Heterodyne measurement of the resonance fluorescence of a single ion

Höffges, J. T.; Baldauf, Hanna‐Mari; Lange, Wolfgang; Walther, H.

doi:10.1080/09500349708231861

Cited by 56 publications

(9 citation statements)

References 30 publications

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“…The coherent part of resonance fluorescence has been previously put to evidence using a heterodyne measurement on the emission of a single ion [19]. However, to the best of our knowledge, a study of its intensity dependence presented in Fig.…”

Section: Coherent Resonance Fluorescencementioning

confidence: 99%

Efficient coupling of photons to a single molecule and the observation of its resonance fluorescence

et al. 2007

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Single dye molecules at cryogenic temperatures display many spectroscopic phenomena known from free atoms and are thus promising candidates for fundamental quantum optical studies. However, the existing techniques for the detection of single molecules have either sacrificed the information on the coherence of the excited state or have been inefficient. Here we show that these problems can be addressed by focusing the excitation light near to the absorption cross section of a molecule. Our detection scheme allows us to explore resonance fluorescence over 9 orders of magnitude of excitation intensity and to separate its coherent and incoherent parts. In the strong excitation regime, we demonstrate the first observation of the Mollow triplet from a single solid-state emitter. Under weak excitation we report the detection of a single molecule with an incident power as faint as 150 attoWatt, paving the way for studying nonlinear effects with only a few photons. * Electronic address: vahid.sandoghdar@ethz.ch 1 arXiv:0707.3398v1 [quant-ph]

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Section: Coherent Resonance Fluorescencementioning

confidence: 99%

Efficient coupling of photons to a single molecule and the observation of its resonance fluorescence

et al. 2007

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“…Despite its conceptual simplicity, it entails a wide range of intriguing phenomena such as the Mollow-triplet emission spectrum [1] and photon antibunching [2,3]. Recently, renewed interest on this topic has emerged due to potential applications in quantum-information science [4] using systems such as trapped atoms or ions, as well as semiconductor quantum dots (QDs).…”

Section: Introductionmentioning

confidence: 99%

Optical and microwave control of resonance fluorescence and squeezing spectra in a polar molecule

et al. 2017

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A two-level quantum emitter with broken inversion symmetry simultaneously driven by an optical field and a microwave field that couples to the permanent dipole's moment is presented. We focus to a situation where the angular frequency of the microwave field is chosen such that it closely matches the Rabi frequency of the optical field, the so-called Rabi resonance condition. Using a series of unitary transformations we obtain an effective Hamiltonian in the double-dressed basis which results in easily solvable Bloch equations which allow us to derive analytical expressions for the spectrum of the scattered photons. We analyze the steady-state population inversion of the system which shows a distinctive behavior at the Rabi resonance with regard to an ordinary two-level nonpolar system. We show that saturation can be produced even in the case that the optical field is far detuned from the transition frequency, and we demonstrate that this behavior can be controlled through the intensity and the angular frequency of the microwave field. The spectral properties of the scattered photons are analyzed and manifest the emergence of a series of Mollow-like triplets which may be spectrally broadened or narrowed for proper values of the amplitude and/or frequency of the low-frequency field. We also analyze the phase-dependent spectrum which reveals that a significant enhancement or suppression of the squeezing at certain sidebands can be produced. These quantum phenomena are illustrated in a recently synthesized molecular complex with high nonlinear optical response although they can also occur in other quantum systems with broken inversion symmetry.

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“…Unlike the spontaneously emitted photons, the elastically scattered photons in the Heitler regime are phase-locked to the excitation laser with ideally infinite mutual coherence, accentuating their potential for quantum interference 18 . In wellisolated experimental systems, such as trapped atoms and ions, this mutual coherence was observed via an optical heterodyning technique 19 , which allowed studying the broadening of elastic scattering owing to motional and vibrational dynamics 20,21 , when the species are driven by a single frequency laser. For semiconductor QDs elastic scattering in resonance fluorescence was observed recently 22,23 , ruling out strong fast dephasing of the optical transition.…”

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Phase-locked indistinguishable photons with synthesized waveforms from a solid-state source

et al. 2013

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Resonance fluorescence in the Heitler regime provides access to single photons with coherence well beyond the Fourier transform limit of the transition, and holds the promise to circumvent environment-induced dephasing common to all solid-state systems. Here we demonstrate that the coherently generated single photons from a single self-assembled InAs quantum dot display mutual coherence with the excitation laser on a timescale exceeding 3 s. Exploiting this degree of mutual coherence, we synthesize near-arbitrary coherent photon waveforms by shaping the excitation laser field. In contrast to post-emission filtering, our technique avoids both photon loss and degradation of the single-photon nature for all synthesized waveforms. By engineering pulsed waveforms of single photons, we further demonstrate that separate photons generated coherently by the same laser field are fundamentally indistinguishable, lending themselves to the creation of distant entanglement through quantum interference.

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Heterodyne measurement of the resonance fluorescence of a single ion

Cited by 56 publications

References 30 publications

Efficient coupling of photons to a single molecule and the observation of its resonance fluorescence

Efficient coupling of photons to a single molecule and the observation of its resonance fluorescence

Optical and microwave control of resonance fluorescence and squeezing spectra in a polar molecule

Phase-locked indistinguishable photons with synthesized waveforms from a solid-state source

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