Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton

Praschan, Tom; Heinze, Dirk; Breddermann, Dominik; Zrenner, A.; Walther, Andrea; Schumacher, Stefan

doi:10.1103/physrevb.105.045302

Cited by 4 publications

(4 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, an excitation method with maximum biexciton preparation fidelity is preferred, but not required for this emission scheme to yield high‐quality photons. However, the specifics of the excitation process depend strongly on the cavity, where utilizing advanced excitation methods like pulse shaping [ 44 ] or the SUPER scheme [ 43,45 ] may prove beneficial. While our results are tailored toward the telecom wavelength at 1550 nm, other wavelengths can be achieved with little further adjustment due to the broad cavity mode.…”

Section: Discussionmentioning

confidence: 99%

“…with the biexciton-cavity Hamiltonian [22,44] in the interaction frame and in the rotating frame picture…”

Section: Appendix A: Theorymentioning

confidence: 99%

“…We incorporate electron-phonon coupling using the polaron approach described in ref. [22,37,38,44]. Markovian losses are considered using the Lindblad-operator…”

Section: Appendix A: Theorymentioning

confidence: 99%

“…The optical excitation pulse is considered by driving the electronic coherences using a Gaussian envelope. [22,44] Implementation details can be found at. [46] A.…”

Section: Appendix A: Theorymentioning

confidence: 99%

See 3 more Smart Citations

On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs

Bauch,

Siebert,

Jöns

et al. 2023

Adv Quantum Tech

Self Cite

View full text Add to dashboard Cite

The biexciton‐exciton emission cascade commonly used in quantum‐dot systems to generate polarization entanglement yields photons with intrinsically limited indistinguishability. In the present work, it focuses on the generation of pairs of photons with high degrees of polarization entanglement and simultaneously high indistinguishability. It achieves this goal by selectively reducing the biexciton lifetime with an optical resonator. It demonstrates that a suitably tailored circular Bragg reflector fulfills the requirements of sufficient selective Purcell enhancement of biexciton emission paired with spectrally broad photon extraction and twofold degenerate optical modes. The in‐depth theoretical study combines (i) the optimization of realistic photonic structures solving Maxwell's equations from which model parameters are extracted as input for (ii) microscopic simulations of quantum‐dot cavity excitation dynamics with full access to photon properties. It reports non‐trivial dependencies on system parameters and use the predictive power of the combined theoretical approach to determine the optimal range of Purcell enhancement that maximizes indistinguishability and entanglement to near unity values, here specifically for the telecom C‐band at 1550 nm.

show abstract

Section: Discussionmentioning

confidence: 99%

“…with the biexciton-cavity Hamiltonian [22,44] in the interaction frame and in the rotating frame picture…”

Section: Appendix A: Theorymentioning

confidence: 99%

“…We incorporate electron-phonon coupling using the polaron approach described in ref. [22,37,38,44]. Markovian losses are considered using the Lindblad-operator…”

Section: Appendix A: Theorymentioning

confidence: 99%

“…The optical excitation pulse is considered by driving the electronic coherences using a Gaussian envelope. [22,44] Implementation details can be found at. [46] A.…”

Section: Appendix A: Theorymentioning

confidence: 99%

See 2 more Smart Citations

On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs

Bauch,

Siebert,

Jöns

et al. 2023

Adv Quantum Tech

Self Cite

View full text Add to dashboard Cite

show abstract

Harmonizing single photons with a laser pulse

Zhai

Javadi

2022

Nat. Nanotechnol.

View full text Add to dashboard Cite

Time-bin entanglement in the deterministic generation of linear photonic cluster states

Bauch,

Köcher,

Heinisch

et al. 2024

APL Quantum

View full text Add to dashboard Cite

We theoretically investigate strategies for the deterministic creation of trains of time-bin entangled photons using an individual quantum emitter described by a Λ-type electronic system. We explicitly demonstrate the theoretical generation of linear cluster states with substantial numbers of entangled photonic qubits in full microscopic numerical simulations. The underlying scheme is based on the manipulation of ground state coherences through precise optical driving. One important finding is that the most easily accessible quality metrics, the achievable rotation fidelities, fall short in assessing the actual quantum correlations of the emitted photons in the face of losses. To address this, we explicitly calculate stabilizer generator expectation values as a superior gauge for the quantum properties of the generated many-photon state. With widespread applicability in other emitter and excitation–emission schemes also, our work lays the conceptual foundations for an in-depth practical analysis of time-bin entanglement based on full numerical simulations with predictive capabilities for realistic systems and setups, including losses and imperfections. The specific results shown in the present work illustrate that with controlled minimization of losses and realistic system parameters for quantum-dot type systems, useful linear cluster states of significant lengths can be generated in the calculations, discussing the possibility of scalability for quantum information processing endeavors.

show abstract

Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton

Cited by 4 publications

References 63 publications

On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs

On‐Demand Indistinguishable and Entangled Photons Using Tailored Cavity Designs

Harmonizing single photons with a laser pulse

Time-bin entanglement in the deterministic generation of linear photonic cluster states

Contact Info

Product

Resources

About