Low-noise quantum frequency conversion with cavity enhancement of converted mode

• URL: http://arxiv.org/abs/2409.05408v1
• Date: Mon, 9 Sep 2024 08:09:37 GMT
• Title: Low-noise quantum frequency conversion with cavity enhancement of converted mode
• Authors: Shoichi Murakami, Toshiki Kobayashi, Shigehito Miki, Hirotaka Terai, Tsuyoshi Kodama, Tsuneaki Sawaya, Akihiko Ohtomo, Hideki Shimoi, Takashi Yamamoto, Rikizo Ikuta,
• Abstract summary: Quantum frequency conversion (QFC) converts the frequencies of photons while preserving the quantum state. noise photons produced by the strong pump light used for QFC contaminate the frequency-converted photon, which degrades the quality of the quantum property of the photon after QFC. In this study, we implement a compact QFC device integrating the cavity structure only for the converted mode.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Quantum frequency conversion (QFC) which converts the frequencies of photons while preserving the quantum state is an essential technology for realizing the quantum internet and quantum interconnect. For the QFC based on the frequency downconversion from visible to the telecom wavelengths around 1500 nm, it is widely known that noise photons produced by the strong pump light used for QFC contaminate the frequency-converted photon, which degrades the quality of the quantum property of the photon after QFC. In conventional QFC experiments, noise photons are removed using external narrowband frequency filter systems. In contrast, in this study, we implement a compact QFC device integrating the cavity structure only for the converted mode. While the cavity structure can enhance not only the desired QFC efficiency but also the noise photon generation rate, we show that the cavity-enhanced QFC followed by a relatively wide bandpass filter achieves the signal-to-noise ratio comparable to the QFCs with external narrowband filters. We experimentally demonstrate the cavity-enhanced QFC using a single photon at 780 nm to 1540 nm, in which the non-classical photon statistics is clearly observed after QFC.

Related papers

• Purifying quantum-dot light in a coherent frequency interface [39.58317527488534]
  Quantum networks operate in the telecom wavelengths to take advantage of low-loss transmission in optical fibres. Bright quantum dots (QDs) emitting highly indistinguishable quantum states of light, such as InGaAs QDs, often emit photons in the near infrared. We report a method for simultaneously implementing spectral purification and frequency shifting of single photons from QD sources to the C-band in a periodically poled Lithium Niobate waveguide.
  arXiv  Detail & Related papers  (2024-07-11T18:02:43Z)
• Noise analysis of a quasi-phase-matched quantum frequency converter and higher-order counter-propagating SPDC [0.0]
  Quantum frequency conversion (QFC) will be an indispensable ingredient in future quantum technologies. Large-scale fibre-based quantum networks will require QFC to interconnect heterogeneous building blocks like emitters, channels, memories and detectors. The performance of existing QFC devices is often severely limited by parasitic noise that arises when the pump wavelength lies between the inter-converted wavelengths.
  arXiv  Detail & Related papers  (2024-07-04T11:27:57Z)
• High-dimensional time-frequency entanglement in a singly-filtered biphoton frequency comb [4.441222446978085]
  High-dimensional quantum entanglement is a cornerstone for advanced technology enabling large-scale noise-tolerant quantum systems. Recently developed biphoton frequency comb (BFC) provides a powerful platform for high-dimensional quantum information processing.
  arXiv  Detail & Related papers  (2023-09-11T05:02:13Z)
• Hyper-entanglement between pulse modes and frequency bins [101.18253437732933]
  Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols. We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
  arXiv  Detail & Related papers  (2023-04-24T15:43:08Z)
• Quantum frequency conversion and single-photon detection with lithium niobate nanophotonic chips [12.233074370900876]
  Lithium niobate on insulator (LNOI) platform has revolutionized lithium niobate materials. Quantum frequency conversion (QFC) photonic chips enable quantum state preservation during frequency tuning. In this work, we demonstrate a low-noise QFC process on an LNOI nanophotonic platform.
  arXiv  Detail & Related papers  (2022-09-18T06:30:26Z)
• 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)
• Frequency-bin entanglement from domain-engineered down-conversion [101.18253437732933]
  We present a single-pass source of discrete frequency-bin entanglement which does not use filtering or a resonant cavity. We use a domain-engineered nonlinear crystal to generate an eight-mode frequency-bin entangled source at telecommunication wavelengths.
  arXiv  Detail & Related papers  (2022-01-18T19:00:29Z)
• Telecom-band Hyperentangled Photon Pairs from a Fiber-based Source [49.06242674127539]
  We experimentally demonstrate the generation of telecom-band biphotons hyperentangled in both the polarization and frequency DoFs. The states produced by our hyperentanglement source can enable protocols such as dense coding and high-dimensional quantum key distribution.
  arXiv  Detail & Related papers  (2021-12-06T21:37:43Z)
• Quantum frequency conversion based on resonant four-wave mixing [4.664989082015337]
  In nonlinear optics, the wave mixing effect far away from the resonance condition is often used to realize Quantum frequency conversion (QFC) Here, we theoretically study another efficient QFC scheme based on a resonant four-wave mixing system. Our research demonstrates that if the conversion efficiency of the EIT-based QFC is close to 100%, the wave function and quadrature variance of the converted photon are almost the same as the input probe photon.
  arXiv  Detail & Related papers  (2020-09-23T09:42:52Z)
• Optical repumping of resonantly excited quantum emitters in hexagonal boron nitride [52.77024349608834]
  We present an optical co-excitation scheme which uses a weak non-resonant laser to reduce transitions to a dark state and amplify the photoluminescence from quantum emitters in hexagonal boron nitride (hBN) Our results are important for the deployment of atom-like defects in hBN as reliable building blocks for quantum photonic applications.
  arXiv  Detail & Related papers  (2020-09-11T10:15:22Z)
• Frequency-Domain Quantum Interference with Correlated Photons from an Integrated Microresonator [96.25398432840109]
  We report frequency-domain Hong-Ou-Mandel interference with spectrally distinct photons generated from a chip-based microresonator. Our work establishes four-wave mixing as a tool for selective high-fidelity two-photon operations in the frequency domain.
  arXiv  Detail & Related papers  (2020-03-14T01:48:39Z)

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.