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Entangling superconducting quantum processors via light would enable new means of secure communication and distributed quantum computing. However, transducing quantum signals between these disparate regimes of the electromagnetic spectrum…

We develop a high speed on-chip flux measurement using a capacitively shunted SQUID as an embedded cryogenic transducer and apply this technique to the qualification of a near-term scalable printed circuit board (PCB) package for frequency…

As experimental quantum information processing (QIP) rapidly advances, an emerging challenge is to design a scalable architecture that combines various quantum elements into a complex device without compromising their performance. In…

Quantum Physics · Physics 2015-09-15 T. Brecht , W. Pfaff , C. Wang , Y. Chu , L. Frunzio , M. H. Devoret , R. J. Schoelkopf

Low-loss fiber optic links have the potential to connect superconducting quantum processors together over long distances to form large scale quantum networks. A key component of these future networks is a quantum transducer that coherently…

Scalable interferometers lie at the heart of photonic quantum technologies, but their expansion has been fundamentally limited by optical losses that grow with circuit depth. Here, we introduce and experimentally demonstrate a…

Quantum Physics · Physics 2025-12-22 Abhinav Verma , Jacob Hastrup , Jonas S. Neergaard-Nielsen , Ulrik L. Andersen

A quantum memory that can store quantum states faithfully and retrieve them on demand has wide applications in quantum information science. An efficient quantum memory in the microwave regime working alongside quantum processors based on…

Quantum Physics · Physics 2021-11-11 Zenghui Bao , Zhiling Wang , Yukai Wu , Yan Li , Cheng Ma , Yipu Song , Hongyi Zhang , Luming Duan

Photonic integrated circuits (PICs) have emerged as a scalable platform for complex quantum technologies using photonic and atomic systems. A central goal has been to integrate photon-resolving detectors to reduce optical losses, latency,…

On-chip photonic processors for neural networks have potential benefits in both speed and energy efficiency but have not yet reached the scale at which they can outperform electronic processors. The dominant paradigm for designing on-chip…

By strongly driving a cyclic-transition three-level artificial atom, demonstrated by such as a flux-based superconducting circuit, we show that coherent microwave signals can be excited along a coupled one-dimensional transmission line.…

Quantum Physics · Physics 2015-05-20 W. Z. Jia , L. F. Wei , Z. D. Wang

Recent advances in quantum electronics have allowed to engineer hybrid nano-devices comprising on chip a microwave electromagnetic resonator coupled to an artificial atom, a quantum dot. These systems realize novel platforms to explore…

Mesoscale and Nanoscale Physics · Physics 2014-07-25 Marco Schiró , Karyn Le Hur

The quantum transduction, or equivalently quantum frequency conversion, is vital for the realization of, e.g., quantum networks, distributed quantum computing, and quantum repeaters. The microwave-to-optical quantum transduction is of…

Quantum Physics · Physics 2026-03-24 Akihiko Sekine , Ryo Murakami , Yoshiyasu Doi

We demonstrate a hybrid architecture consisting of a quantum dot circuit coupled to a single mode of the electromagnetic field. We use single wall carbon nanotube based circuits inserted in superconducting microwave cavities. By probing the…

Mesoscale and Nanoscale Physics · Physics 2011-12-23 M. R. Delbecq , V. Schmitt , F. D. Parmentier , N. Roch , J. J. Viennot , G. Fève , B. Huard , C. Mora , A. Cottet , T. Kontos

Mediated photon-photon interactions are realized in a superconducting coplanar waveguide cavity coupled to a superconducting charge qubit. These non-resonant interactions blockade the transmission of photons through the cavity. This…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 A. J. Hoffman , S. J. Srinivasan , S. Schmidt , L. Spietz , J. Aumentado , H. E. Türeci , A. A. Houck

Superconducting quantum computing has the potential to revolutionize computational capabilities. However, scaling up large quantum processors is limited by the cumbersome and heat-conductive electronic cables that connect room-temperature…

Coherent pulse control for quantum memory is viable in the optical domain but nascent in microwave quantum circuits. We show how to realize coherent storage and on-demand pulse retrieval entirely within a superconducting circuit by…

Quantum Physics · Physics 2015-03-20 Patrick M. Leung , Barry C. Sanders

Efficient transduction of electromagnetic signals between different frequency scales is an essential ingredient for modern communication technologies as well as for the emergent field of quantum information processing. Recent advances in…

Quantum Physics · Physics 2019-11-27 Vincent E. Elfving , Sumanta Das , Anders S. Sørensen

Quantum routers are essential elements of quantum networks, enabling coherent information transfer between distant nodes. While their behavior has been extensively studied under Markovian approximations, investigations in non-Markovian…

Optics · Physics 2025-03-25 T. Z. Luan , Cheng Shang , H. Yi , J. L. Li , Yan-Hui Zhou , Shuang Xu , H. Z. Shen

Integrated quantum photonic waveguide circuits are a promising approach to realizing future photonic quantum technologies. Here, we present an integrated photonic quantum technology platform utilising the silicon-on-insulator material…

Two-way microwave-optical quantum transduction is essential to connecting distant superconducting qubits via optical fiber, and to enable quantum networking at a large scale. In Bl\'esin, Tian, Bhave, and Kippenberg's article, ``Quantum…

Practical quantum networks require low-loss and noise-resilient optical interconnects as well as non-Gaussian resources for entanglement distillation and distributed quantum computation. The latter could be provided by superconducting…

Quantum Physics · Physics 2020-09-23 G. Arnold , M. Wulf , S. Barzanjeh , E. S. Redchenko , A. Rueda , W. J. Hease , F. Hassani , J. M. Fink