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A complete physical approach to quantum information requires a robust interface among flying qubits, long-lifetime memory and computational qubits. Here we present a unified interface for microwave and optical photons, potentially…

Quantum Physics · Physics 2012-03-01 M. Hafezi , Z. Kim , S. L. Rolston , L. A. Orozco , B. L. Lev. , J. M. Taylor

A quantum internet, where widely separated quantum devices are coherently connected, is a fundamental vision for local and global quantum information networks and processing. Superconducting quantum devices can now perform sophisticated…

Quantum Physics · Physics 2015-07-02 Keyu Xia , Michael R. Vanner , Jason Twamley

We propose an efficient light-matter interface at optical frequencies between a single photon and a superconducting qubit. The desired interface is based on a hybrid architecture composed of an organic molecule embedded inside an optical…

Quantum Physics · Physics 2017-04-12 Sumanta Das , Vincent E. Elfving , Sanli Faez , Anders S. Sørensen

Delivering on the revolutionary promise of a universal quantum computer will require processors with millions of quantum bits (qubits). In superconducting quantum processors, each qubit is individually addressed with microwave signal lines…

Quantum Physics · Physics 2021-05-12 F. Lecocq , F. Quinlan , K. Cicak , J. Aumentado , S. A. Diddams , J. D. Teufel

The strong coupling between individual optical emitters and propagating surface plasmons confined to a conducting nanotip make this system act as an ideal interface for quantum networks, through which a stationary qubit and a flying photon…

Quantum Physics · Physics 2008-12-05 Fang-Yu Hong , Shi-Jie Xiong

Controlling and swapping quantum information in a quantum coherent way between the microwave and optical regimes is essential for building long-range superconducting quantum networks but extremely challenging. We propose a hybrid quantum…

Quantum Physics · Physics 2018-05-23 Keyu Xia , Fedor Jelezko , Jason Twamley

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…

Quantum Physics · Physics 2020-12-29 Mohammad Mirhosseini , Alp Sipahigil , Mahmoud Kalaee , Oskar Painter

We show that optically active coupled quantum dots embedded in a superconducting microwave cavity can be used to realize a fast quantum interface between photonic and transmon qubits. Single photon absorption by a coupled quantum dot…

Quantum Physics · Physics 2017-11-01 Yuta Tsuchimoto , Patrick Knüppel , Aymeric Delteil , Zhe Sun , Martin Kroner , Ataç Imamoğlu

We discuss the implementation of optical quantum networks where the interface between stationary and photonic qubits is realized by optomechanical transducers [K. Stannigel et al., PRL 105, 220501 (2010)]. This approach does not rely on the…

Quantum Physics · Physics 2012-01-04 K. Stannigel , P. Rabl , A. S. Sørensen , M. D. Lukin , P. Zoller

We propose a new scheme for quantum computation using flying qubits--propagating photons in a one-dimensional waveguide--interacting with matter qubits. Photon-photon interactions are mediated by the coupling to a three- or four-level…

Quantum Physics · Physics 2013-08-30 Huaixiu Zheng , Daniel J. Gauthier , Harold U. Baranger

Photons at telecom wavelength are the ideal choice for high density interconnects while solid state qubits in the microwave domain offer strong interactions for fast quantum logic. Here we present a general purpose, quantum-enabled…

Quantum Physics · Physics 2022-03-30 Rishabh Sahu , William Hease , Alfredo Rueda , Georg Arnold , Liu Qiu , Johannes Fink

Quantum communications technologies require a network of quantum processors connected with low loss and low noise communication channels capable of distributing entangled states. Superconducting microwave qubits operating in cryogenic…

Networking superconducting quantum computers is a longstanding challenge in quantum science. The typical approach has been to cascade transducers: converting to optical frequencies at the transmitter and to microwave frequencies at the…

We describe an adiabatic state transfer mechanism that allows for high-fidelity transfer of a microwave quantum state from one cavity to another through an optical fiber. The conversion from microwave frequency to optical frequency is…

Quantum Physics · Physics 2014-07-18 B. D. Clader

A quantum network that distributes and processes entanglement would enable powerful new computers and sensors. Optical photons with a frequency of a few hundred terahertz are perhaps the only way to distribute quantum information over long…

A quantum interface between microwave and optical photons is essential for entangling remote superconducting quantum processors. To preserve fragile quantum states, a transducer must operate efficiently while generating less than one photon…

Quantum Physics · Physics 2024-06-06 Han Zhao , William David Chen , Abhishek Kejriwal , Mohammad Mirhosseini

Superconducting quantum circuits operate at millikelvin temperatures, typically requiring independent microwave cables for each qubit for connecting room-temperature control and readout electronics. However, scaling to large-scale…

The complementary features of different qubit platforms for computing and communicating impose an intrinsic hardware heterogeneity in any quantum network, where nodes, while processing and storing quantum information, must also communicate…

Quantum Physics · Physics 2026-01-14 Marcello Caleffi , Laura d'Avossa , Xu Han , Angela Sara Cacciapuoti

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…

Superconducting circuits are a strong contender for realizing quantum computing systems, and are also successfully used to study quantum optics and hybrid quantum systems. However, their cryogenic operation temperatures and the current lack…

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