A frequency-agile microwave-optical interface for superconducting qubits
- URL: http://arxiv.org/abs/2602.24098v1
- Date: Fri, 27 Feb 2026 15:38:09 GMT
- Title: A frequency-agile microwave-optical interface for superconducting qubits
- Authors: Yufeng Wu, Yiyu Zhou, Haoqi Zhao, Danqing Wang, Matthew D. LaHaye, Daniel L. Campbell, Hong X. Tang,
- Abstract summary: Superconducting quantum processors operate at microwave frequencies in millikelvin environments.<n>Coherent microwave-to-optical (M2O) enables superconducting quantum networks by interfacing microwave photons with low-loss optical fiber.<n>We demonstrate a frequency-agile microwave-optical interface that overcomes this bandwidth mismatch by cascading an electro-optic M2O transducer with a multimode microwave-to-microwave (M2M) frequency converter.
- Score: 6.817203480218872
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Superconducting quantum processors operate at microwave frequencies in millikelvin environments, making it challenging to interconnect distant nodes using conventional microwave wiring. Coherent microwave-to-optical (M2O) transduction enables superconducting quantum networks by interfacing itinerant microwave photons with low-loss optical fiber. However, many state-of-the-art transducers provide efficient conversion only over a narrow frequency span, complicating deployment with heterogeneous superconducting devices that are detuned by gigahertz-scale offsets. Here we demonstrate a frequency-agile microwave-optical interface that overcomes this bandwidth mismatch by cascading an electro-optic M2O transducer with a multimode microwave-to-microwave (M2M) frequency converter, with in situ tunability of the microwave resonances in both stages. Using this architecture, we realize continuous frequency coverage from 5.0 to 8.5 GHz within a single system. As an application relevant to superconducting-qubit networking, we use the cascaded M2M-M2O interface to optically read out a superconducting qubit whose readout resonator is detuned by 1.7 GHz from the native M2O microwave resonance, demonstrating a scalable route toward fiber-linked superconducting quantum nodes.
Related papers
- Bose condensation and Bogoliubov excitation in resonator-embedded superconducting qubit network [53.72731614116211]
Superconducting qubit networks (SQNs) embedded in a low-dissipative resonator are a promising device.<n>A quantum ac Stark effect provides by coupling between an SQN and microwave photons of a resonator, leads to a strong nonlinear interaction between photons.
arXiv Detail & Related papers (2026-01-21T15:43:43Z) - Light-Induced Microwave Noise in Superconducting Microwave-Optical
Transducers [1.2874569408514918]
We study light-induced microwave noise in an integrated electro-optical transducer harnessing Pockels effect of thin film lithium niobate.
Our results gain insights into the mechanisms and corresponding mitigation strategies for light-induced microwave noise in superconducting microwave-optical transducers.
arXiv Detail & Related papers (2023-11-14T20:25:34Z) - Coherent control of a superconducting qubit using light [1.9834013025499746]
Superconducting microwave qubits operating in cryogenic environments have emerged as promising candidates for quantum processor nodes.<n>We demonstrate coherent optical control of a superconducting qubit.
arXiv Detail & Related papers (2023-10-24T19:51:39Z) - Terahertz-Mediated Microwave-to-Optical Transduction [0.0]
Transduction of quantum signals between the microwave and the optical ranges will unlock powerful hybrid quantum systems.
Most microwave-to-optical quantum transducers suffer from thermal noise due to pump absorption.
We analyze the coupled thermal and wave dynamics in electro-optic transducers that use a two-step scheme based on an intermediate frequency state in the THz range.
arXiv Detail & Related papers (2023-07-07T19:31:39Z) - An integrated microwave-to-optics interface for scalable quantum
computing [47.187609203210705]
We present a new design for an integrated transducer based on a superconducting resonator coupled to a silicon photonic cavity.
We experimentally demonstrate its unique performance and potential for simultaneously realizing all of the above conditions.
Our device couples directly to a 50-Ohm transmission line and can easily be scaled to a large number of transducers on a single chip.
arXiv Detail & Related papers (2022-10-27T18:05:01Z) - Quantum-limited millimeter wave to optical transduction [50.663540427505616]
Long distance transmission of quantum information is a central ingredient of distributed quantum information processors.
Current approaches to transduction employ solid state links between electrical and optical domains.
We demonstrate quantum-limited transduction of millimeter-wave (mmwave) photons into optical photons using cold $85$Rb atoms as the transducer.
arXiv Detail & Related papers (2022-07-20T18:04:26Z) - High-efficiency microwave-optical quantum transduction based on a cavity
electro-optic superconducting system with long coherence time [52.77024349608834]
Frequency conversion between microwave and optical photons is a key enabling technology to create links between superconducting quantum processors.
We propose a microwave-optical platform based on long-coherence-time superconducting radio-frequency (SRF) cavities.
We show that the fidelity of heralded entanglement generation between two remote quantum systems is enhanced by the low microwave losses.
arXiv Detail & Related papers (2022-06-30T17:57:37Z) - Slowing down light in a qubit metamaterial [98.00295925462214]
superconducting circuits in the microwave domain still lack such devices.
We demonstrate slowing down electromagnetic waves in a superconducting metamaterial composed of eight qubits coupled to a common waveguide.
Our findings demonstrate high flexibility of superconducting circuits to realize custom band structures.
arXiv Detail & Related papers (2022-02-14T20:55:10Z) - Large-bandwidth transduction between an optical single quantum-dot
molecule and a superconducting resonator [0.0]
We show that a large electric dipole moment of an exciton in an optically active quantum dot molecule (QDM) efficiently couples to a microwave resonator field at a single-photon level.
Thanks to the fast exciton decay rate in the QDM, the bandwidth between an optical and microwave resonator photon reaches several 100s of MHz.
arXiv Detail & Related papers (2021-10-07T07:28:27Z) - Waveguide Bandgap Engineering with an Array of Superconducting Qubits [101.18253437732933]
We experimentally study a metamaterial made of eight superconducting transmon qubits with local frequency control.
We observe the formation of super- and subradiant states, as well as the emergence of a polaritonic bandgap.
The circuit of this work extends experiments with one and two qubits towards a full-blown quantum metamaterial.
arXiv Detail & Related papers (2020-06-05T09:27:53Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.