Abstract

A gating circuit for generating a voltage gating signal for controlling on/off operation of a photon detector, said photon detector having a superconducting sensing element for detecting photons and one input/output configured to both input the voltage gating signal to the superconducting sensing element and output a readout signal from said superconducting sensing element, said gating circuit comprising a signal generator for generating a first periodic signal, said gating circuit being characterised in that it further comprises a gate shaping circuit configured to shape the first periodic signal to obtain a periodic voltage gating signal having during each period a transient pulse followed by a plateau.

IPC Classes  ?

• G01J 1/44 - Electric circuits
• H10N 60/84 - Switching means for devices switchable between superconducting and normal states

Abstract

A photon detector system for detecting photons emitted from an optical fiber, the photon detector system comprising a receiving mechanism for receiving the optical fiber; a photon detector comprising a superconducting element and aligned with the receiving mechanism, the photon detector having an active area for detecting photons emitted from an end-face of the optical fiber received in the receiving mechanism and an urging mechanism for urging together the photon detector and the optical fiber.

IPC Classes  ?

• G02B 6/42 - Coupling light guides with opto-electronic elements
• G01J 1/02 - Photometry, e.g. photographic exposure meter Details
• G01J 1/04 - Optical or mechanical part
• G01J 1/44 - Electric circuits

Abstract

A superconducting electronic signal output circuit includes a signal source section configured to provide a voltage and/or current signal. The signal source section comprises a superconducting nanowire single photon detector, SNSPD, a switchable output section connected to the signal source section and having a first superconducting switch configured to selectably cause the signal to be output to an output of the superconducting electronic signal output circuit, and a switchable sink section connected to the signal source section and the switchable output section and having a second superconducting switch configured to selectably cause the signal to be directed to a reference potential.

IPC Classes  ?

• G01J 1/44 - Electric circuits

Abstract

Single-photon detector apparatus comprising a large core optical fiber with a core diameter larger than 8 µm, a small core optical fiber with a core diameter smaller or equal to 5 µm, a taper between the large core optical fiber and the small core optical fiber, a superconducting nanowire having a surface area configured to receive all photons emitted from the small core optical fiber and cost effective and high yield method for manufacturing such.

IPC Classes  ?

• H10N 60/84 - Switching means for devices switchable between superconducting and normal states
• G01J 1/04 - Optical or mechanical part
• G01J 1/44 - Electric circuits
• G02B 6/10 - Light guidesStructural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type

Abstract

A superconducting electronic signal output circuit comprising a signal source section (10) configured to provide a voltage and/or current signal (S), wherein the signal source section (10) comprises a superconducting nanowire single photon detector, SNSPD (11); a switchable output section (20) connected to the signal source section (10) and comprising a first superconducting switch (21) configured to selectably cause the signal (S) to be output to an output (O) of the superconducting electronic signal output circuit; and a switchable sink section (30) connected to the signal source section (10) and the switchable output section (20) and comprising a second superconducting switch (31) configured to selectably cause the signal to be directed to a reference potential (G).

IPC Classes  ?

• H10N 60/84 - Switching means for devices switchable between superconducting and normal states

Abstract

A photon detector system for detecting photons emitted from an optical fiber, the photon detector system comprising a receiving mechanism for receiving the optical fiber; a photon detector comprising a superconducting element and aligned with the receiving mechanism, the photon detector having an active area for detecting photons emitted from an end-face of the optical fiber received in the receiving mechanism and an urging mechanism for urging together the photon detector and the optical fiber.

IPC Classes  ?

• G02B 6/42 - Coupling light guides with opto-electronic elements

Abstract

Single-photon detector apparatus comprising a large core optical fiber with a core diameter larger than 8 µm, a small core optical fiber with a core diameter smaller or equal to 5 µm, a taper between the large core optical fiber and the small core optical fiber, a superconducting nanowire having a surface area configured to receive all photons emitted from the small core optical fiber and cost effective and high yield method for manufacturing such.

IPC Classes  ?

• G01J 1/04 - Optical or mechanical part
• G02B 6/28 - Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
• G02B 6/42 - Coupling light guides with opto-electronic elements
• G02B 6/255 - Splicing of light guides, e.g. by fusion or bonding
• G01J 1/44 - Electric circuits