Cavity-enhanced simultaneous dressing of quantum dot exciton and biexciton states

Hargart, F.; Müller, Markus; Roy-Choudhury, Kaushik; Portalupi, Simone Luca; Schneider, Christian; Höfling, Sven; Kamp, M.; Hughes, Stephen; Michler, Peter

doi:10.1103/physrevb.93.115308

Cited by 47 publications

(49 citation statements)

References 41 publications

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“…However, it is usually the case in semiconductor experiments that the QD is weakly coupled to a cavity and the output emission is through the cavity mode. In this case, the field operators a (a † ) (which are unaffected by the polaron transform) describing the cavity mode can be shown to be proportional to the exciton operators σ − (σ + ) [30] and the additional phonon factor need not be included to calculate the cavity-emitted spectrum.…”

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confidence: 99%

Spectral asymmetries in the resonance fluorescence of two-level systems under pulsed excitation

2018

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We present an open-system master equation study of the coherent and incoherent resonance fluorescence spectrum from a two-level quantum system under coherent pulsed excitation. Several pronounced features which differ from the fluorescence under a constant drive are highlighted, including a multi-peak structure and a pronounced off-resonant spectral asymmetry, in stark contrast to the conventional symmetrical Mollow triplet. We also study semiconductor quantum dot systems using a polaron master equation, and show how the key features of dynamic resonance fluorescence change with electron-acoustic-phonon coupling.The theory of resonant scattering of light from a twolevel system (TLS) is a major achievement in quantum optics and provides an experimentally accessible gateway to probing strong-field quantum optics. In recent decades, advances in the ability to coherently manipulate atomic systems with light has allowed for a breadth of technological innovations which harness the quantum mechanical properties of these systems [1]. Furthermore, quantum dots (QDs) -semiconductor materials confined in three dimensions, with excited electron-hole pairs (excitons) mimicking the behaviour of an excited atom, can serve as "artificial atoms", maintaining the physics of the quantized system's interaction with the electromagnetic field, but with tunable properties and potential for scalability [2]. Semiconductor QDs have been the subject of much recent research for their potential as sources of quantum light, particularly single and entangled photons [3]. While constant excitation with a continuous wave (cw) laser drive can be used to create a TLS singlephoton source, often technological proposals require a deterministic source -one that can be triggered on-demand. This is typically done by an optical pulse, which renders resonance fluorescence (RF) of a TLS a genuine timedependent quantum dynamical process.The usual features of the RF spectrum under strong cw excitation manifest as the so-called Mollow triplet [4], where the power spectrum of the scattered field takes on a characteristic three-peak resonance structure due to radiative transitions between eigenstates of the system Hamiltonian, as well as a delta function peak at the (monochromatic) drive frequency corresponding to coherent elastic scattering. However, under excitation by a short pulse, the RF spectrum can take on features which obscure or eliminate this characteristic spectrum, especially under off-resonant excitation. The pulsed RF spectrum has been studied theoretically in atomic systems [5][6][7][8][9][10], and more recently in QD-cavity systems for on-resonance excitation [11], where a dynamic spectrum has been observed in the presence of cavity coupling [12].In this Letter, we describe the unique features of pulsed * c.gustin@queensu.ca RF spectra in depth using a master equation approach, and explore the different effects under time-dependent excitation, which are of interest to emerging experimental studies of pulsed quantum optical systems. In particul...

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confidence: 99%

Spectral asymmetries in the resonance fluorescence of two-level systems under pulsed excitation

2018

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“…For arbitrary excitations, e.g., pulsed scenarios, the time-dependent spectrum at frequency ω is given by [23,30,31] …”

Section: Quantum-dot Model and Theorymentioning

confidence: 99%

“…In the stationary limit, e.g., continuous-wave (cw) excitations, and for long detection times t the physical spectrum becomes proportional [23,32,33] to the well-known Wiener-Khintchine spectrum [29] S cw (ω) = Re…”

Section: Quantum-dot Model and Theorymentioning

confidence: 99%

“…Although this contribution is expected to be small (typically δ < 1 μeV [23,31]) compared to the pure dephasing (typically several μeV [23,27]), we discuss its influence on the emission spectrum for completeness. Radiative decay can be modeled by introducing an additional Lindblad term [15] to the equation of motion (2),…”

Section: Appendix A: Radiative Decaymentioning

confidence: 99%

“…Our general emission scheme has recently been introduced in the context of full and all-optical control on a single photon's polarization state [15]. It is based on a nondegenerate enhanced two-photon emission [16,17] from the biexciton to the ground state in a commonly available solid-state system, a single semiconductor QD inside an optical microcavity [18][19][20][21][22][23][24][25][26]. As illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

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All-optical tailoring of single-photon spectra in a quantum-dot microcavity system

et al. 2016

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Semiconductor quantum-dot cavity systems are promising sources for solid-state-based on-demand generation of single photons for quantum communication. Commonly, the spectral characteristics of the emitted single photon are fixed by system properties such as electronic transition energies and spectral properties of the cavity. In the present work we study cavity-enhanced single-photon generation from the quantum-dot biexciton through a partly stimulated nondegenerate two-photon emission. We show that frequency and linewidth of the single photon can be fully controlled by the stimulating laser pulse, ultimately allowing for efficient all-optical spectral shaping of the single photon.

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Entangled Photon‐Magnon Bundle Emission

Bin,

Qiu,

et al. 2024

Laser & Photonics Reviews

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Multiquanta correlation between quanta of a completely different nature is an important resource for hybrid quantum information processing since it allows quantum states of matters to be manipulated by other degrees of freedom. Here, a method is proposed to realize the hybrid bundle emission of strongly correlated single photons and magnons. The optically driven multiquanta resonance leads to the super‐Rabi oscillation between the vacuum state and photon‐magnon state, which, combined with system dissipations, generates photon‐magnon bundle emission. Interestingly, accompanied by this bundle emission, the photon‐magnon entanglement and fully inseparable photon‐magnon‐qubit tripartite entanglement are achieved. This allows the proposed hybrid system to serve as a quantum emitter of entangled photon‐magnon bundle, which is useful for building hybrid quantum network and the engineering of new types of quantum devices.

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Cavity-enhanced simultaneous dressing of quantum dot exciton and biexciton states

Cited by 47 publications

References 41 publications

Spectral asymmetries in the resonance fluorescence of two-level systems under pulsed excitation

Spectral asymmetries in the resonance fluorescence of two-level systems under pulsed excitation

All-optical tailoring of single-photon spectra in a quantum-dot microcavity system

Entangled Photon‐Magnon Bundle Emission

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