Ultra-low loss piezo-optomechanical low-confinement silicon nitride platform for visible wavelength quantum photonic circuits

• URL: http://arxiv.org/abs/2603.02584v2
• Date: Wed, 04 Mar 2026 02:32:49 GMT
• Title: Ultra-low loss piezo-optomechanical low-confinement silicon nitride platform for visible wavelength quantum photonic circuits
• Authors: Mayank Mishra, Gwangho Choi, Wenhua He, Gina M. Talcott, Katherine Kearney, Michael Gehl, Andrew Leenheer, Daniel Dominguez, Nils T. Otterstrom, Matt Eichenfield,
• Abstract summary: Quantum computing protocols demand ultralow-loss, low-confinement silicon nitride waveguides.<n>Here, we demonstrate that combining piezo-opto actuation with a low-confinement, ultra-low loss silicon nitride platform addresses the scalability challenge.<n>This platform achieves a propagation loss $0.026mathrmdB/cm at $780mathrmnmdot$$mathrmdot$mmmmmmmmmmmmmmmmmm
• Score: 3.3546195290309093
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The stringent demands of photonic quantum computing protocols motivate photonic integrated circuit (PIC) platforms with passive optical properties such as extremely low losses and correspondingly large circuit depths, as well as active optical properties such as high reconfiguration rates, low power dissipation, and minimal crosstalk. At the same time, many quantum photonic resource state generators, such as single-photon sources and quantum memories, require operation in the visible wavelength range. These requirements make the passive optical properties of CMOS-fabricated, ultralow-loss, low-confinement silicon nitride waveguides especially attractive. However, the conventional active properties of these systems based on thermo-optic modulation are plagued by high levels of crosstalk, slow modulation rates, and high power dissipation. Although there have been recent demonstrations of CMOS-fabricated, visible wavelength, piezo-optomechanical PICs that solve the above challenges associated with implementing active functionality, these have made use of high-confinement waveguides with currently demonstrated losses of order $0.3$-$1~\mathrm{dB/cm}$, precluding circuit depths required for scalable quantum algorithms. Here, we demonstrate that combining piezo-optomechanical actuation with a low-confinement, ultra-low loss silicon nitride platform addresses the scalability challenge while enabling high-performance active functionality at visible wavelengths. This platform achieves a propagation loss $0.026~\mathrm{dB/cm}$ at $780~\mathrm{nm}$, modulation bandwidths in the MHz range, and a phase shifter voltage-length product ($V_πL$) of approximately $2.8~\mathrm{\mathrm{V}\cdot\mathrm{m}}$ and negligible hysteresis. We further demonstrate reconfigurable Mach-Zehnder interferometers based on spiral phase shifters with 0.63 dB loss per phase shifter.

Related papers

• 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)
• Dynamic control of dipole decay rate via graphene plexcitons [1.8925617030516928]
  We demonstrate dynamic modulation of dipole's decay rate by exploiting the tunable plexcitonic modes in the strong coupling regime.<n>The plexcitonic peaks shows much sharper linewidths in contrast to bare graphene plasmons even in the off-resonant coupling.<n>Our approach demonstrate a versatile platform for programmable emission control and offer a promising pathway for developing reconfigurable quantum photonic devices.
  arXiv  Detail & Related papers  (2025-10-22T09:15:49Z)
• Cavity-based optical switching via phase modulation in warm rubidium vapor [0.0]
  Optical switching remains a key outstanding challenge for scalable fault-tolerant photonic quantum computing.<n>We present a cavity-based optical switch that overcomes this limitation, demonstrating 22 ns rise time, insertion loss of 2.4 dB, and 17.5 dB extinction ratio.<n>The ultimate performance of our switch, combining both speed and efficiency, will find applications in active multiplexing, loop-based quantum memory, and feedforward for quantum error-correction protocols.
  arXiv  Detail & Related papers  (2025-08-08T12:21:27Z)
• Electro-mechanically tunable, waveguide-coupled photonic-crystal cavities with embedded quantum dots [0.0]
  We present a fully tunable system based on a 1D photonic-crystal cavity with an embedded quantum dot.<n>A micro-electromechanical cantilever is used to tune the cavity mode wavelength.<n>A quantum dot is tuned into resonance with the cavity mode, exhibiting an enhanced emission rate.
  arXiv  Detail & Related papers  (2025-03-12T15:37:02Z)
• Ultrafast terahertz superconductor van der Waals metamaterial photonic switch [0.0]
  High-temperature superconductor (HTS) BSCCO-based coherent terahertz (THz) sources have shown great potential as one of the leading solid-state platforms in THz science and technology. We report on the design, simulation and modelling of ultrafast THz metamaterial photonic integrated circuits, on a few nanometers thick HTS BSCCO van der Waals (vdWs)
  arXiv  Detail & Related papers  (2023-12-24T15:37:03Z)
• All-optical modulation with single-photons using electron avalanche [66.27103948750306]
  We demonstrate all-optical modulation enabled by electron avalanche process in silicon.<n>Our approach opens the possibility of gigahertz-speed, and potentially even faster, optical switching at the single-photon level.
  arXiv  Detail & Related papers  (2023-12-18T20:14:15Z)
• 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)
• Picosecond Pulsed Squeezing in Thin-Film Lithium Niobate Strip-Loaded Waveguides at Telecommunication Wavelengths [52.77024349608834]
  We show quadrature squeezing of picosecond pulses in a thin-film lithium niobate strip-loaded waveguide. This work highlights the potential of the strip-loaded waveguide platform for broadband squeezing applications.
  arXiv  Detail & Related papers  (2022-04-12T10:42:19Z)
• Topologically Protecting Squeezed Light on a Photonic Chip [58.71663911863411]
  Integrated photonics offers an elegant way to increase the nonlinearity by confining light strictly inside the waveguide. We experimentally demonstrate the topologically protected nonlinear process of spontaneous four-wave mixing enabling the generation of squeezed light on a silica chip.
  arXiv  Detail & Related papers  (2021-06-14T13:39:46Z)
• Single-photon detection and cryogenic reconfigurability in Lithium Niobate nanophotonic circuits [0.13854111346209866]
  Lithium-Niobate-On-Insulator (LNOI) is emerging as a promising platform for integrated quantum photonic technologies. Our results provide blueprints for implementing complex quantum photonic devices on the LNOI platform.
  arXiv  Detail & Related papers  (2021-03-19T18:13:52Z)

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.