feedback dynamics of a two-level system interacting with the electromagnetic field inside a semi-infinite waveguide. We compare the trapped excitation for an initially excited quantum emitter and an emitter prepared via quantized pulses containing up to four photons.
  arXiv  Detail & Related papers  (2020-11-07T12:56:16Z)
• Position Sensitive Response of a Single-Pixel Large-Area SNSPD [58.720142291102135]
  Superconducting nanowire single photon detectors (SNSPDs) are typically used as single-mode-fiber-coupled single-pixel detectors. Large area detectors are increasingly critical for applications ranging from microscopy to free-space quantum communications. We explore changes in the rising edge of the readout pulse for large-area SNSPDs as a function of the bias current, optical spot size on the detector, and number of photons per pulse.
  arXiv  Detail & Related papers  (2020-05-29T23:33:11Z)

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.