Cavity quantum electrodynamics with a single quantum dot coupled to a photonic molecule

Majumdar, Arka; Rundquist, Armand; Bajcsy, Michal; Vučković, Jelena

doi:10.1103/physrevb.86.045315

Cited by 92 publications

(80 citation statements)

References 31 publications

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“…We note that the mean µ of the mode separations is a combination of the coupling strength and the disorder, whereas the standard deviation σ of the mode separations depends mostly on the disorder, as explained earlier. To elaborate further, we can consider the simple example of a photonic molecule (two coupled cavities), where the observed separation ∆ between two modes is ∆ 2 0 + 4J 2 with ∆ 0 being the random bare detuning between the cavities due to fabrication imperfection and J being the the coupling strength [16]. We assume that the bare detuning follows a Gaussian probability distribution with zero mean and standard deviation σ f , i.e., the probability of having a detuning ∆ 0 is…”

Section: Spectra Of Coupled Cavitiesmentioning

confidence: 99%

Design and analysis of photonic crystal coupled cavity arrays for quantum simulation

et al. 2012

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We performed an experimental study of coupled optical cavity arrays in a photonic crystal platform. We find that the coupling between the cavities is significantly larger than the fabricationinduced disorder in the cavity frequencies. Satisfying this condition is necessary for using such cavity arrays to generate strongly correlated photons, which has potential application to the quantum simulation of many-body systems.

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Section: Spectra Of Coupled Cavitiesmentioning

confidence: 99%

Design and analysis of photonic crystal coupled cavity arrays for quantum simulation

et al. 2012

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“…1. This system can be realized in nanocavities, using micropillars [38][39][40] , microdiscs 41 , and photonic crystals (PhCs) [42][43][44][45] . Cavity resonance frequencies (ω 1 and ω 2 for cavity 1 and cavity 2, respectively) are tuned close to the QD-biexciton two-photon resonance,…”

Section: A Preparation Of 2002-ges In Qd-coupled-cavity Systemsmentioning

confidence: 99%

“…by temperature tuning technique 32,52 and by xenon gas deposition technique 53 . Tunneling parameter J depends on a distance between cavities, meV order for direct coupling 42 and tens of µeV for waveguide mediated coupling 43 . Especially for the latter case, J is electrically controllable 54 with high precision in a range of µeV, using an extra control cavity 55 .…”

Section: A Preparation Of 2002-ges In Qd-coupled-cavity Systemsmentioning

confidence: 99%

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Method for generating a photonic NOON state with quantum dots in coupled nanocavities

et al. 2017

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We propose a method to generate path-entangled N 00N -state photons from quantum dots (QDs) and coupled nanocavities. In the systems we considered, cavity mode frequencies are tuned close to the biexciton two-photon resonance. Under appropriate conditions, the system can have the target N 00N state in the energy eigenstate, as a consequence of destructive quantum interference. The N 00N state can be generated by the resonant laser excitation. This method, first introduced for two-photon N 00N state (N = 2), can be extended toward higher N 00N state (N > 2) based on our recipe, which is applied to the case of N = 4 as an example.

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“…Recently, we have demonstrated that a photonic molecule can solve this problem 5 . A photonic molecule is composed of two cavities coupled by a fast photon tunneling interaction [3][4][5][6][7] . These photonic structures exhibit two non-degenerate modes, one that strongly couples to the quantum dot and a second that can induce a cavity-enhanced AC Stark effect.…”

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confidence: 99%

All-optical coherent control of vacuum Rabi oscillations

et al. 2014

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These authors contributed equally * Correspondence should be sent to E.W.: edowaks@umd.edu When an atom strongly couples to a cavity, it can undergo coherent vacuum Rabi oscillations.Controlling these oscillatory dynamics quickly relative to the vacuum Rabi frequency enables remarkable capabilities such as Fock state generation and deterministic synthesis of quantum states of light, as demonstrated using microwave frequency devices 1,2 . At optical frequencies, however, dynamical control of single-atom vacuum Rabi oscillations remains challenging. Here, we demonstrate coherent transfer of optical frequency excitation between a single quantum dot and a cavity by controlling vacuum Rabi oscillations. We utilize a photonic molecule 3-7 to simultaneously attain strong coupling and a cavity-enhanced AC Stark shift. The Stark shift modulates the detuning between the two systems on picosecond timescales, faster than the vacuum Rabi frequency. We demonstrate the ability to add and remove excitation from the cavity, and perform coherent control of light-matter states. These results enable ultra-fast control of atom-cavity interactions in a nanophotonic device platform.Much of the prior work investigating atomic systems strongly coupled to optical cavities has operated in the static regime. In this regime the coupling between the two systems remains constant and 2 the signature of strong coupling is observed either in the frequency domain in the form of vacuum Rabi splitting [8][9][10][11] , or by direct time-domain observation of vacuum Rabi oscillations 12 . Recently, there has been significant experimental progress in optically controlling the dynamical response of atomic systems strongly coupled to cavities for applications such as optical switching [13][14][15][16] , reversible storage of photonic qubits 17,18 , and hybrid quantum information processing 19,20 . These works have all operated in the adiabatic regime where the duration of the optical control pulse was long compared to the vacuum Rabi frequency.When the interaction between the atom and cavity is modulated fast compared the vacuum Rabi frequency, the system undergoes diabatic rapid passage. In this regime it becomes possible to coherently transfer energy between an atomic excitation and a cavity photon by directly controlling vacuum Rabi oscillations. This coherent transfer has been effectively implemented at microwave frequencies and has enabled capabilities such as Fock state generation 1 and synthesis of arbitrary photonic wavefunctions 2 . At optical frequencies, however, diabatic control of vacuum Rabi oscillations between a single atomic system and a cavity remains difficult.In this letter we report a demonstration of controlled transfer of excitation between a semiconductor quantum dot and a strongly coupled optical cavity by directly controlling vacuum Rabi oscillations diabatically. We use a pulsed AC Stark shift to control the detuning between the quantum dot and cavity on picosecond timescales, enabling ultra-fast control of light-matter intera...

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Cavity quantum electrodynamics with a single quantum dot coupled to a photonic molecule

Cited by 92 publications

References 31 publications

Design and analysis of photonic crystal coupled cavity arrays for quantum simulation

Design and analysis of photonic crystal coupled cavity arrays for quantum simulation

Method for generating a photonic NOON state with quantum dots in coupled nanocavities

All-optical coherent control of vacuum Rabi oscillations

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