Visible-to-Telecom Quantum Frequency Conversion of Light from a Single Quantum Emitter

Zaske, Sebastian; Lenhard, Andreas; Kessler, Christian; Kettler, J.; Hepp, Christian; Arend, Carsten; Albrecht, R.; Schulz, Wolfgang-Michael; Jetter, Michael; Michler, Peter; Becher, Christoph

doi:10.1103/physrevlett.109.147404

Cited by 268 publications

(224 citation statements)

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“…Telecom frequency conversion of photons connected to several examples of quantum matter has recently been demonstrated, including quantum dots [21][22][23][24], cold gas atomic ensembles [25][26][27] and solid-state ensembles [28]. Applying QFC to trapped ions is challenging.…”

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confidence: 99%

Polarisation-preserving photon frequency conversion from a trapped-ion-compatible wavelength to the telecom C-band

et al. 2017

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Given the great success in encoding, manipulating, storing and reading-out quantum information in their electronic states, trapped atomic ions represent a powerful platform with which to build, or integrate into, the nodes of quantum networks [5,6]. Indeed, an elementary quantum network consisting of ions in two traps a few meters apart, has been entangled via travelling ultraviolet photons [7]. A challenge is that most readily-accessible photonic transitions in trapped ions lie at wavelengths that suffer significant absorption loss in materials for manipulating and guiding light, thereby limiting the internode networking distance. Another challenge is that ionic transitions are fixed and narrowband, such that, except in rare cases [8], they cannot be interfaced with other examples of quantum matter to enable new ion-hybrid quantum systems [9]. Note that frequency-distinguishable quantum systems can be linked via their photons, though at the cost of reducing the efficiency of making that link [10].The aforementioned challenges could be overcome using quantum frequency conversion (QFC) [11,12]; a nonlinear optical process in which a photon of one frequency is converted to another, whilst preserving all the quantum and classical photon properties. QFC of single photons has recently been studied in a variety of contexts [13][14][15][16][17][18] and is typically achieved using three-wave mixing in a secondorder non-linear ( 2 ) crystal. It has been shown that QFC can preserve a broad range of photon properties, including first-and second-order coherence, and pre-existing photonphoton entanglement [12,19,20]. QFC could, therefore, act as a quantum photonic adapter for trapped ions, allowing their high-energy photonic transitions to be interfaced with the lower-energy photons better suited for long-distance travel through optical fibers, or with other forms of quantum matter.Interfacing trapped ions with the telecom wavelengths of 1310 nm (O band) or 1550 nm (C band) is particularly Abstract We demonstrate polarisation-preserving frequency conversion of single-photon-level light at 854 nm, resonant with a trapped-ion transition and qubit, to the 1550-nm telecom C band. A total photon in / fiber-coupled photon out efficiency of ∼30% is achieved, for a free-running photon noise rate of ∼60 Hz. This performance would enable telecom conversion of 854 nm polarisation qubits, produced in existing trapped-ion systems, with a signal-to-noise ratio greater than 1. In combination with near-future trappedion systems, our converter would enable the observation of entanglement between an ion and a photon that has travelled more than 100 km in optical fiber: three orders of magnitude further than the state-of-the-art.

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Polarisation-preserving photon frequency conversion from a trapped-ion-compatible wavelength to the telecom C-band

et al. 2017

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“…To this end, bridging the gap between low loss telecom wavelengths for long-range communication and the atomic wavelengths quantum frequency conversion (QFC) is necessary [14][15][16]. In the present experiment we produce frequency-degenerate photon pairs, generated by spontaneous parametric down conversion (SPDC), resonant with an atomic transition of 40 Ca + at 854 nm.…”

Section: Introductionmentioning

confidence: 99%

“…One photon serves as a herald, which is detected by a silicon avalanche photon detector (Si-APD, Perkin Elmer SPCM-AQR-14, 30 % detection efficiency at 854 nm), while its partner photon is sent to the frequency converter setup. For frequency conversion we make use of difference frequency generation in a periodically poled lithium niobate ridge waveguide (similar to the device described in [15]). The conversion from λ s = 854 nm to the telecommunications Oband around λ i = 1310 nm is stimulated by a strong coherent pump field at a wavelength of λ p = 2453 nm (1/λ s − 1/λ p = 1/λ i ).…”

Section: Quantum and Classical Channel In A Single Fibermentioning

confidence: 99%

“…For this purpose, we pump a lithium niobate waveguide [15] at a wavelength of 708 nm to generate SPDC photons at 1535 nm and 1313 nm with bandwidths of approximately 1 THz, respectively (details about SPDC in this particular device can be found in [17]). Both photons are sent through long single mode fibers (SMF-28e) before separating them with a wavelength division multiplexer (WDM).…”

Section: Fiber Characterizationmentioning

confidence: 99%

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Single telecom photon heralding by wavelength multiplexing in an optical fiber

et al. 2016

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We demonstrate the multiplexing of a classical coherent and a quantum state of light in a single telecommunciation fiber. For this purpose we make use of spontaneous parametric down conversion and quantum frequency conversion to generate photon pairs at 854 nm and the telecom O-band. The herald photon triggers a telecom C-band laser pulse. The telecom single photon and the laser pulse are combined and coupled to a standard telecom fiber. Low background time correlation of the classical and quantum signal behind the fiber shows successful telecommunication channel multiplexing.

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“…However, due to the large radiative and nonradiative losses of the plasmon [15][16][17] , it is difficult to efficiently excite nanomaterials by weak light. If the losses in the antenna are successfully suppressed, we can expect the antenna-assisted system to be applied to key technologies in quantum information, communication and computation such as visible-totelecom frequency conversion of single photons emitted by a quantum dot 18 and single-photon switch 19,20 . In the previous work, we theoretically demonstrated optical linear responses on a antenna-molecule coupled system and reported that the molecule efficiently absorbs the incident light energy with the loss in the antenna suppressed.…”

Section: Introductionmentioning

confidence: 99%

Two-photon upconversion affected by intermolecule correlations near metallic nanostructures

2016

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We investigate an efficient two-photon up-conversion process in more than one molecule coupled to an optical antenna. In the previous work [Y. Osaka et al., PRL 112, 133601 (2014)], we considered the two-photon up-conversion process in a single molecule within one-dimensional inputoutput theory, and revealed that controlling the antenna-molecule coupling enables the efficient up-conversion with radiative loss in the antenna suppressed. In this work, aiming to propose a way to enhance the total probability of antenna-photon scattering, we extend the model to the case of multiple molecules. In general, the presence of more than one molecule decreases the up-conversion probability because they equally share the energy of the two photons. However, it is shown that we can overcome the difficulty by controlling the inter-molecule coupling. Our result implies that, without increasing the incident photon number (light power), we can enlarge the net probability of the two-photon up-conversion.

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Visible-to-Telecom Quantum Frequency Conversion of Light from a Single Quantum Emitter

Cited by 268 publications

References 40 publications

Polarisation-preserving photon frequency conversion from a trapped-ion-compatible wavelength to the telecom C-band

Polarisation-preserving photon frequency conversion from a trapped-ion-compatible wavelength to the telecom C-band

Single telecom photon heralding by wavelength multiplexing in an optical fiber

Two-photon upconversion affected by intermolecule correlations near metallic nanostructures

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