Quantum noise correlations of an optical parametric oscillator based on a non-degenerate four wave mixing process in hot alkali atoms

• URL: http://arxiv.org/abs/2004.01590v1
• Date: Fri, 3 Apr 2020 14:29:49 GMT
• Title: Quantum noise correlations of an optical parametric oscillator based on a non-degenerate four wave mixing process in hot alkali atoms
• Authors: A. Monta\~na Guerrero, P. Nussenzveig, M. Martinelli, A. M. Marino, H. M. Florez
• Abstract summary: This measurement is based on parametric amplification by non degenerate four wave mixing with rubidium $85$Rb. We demonstrate a maximum intensity difference squeezing of -2.7 dB with a pump power of 285 mW and an output power of 12 mW for each beam. The operation close to the atomic resonances of alkali atoms allows a natural integration into quantum networks.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present the first measurement of two-mode squeezing between the twin beams produced by a doubly resonant optical parameter oscillator (OPO) in above threshold operation, based on parametric amplification by non degenerate four wave mixing with rubidium $^{85}$Rb. We demonstrate a maximum intensity difference squeezing of -2.7 dB (-3,5 dB corrected for losses) with a pump power of 285 mW and an output power of 12 mW for each beam, operating close to the D1 line of Rb atoms. The possibility to use open cavities combined with the high gain media can provide a strong level of noise compression, and the access to new operation regimes that could not be explored by crystal based OPOs. The spectral bandwidth of the squeezed light is broadened by the cavity dynamics, and the squeezing level is robust for strong pump powers. Stable operation was obtained up to four times above the threshold. Moreover, its operation close to the atomic resonances of alkali atoms allows a natural integration into quantum networks including structures such as quantum memories.

Related papers

• Squeezed dual-comb spectroscopy [32.73124984242397]
  Squeezing the distribution of quantum noise to enhance measurement precision of either the amplitude or phase quadrature of an optical field leads to significant measurement improvements with continuous wave lasers. Interferometry with a second coherent state frequency comb yields mode-resolved spectroscopy of hydrogen sulfide gas with a signal-to-noise ratio nearly 3 dB beyond the shot noise limit. The quantum noise reduction leads to a two-fold quantum speedup in the determination of gas concentration, with impact for fast, broadband, and high SNR ratio measurements of multiple species in dynamic chemical environments.
  arXiv  Detail & Related papers  (2024-08-29T16:36:23Z)
• Site-Controlled Purcell-Induced Bright Single Photon Emitters in Hexagonal Boron Nitride [62.170141783047974]
  Single photon emitters hosted in hexagonal boron nitride (hBN) are essential building blocks for quantum photonic technologies that operate at room temperature. We experimentally demonstrate large-area arrays of plasmonic nanoresonators for Purcell-induced site-controlled SPEs. Our results offer arrays of bright, heterogeneously integrated quantum light sources, paving the way for robust and scalable quantum information systems.
  arXiv  Detail & Related papers  (2024-05-03T23:02:30Z)
• 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)
• Ultrabright and narrowband intra-fiber biphoton source at ultralow pump power [51.961447341691]
  Nonclassical photon sources of high brightness are key components of quantum communication technologies. We here demonstrate the generation of narrowband, nonclassical photon pairs by employing spontaneous four-wave mixing in an optically-dense ensemble of cold atoms within a hollow-core fiber.
  arXiv  Detail & Related papers  (2022-08-10T09:04:15Z)
• Large Single-Phonon Optomechanical Coupling between Quantum Dots and Tightly Confined Surface Acoustic Waves in the Quantum Regime [1.7039969990048311]
  Small acoustic cavities with large zero-point motion are required for high efficiencies. We experimentally establish the feasibility of this platform through electro- and opto-mechanical characterization. We show conversion between microwave phonons and optical photons with sub-natural linewidths.
  arXiv  Detail & Related papers  (2022-05-03T02:53:01Z)
• 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)
• Continuous Variable Entanglement in an Optical Parametric Oscillator Based on a Nondegenerate Four Wave Mixing Process in Hot Alkali Atoms [0.0]
  This is the first measurement of entanglement in an OPO with media above threshold. We show a robust generation of entanglement with stronger generation for a specific pair of modes. The generation of entangled fields by an atomic OPO close to atomic resonance of alkali atoms enables natural integration into quantum networks.
  arXiv  Detail & Related papers  (2022-04-06T16:20:53Z)
• Degenerate squeezing in a dual-pumped integrated microresonator: parasitic processes and their suppression [0.0]
  We theoretically study the generation of degenerate quadrature squeezing in a dual-pumped integrated microring resonator coupled to a waveguide. Considering a dual-pump four-wave mixing configuration in an integrated $textSi_3textN_4$ platform, we investigate the effects of parasitic quantum nonlinear optical processes on the generation of squeezed light.
  arXiv  Detail & Related papers  (2021-09-07T19:17:36Z)
• Hot-spots and gain enhancement in a doubly pumped parametric down-conversion process [62.997667081978825]
  We experimentally investigate the parametric down-conversion process in a nonlinear bulk crystal, driven by two non-collinear pump modes. The experiment shows the emergence of bright hot-spots in modes shared by the two pumps, in analogy with the phenomenology recently observed in 2D nonlinear photonic crystals.
  arXiv  Detail & Related papers  (2020-07-24T09:39:03Z)
• Tunable quantum photonics platform based on fiber-cavity enhanced single photon emission from two-dimensional hBN [52.915502553459724]
  In this work we present a hybrid system consisting of defect centers in few-layer hBN grown by chemical vapor deposition and a fiber-based Fabry-Perot cavity. We achieve very large cavity-assisted signal enhancement up to 50-fold and equally strong linewidth narrowing owing to cavity funneling. Our work marks an important milestone for the deployment of 2D materials coupled to fiber-based cavities in practical quantum technologies.
  arXiv  Detail & Related papers  (2020-06-23T14:20:46Z)
• Off-axis optical vortices using double-Raman singlet and doublet light-matter schemes [0.0]
  We study the formation of off-axis optical vortices propagating inside a double-Raman gain atomic medium. The atoms interact with two weak probe fields as well as two strong pump beams which can carry orbital angular momentum (OAM)
  arXiv  Detail & Related papers  (2020-02-02T22:37:47Z)

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.