New photon detector for device analysis: Superconducting single-photon detector based on a hot electron effect

Somani, Seema; Kasapi, Steven; Wilsher, K.; Lo, Wai Hung; Sobolewski, Roman; Gol’tsman, G.

doi:10.1116/1.1412899

Cited by 49 publications

(31 citation statements)

References 4 publications

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“…High counting-rate detectors capable of sensing single photons in the infrared region are needed for several applications in different fields; among them there are highbandwidth interplanetary communications, 1 test of highspeed semiconductor circuits, 2 and quantum key distribution. 3 Superconducting single photon detectors ͑SSPDs͒ are nanoscale photonic devices that can fulfill these requirements.…”

Section: Introductionmentioning

confidence: 99%

Electrical characterization of superconducting single-photon detectors

Mattioli

Leoni

Gaggero

et al. 2007

Journal of Applied Physics

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Superconducting meanders of NbN thin films have applications as single-photon detectors with high sensitivity in the infrared region. We report here a detailed analysis of the electrical characteristics of such meanders, by studying structures where each wire of the meander is separately contacted. The effect of heating on the superconducting-normal transition of adjacent stripes is evidenced. Moreover, the analysis of the switching current distribution of each wire highlights the high-critical current uniformity achieved by our meander process.

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Section: Introductionmentioning

confidence: 99%

Electrical characterization of superconducting single-photon detectors

Mattioli

Leoni

Gaggero

et al. 2007

Journal of Applied Physics

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“…The first practical application of these detectors was for non-invasive testing and debugging of CMOS integrated circuits [13,14], while recently, they were implemented for fast lifetime measurements of quantum well structures emitting IR radiation [15], and for determination of spontaneous emission lifetimes of InAs quantum dot single photon sources [3]. Our SSPDs are also very attractive for QC protocols due to low dark counts, in combination with the fast recovery time, and hence, high maximal counting rate [16].…”

Section: Introductionmentioning

confidence: 99%

Fiber-coupled NbN superconducting single-photon detectors for quantum correlation measurements

et al. 2007

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We have fabricated fiber-coupled superconducting single-photon detectors (SSPDs), designed for quantum-correlationtype experiments. The SSPDs are nanostructured (~100-nm wide and 4-nm thick) NbN superconducting meandering stripes, operated in the 2 to 4.2 K temperature range, and known for ultrafast and efficient detection of visible to nearinfrared photons with almost negligible dark counts. Our latest devices are pigtailed structures with coupling between the SSPD structure and a single-mode optical fiber achieved using a micromechanical photoresist ring placed directly over the meander. The above arrangement withstands repetitive thermal cycling between liquid helium and room temperature, and we can reach the coupling efficiency of up to ~33%. The system quantum efficiency, measured as the ratio of the photons counted by SSPD to the total number of photons coupled into the fiber, in our early devices was found to be around 0.3 % and 1% for 1.55 µm and 0.9 µm photon wavelengths, respectively. The photon counting rate exceeded 250 MHz. The receiver with two SSPDs, each individually biased, was placed inside a transport, 60-liter liquid helium Dewar, assuring uninterrupted operation for over 2 months. Since the receiver's optical and electrical connections are at room temperature, the set-up is suitable for any applications, where single-photon counting capability and fast count rates are desired. In our case, it was implemented for photon correlation experiments. The receiver response time, measured as a second-order photon cross-correlation function, was found to be below 400 ps, with timing jitter of less than 40 ps.

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“…Existing technologies for photon counting [46][47][48][49][50][51][52][53][54][55][56][57][58][59] such as avalanche photodiodes, cryogenic devices, and quantum dots typically have scalability problems and cannot reliably distinguish high photon numbers, destroy the quantum state of light in the detection process, or do not work for optical photons. Here, we present a nondestructive number resolving photo detection scheme in the optical regime.…”

Section: Introductionmentioning

confidence: 99%

Quantum state engineering, purification, and number-resolved photon detection with high-finesse optical cavities

et al. 2010

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We propose and analyze a multi-functional setup consisting of high finesse optical cavities, beam splitters, and phase shifters. The basic scheme projects arbitrary photonic two-mode input states onto the subspace spanned by the product of Fock states |n |n with n = 0, 1, 2, . . .. This protocol does not only provide the possibility to conditionally generate highly entangled photon number states as resource for quantum information protocols but also allows one to test and hence purify this type of quantum states in a communication scenario, which is of great practical importance. The scheme is especially attractive as a generalization to many modes allows for distribution and purification of entanglement in networks. In an alternative working mode, the setup allows of quantum non demolition number resolved photodetection in the optical domain.

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New photon detector for device analysis: Superconducting single-photon detector based on a hot electron effect

Cited by 49 publications

References 4 publications

Electrical characterization of superconducting single-photon detectors

Electrical characterization of superconducting single-photon detectors

Fiber-coupled NbN superconducting single-photon detectors for quantum correlation measurements

Quantum state engineering, purification, and number-resolved photon detection with high-finesse optical cavities

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