Cryogenic Electro-Optic Polarisation Conversion in Titanium in-diffused Lithium Niobate Waveguides

• URL: http://arxiv.org/abs/2006.12078v1
• Date: Mon, 22 Jun 2020 08:52:36 GMT
• Title: Cryogenic Electro-Optic Polarisation Conversion in Titanium in-diffused Lithium Niobate Waveguides
• Abstract summary: We demonstrate an electro-optic polarisation converter for 1550nm light at 0.8K in titanium in-diffused lithium niobate waveguides. This enables the combination of cryogenic photonics and active components on a single integration platform.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Many technologies in quantum photonics require cryogenic conditions to operate. However, the underlying platform behind active components such as switches, modulators and phase shifters must be compatible with these operating conditions. To address this, we demonstrate an electro-optic polarisation converter for 1550nm light at 0.8K in titanium in-diffused lithium niobate waveguides. To do so, we exploit the electro-optic properties of lithium niobate to convert between orthogonal polarisation modes with a fiber-to-fiber transmission >43%. We achieve a modulation depth of 23.6 +/-3.3dB and a conversion voltage-length product of 28.8 V cm. This enables the combination of cryogenic photonics and active components on a single integration platform.

Related papers

• Widely non-degenerate nonlinear frequency conversion in cryogenic titanium in-diffused lithium niobate waveguides [0.0]
  The titanium in-diffused lithium niobate waveguide platform is well-established for reliable prototyping and packaging of many quantum photonic components at room temperature.<n>We characterize alterations in phase-matching and mode guiding of a non-degenerate spontaneous parametric down-electricity process emitting around 1556 nm and 950 nm, under cryogenic conditions.
  arXiv  Detail & Related papers  (2025-09-02T14:57:18Z)
• Generation of photon pairs through spontaneous four-wave mixing in subwavelength nonlinear films [67.410870290301]
  We investigate photon pair generation through spontaneous four-wave mixing (SFWM) in subwavelength films of amorphous silicon nitride (SiN) with varying nitrogen content.<n>By observing two-photon interference between SFWM from the SiN films and the fused silica substrate, we find the third-order susceptibilities of films with different nitrogen content.
  arXiv  Detail & Related papers  (2025-02-03T12:30:06Z)
• Wavelength-Tunable and High-Heralding-Efficiency Quantum Photon Source in Birefringent Phase-Matched Lithium Niobate Waveguide [0.0]
  Lithium niobate(LN) is a birefringent material, where the strong birefringence thermo-optic effect is promising for the generation of quantum photon source. We demonstrate birefringent phase-matching in a 20-mm-long waveguide fabricated on 5$mu$m-thick x-cut lithium niobate on insulator.
  arXiv  Detail & Related papers  (2024-12-16T01:58:39Z)
• Efficient photon-pair generation in layer-poled lithium niobate nanophotonic waveguides [10.571773636879247]
  Thin-film lithium niobate is a promising platform for on-chip photon-pair generation. We introduce a layer-poled lithium niobate (LPLN) nanophotonic waveguide for efficient photon-pair generation. We demonstrate photon-pair generation with a normalized brightness of 3.1*106 Hz nm-1 mW-2 in a 3.3 mm long LPLN waveguide.
  arXiv  Detail & Related papers  (2024-05-17T17:57:26Z)
• 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)
• All-optical modulation with single-photons using electron avalanche [69.65384453064829]
  We demonstrate all-optical modulation using a beam with single-photon intensity. Our approach opens up the possibility of terahertz-speed optical switching at the single-photon level.
  arXiv  Detail & Related papers  (2023-12-18T20:14:15Z)
• Harnessing Brillouin Interaction in Rare-earth Aluminosilicate Glass Microwires for Optoelectromechanic Quantum Transduction [1.9551668880584971]
  We propose the use of Brillouin interactions in a fiber mode that is allowed to be passed through a fiber taper in rare-earth aluminium microwires. It suggests that we can efficiently convert a $195.57$ THz optical signal to a $325.08$ MHz microwave signal with the help of Brillouin interactions.
  arXiv  Detail & Related papers  (2022-10-03T15:57:11Z)
• 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)
• Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides [0.0]
  Lithium niobate is a promising platform for integrated quantum optics. We aim to efficiently manipulate and detect quantum states by combining superconducting single photon detectors and modulators. We characterise a phase modulator, directional coupler, and polarisation converter at both ambient and cryogenic temperatures.
  arXiv  Detail & Related papers  (2022-02-01T10:09:51Z)
• On-chip single-photon subtraction by individual silicon vacancy centers in a laser-written diamond waveguide [48.7576911714538]
  Laser-written diamond photonics offers three-dimensional fabrication capabilities and large mode-field diameters matched to fiber optic technology. To realize large cooperativities, we combine excitation of single shallow-implanted silicon vacancy centers via large numerical aperture optics. We demonstrate single-emitter extinction measurements with a cooperativity of 0.153 and a beta factor of 13% yielding 15.3% as lower bound for the quantum efficiency of a single emitter.
  arXiv  Detail & Related papers  (2021-11-02T16:01:15Z)
• Temperature insensitive type II quasi-phasematched spontaneous parametric downconversion [62.997667081978825]
  The temperature dependence of the refractive indices of potassium titanyl phosphate (KTP) are shown to enable quasi-phasematched type II spontaneous parametric downconversion. We demonstrate the effect experimentally, observing temperature-insensitive degenerate emission at 1326nm, within the telecommunications O band. This result has practical applications in the development of entangled photon sources for resource-constrained environments.
  arXiv  Detail & Related papers  (2020-12-09T16:14:15Z)
• Understanding photoluminescence in semiconductor Bragg-reflection waveguides: Towards an integrated, GHz-rate telecom photon pair source [47.399953444625154]
  semiconductor integrated sources of photon pairs may operate at pump wavelengths much closer to the bandgap of the materials. We show that devices operating near the long wavelength end of the S-band or the short C-band require temporal filtering shorter than 1 ns. We predict that shifting the operating wavelengths to the L-band and making small adjustments in the material composition will reduce the amount of photoluminescence to negligible values.
  arXiv  Detail & Related papers  (2020-10-12T06:27:30Z)
• Cryogenic second harmonic generation in periodically-poled lithium niobate waveguides [0.0]
  We show the first second harmonic generation in a fiber-coupled lithium niobate waveguide at temperatures down to 4.4K. Our results establish lithium niobate as a versatile nonlinear photonic integration platform compatible with cryogenic quantum technologies.
  arXiv  Detail & Related papers  (2020-05-15T12:36:25Z)
• Integrating two-photon nonlinear spectroscopy of rubidium atoms with silicon photonics [0.0]
  integrated silicon photonic chip, composed of several sub-wavelength ridge waveguides, immersed in a micro-cell with rubidium vapor. We observe that the waveguide transmission spectrum gets modified when the photonic mode is coupled to rubidium atoms through its evanescent tail. This work paves the way towards a miniaturized, low-power, and integrated hybrid atomic-photonic system compatible with CMOS technologies.
  arXiv  Detail & Related papers  (2020-03-10T14:13:42Z)

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.