تقرير
Quantum transduction of optical photons from a superconducting qubit
| العنوان: | Quantum transduction of optical photons from a superconducting qubit |
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| المؤلفون: | Mirhosseini, Mohammad, Sipahigil, Alp, Kalaee, Mahmoud, Painter, Oskar |
| المصدر: | Nature, v588, pages 599-603, December 24, 2020 |
| سنة النشر: | 2020 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | Bidirectional conversion of electrical and optical signals lies at the foundation of the global internet. Such converters are employed at repeater stations to extend the reach of long-haul fiber optic communication systems and within data centers to exchange high-speed optical signals between computers. Likewise, coherent microwave-to-optical conversion of single photons would enable the exchange of quantum states between remotely connected superconducting quantum processors, a promising quantum computing hardware platform. Despite the prospects of quantum networking, maintaining the fragile quantum state in such a conversion process with superconducting qubits has remained elusive. Here we demonstrate the conversion of a microwave-frequency excitation of a superconducting transmon qubit into an optical photon. We achieve this using an intermediary nanomechanical resonator which converts the electrical excitation of the qubit into a single phonon by means of a piezoelectric interaction, and subsequently converts the phonon to an optical photon via radiation pressure. We demonstrate optical photon generation from the qubit with a signal-to-noise greater than unity by recording quantum Rabi oscillations of the qubit through single-photon detection of the emitted light over an optical fiber. With proposed improvements in the device and external measurement set-up, such quantum transducers may lead to practical devices capable of realizing new hybrid quantum networks, and ultimately, distributed quantum computers. Comment: 17 pages, 11 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1038/s41586-020-3038-6 |
| URL الوصول: | http://arxiv.org/abs/2004.04838 |
| رقم الأكسشن: | edsarx.2004.04838 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1038/s41586-020-3038-6 |
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