Memory-assisted multimode microwave-to-optical transduction

• URL: http://arxiv.org/abs/2605.01239v1
• Date: Sat, 02 May 2026 04:30:07 GMT
• Title: Memory-assisted multimode microwave-to-optical transduction
• Abstract summary: Microwave-to-optical quantum transducers will enable coherent interconnection between superconducting quantum devices.<n>A memory-assisted transducer offers a versatile approach that mitigates the noise but also enables the on-demand retrieval of the transduced signal.<n>This is the first demonstration of an on-demand microwave-to-optical transducer assisted by memory.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Microwave-to-optical quantum transducers will enable coherent interconnection between distant superconducting quantum devices. Ongoing explorations with several platforms have shown promising results at single-photon levels. However, in all these demonstrations, elimination of noise due to the concurrence of the weak transduced signal with intense pump pulses remains a challenge, requiring high suppression filtering setups. A memory-assisted transducer, on the other hand, offers a versatile approach that not only mitigates the noise but also enables the on-demand retrieval of the transduced signal. Here, we integrate a quantum memory protocol with transduction in a three-level atomic system to demonstrate on-demand retrieval of transduced signals. Due to the zero-first-order Zeeman transitions at zero magnetic fields, providing long optical and spin coherence times, and GHz range hyperfine splitting, we use a low-doping concentration $^{171}{\rm Yb}^{3+}$:${\rm Y}_2{\rm SiO}_5$ crystal at 30\,mK temperature. We achieve on-demand transduction assisted by memory with $0.4\ (\text{and }0.3)$ noise photons in the detection window at a storage duration of $460\ (\text{and }620) \, μ\textrm{s}$. To demonstrate the coherent nature of the protocol, we show interference patterns resulting from transduced signals due to varying phase or frequency of the input microwave pulses. Further, multimode transduction capacity is demonstrated, utilizing the spin and optical inhomogeneous broadening. The on-demand capability of the protocol allows synchronizing qubits in a quantum repeater protocol, while multimode capacity increases the entanglement generation rate. To the best of our knowledge, this is the first demonstration of an on-demand microwave-to-optical transducer assisted by memory.

Related papers

• Coherent microwave-to-optical transduction with Yb:YSO spins strongly coupled to a 3D resonator [0.0]
  Microwave-to-optical quantum transducers are essential for entangling remote superconducting qubits.<n> ensembles of Er$3+$ and Yb$3+$ ions doped into solids have emerged as leading candidates.<n>We demonstrate microwave-to-optical transduction in the continuous-wave regime using a 5,ppm doped Yb:YSO crystal.
  arXiv  Detail & Related papers  (2026-09-02T07:37:10Z)
• Electro-optic conversion of itinerant Fock states [0.3871995016053977]
  Superconducting qubits are a leading candidate for utility-scale quantum computing.<n>We demonstrate the on-demand generation and tomographic reconstruction of itinerant single microwave photons at 8.9 GHz from a superconducting qubit.<n>We characterize the trade-offs between throughput and noise, and establish a viable path toward heralded entanglement distribution and gate teleportation.
  arXiv  Detail & Related papers  (2026-01-31T22:57:06Z)
• Integrated polarization-entangled photon source for wavelength-multiplexed quantum networks [49.82426139329382]
  We present a simple yet high-performance on-chip polarization-entangled photon-pair source on thin-film lithium niobate (TFLN)<n>Our device employs dual quasi-phase matching (D-QPM) that sequentially supports type-0 and type-I spontaneous parametric down-conversion in a single nanophotonic waveguide.<n>We realize wavelength-multiplexed entanglement distribution in a four-user quantum network deployed over metropolitan fiber links up to 50 km.
  arXiv  Detail & Related papers  (2025-11-27T18:30:01Z)
• Multimode and Random-Access Optical Quantum Memory via Adiabatic Phase Imprinting [0.0]
  photonic quantum memory capable of simultaneously storing multiple qubits and subsequently recalling any randomly selected subset of qubits is essential for large-scale quantum networking and computing.<n>We introduce an alternate protocol that employs Rapid Adiabatic Passage (RAP) rephasing pulses, to realize quantum memory.<n>We demonstrate the storage and retrieval of multiple intricate spectro-temporally photonic modes and achieve optical random access memory across eight distinct spectral modes.
  arXiv  Detail & Related papers  (2025-06-13T20:49:09Z)
• Enhancement of Microwave to Optical Spin-Based Quantum Transduction via a Magnon Mode [0.0]
  We propose a new method for converting single microwave photons to single optical sideband photons based on spinful impurities in magnetic materials. We identify the needed magnetic interactions as well as potential materials systems to enable this speed-up using erbium dopants for telecom compatibility.
  arXiv  Detail & Related papers  (2024-11-19T21:31:37Z)
• Quantum-enabled continuous microwave-to-optics frequency conversion [6.646547697436899]
  A quantum interface between microwave and optical photons is essential for entangling remote superconducting quantum processors. We present a platform that meets these criteria, utilizing a combination of electrostatic and optomechanical interactions in devices made entirely from crystalline silicon.
  arXiv  Detail & Related papers  (2024-06-04T18:34:01Z)
• Multiparameter quantum sensing and magnetic communications with a hybrid dc and rf optically pumped magnetometer [41.94295877935867]
  We introduce and demonstrate a hybrid optically pumped magnetometer (HOPM) that simultaneously measures one dc field component and one RF field component quadrature. The HOPM achieves sub-pT/$sqrtmathrmHz$ sensitivity for both dc and RF fields, and is limited in sensitivity by spin projection noise at low frequencies and by photon shot noise at high frequencies.
  arXiv  Detail & Related papers  (2023-08-27T22:17:21Z)
• 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)
• Ultra-long photonic quantum walks via spin-orbit metasurfaces [52.77024349608834]
  We report ultra-long photonic quantum walks across several hundred optical modes, obtained by propagating a light beam through very few closely-stacked liquid-crystal metasurfaces. With this setup we engineer quantum walks up to 320 discrete steps, far beyond state-of-the-art experiments.
  arXiv  Detail & Related papers  (2022-03-28T19:37:08Z)
• 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)
• High-Fidelity Quantum Information Transmission Using a Room-Temperature Nonrefrigerated Lossy Microwave Waveguide [0.0]
  Quantum microwave transmission is key to realizing modular superconducting quantum computers and distributed quantum networks. The closeness of the transmitted quantum state to the source-generated quantum state at the input of the transmission link degrades due to the presence of incoherent photons. We propose a novel method for high-fidelity quantum microwave transmission using a room-temperature lossy waveguide.
  arXiv  Detail & Related papers  (2021-07-26T22:41:18Z)
• A Frequency-Multiplexed Coherent Electro-Optic Memory in Rare Earth Doped Nanoparticles [94.37521840642141]
  Quantum memories for light are essential components in quantum technologies like long-distance quantum communication and distributed quantum computing. Recent studies have shown that long optical and spin coherence lifetimes can be observed in rare earth doped nanoparticles. We report on coherent light storage in Eu$3+$:Y$$O$_3$ nanoparticles using the Stark Echo Modulation Memory (SEMM) quantum protocol.
  arXiv  Detail & Related papers  (2020-06-17T13:25:54Z)

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.