Superconducting qubit to optical photon transduction

Mirhosseini, Mohammad; Sipahigil, Alp; Kalaee, Mahmoud; Painter, Oskar

doi:10.1038/s41586-020-3038-6

Cited by 363 publications

(229 citation statements)

References 40 publications

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“…Finally, our results also indicate the prospects for real-life local area quantum networks based on transmon quantum computers in which physical distances can be mediated by microwave photons. While this quantum transduction might still be a few years ahead, there have already been significant steps towards developing such a quantum-coherent, bidirectional transducer between microwave and optical frequencies [25][26][27][28][29][30][31] . This would be an interesting endeavour for future research.…”

Section: Discussionmentioning

confidence: 99%

Demonstrating the power of quantum computers, certification of highly entangled measurements and scalable quantum nonlocality

2021

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Increasingly sophisticated quantum computers motivate the exploration of their abilities in certifying genuine quantum phenomena. Here, we demonstrate the power of state-of-the-art IBM quantum computers in correlation experiments inspired by quantum networks. Our experiments feature up to 12 qubits and require the implementation of paradigmatic Bell-State Measurements for scalable entanglement-swapping. First, we demonstrate quantum correlations that defy classical models in up to nine-qubit systems while only assuming that the quantum computer operates on qubits. Harvesting these quantum advantages, we are able to certify 82 basis elements as entangled in a 512-outcome measurement. Then, we relax the qubit assumption and consider quantum nonlocality in a scenario with multiple independent entangled states arranged in a star configuration. We report quantum violations of source-independent Bell inequalities for up to ten qubits. Our results demonstrate the ability of quantum computers to outperform classical limitations and certify scalable entangled measurements.

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Section: Discussionmentioning

confidence: 99%

Demonstrating the power of quantum computers, certification of highly entangled measurements and scalable quantum nonlocality

2021

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“…A primary example is to convert quantum states encoded in microwave photons to optical frequencies, which would enable distributed quantum computing schemes based on superconducting qubits or spin qubits [7]. Many physical systems have been proposed for microwave to optical (M2O) transduction [8,9], including optomechanical systems [10,11], electro-optical systems [12,13], atomic ensembles [14,15] and others [16,17]. Among the atomic ensemble approaches, rare-earth ions (REIs) in solids are a promising platform for M2O transduction applications [14,18,19,20,21].…”

Section: I: Introductionmentioning

confidence: 99%

Characterization of Er3+:YVO4 for microwave to optical transduction

et al. 2021

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Quantum transduction between microwave and optical frequencies is important for connecting superconducting quantum platforms in a quantum network. Ensembles of rare-earth ions are promising candidates to achieve this conversion due to their collective coherent properties at microwave and optical frequencies. Erbium ions are of particular interest because of their telecom wavelength optical transitions that are compatible with fiber communication networks. Here, we report the optical and electron spin properties of erbium doped yttrium orthovanadate (Er 3+ :YVO4), including high-resolution optical spectroscopy, electron paramagnetic resonance studies and an initial demonstration of microwave to optical conversion of classical fields. The highly absorptive optical transitions and narrow ensemble linewidths make Er 3+ :YVO4 promising for magneto-optic quantum transduction.

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“…On the other hand, the elementary quantum processors and memories based on atoms [6][7][8] , spins in quantum dots 9 , or superconducting qubits 10 , operate in different frequency regions. Thus, the realization of networks connecting disparate quantum systems 11,12 requires the development of quantum interfaces, capable of bridging the frequency gap [13][14][15] . The bidirectional transfer of quantum information relies on mechanisms that shift a quantum state of light from its original frequency band to a desired one, while preserving all other quantum properties 16,17 .…”

Section: Introductionmentioning

confidence: 99%

Photon pumping in a weakly-driven quantum cavity–spin system

Psaroudaki

Refael

2021

Annals of Physics

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Superconducting qubit to optical photon transduction

Cited by 363 publications

References 40 publications

Demonstrating the power of quantum computers, certification of highly entangled measurements and scalable quantum nonlocality

Demonstrating the power of quantum computers, certification of highly entangled measurements and scalable quantum nonlocality

Characterization of Er3+:YVO4 for microwave to optical transduction

Photon pumping in a weakly-driven quantum cavity–spin system

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