Imaging of single infrared, optical, and ultraviolet photons using distributed tunnel junction readout on superconducting absorbers

Furlan, Miha; Kirk, E.; Zehnder, A.

doi:10.1063/1.2709860

Cited by 7 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These two junctions could perhaps be the two junctions in a distributed-readouttype of detector. 11 The power dissipation by the biasing junction, for example, junction B in configuration I, is of order P = IV ϳ 1 W. Most cryogenic systems have a cooling power of order 10-100 W, so this is not necessarily a big problem as far as heat is dissipated in the bath. The heat from the biasing junction could locally heat up one of the other two junctions, although it appears that this did not happen in our measurements.…”

Section: Discussionmentioning

confidence: 99%

Subgap biasing of superconducting tunnel junctions without a magnetic field

Segall

Moyer

Mazo

2008

Journal of Applied Physics

View full text Add to dashboard Cite

Superconducting tunnel junctions (STJs) have been successfully used as single-photon detectors but require the use of a magnetic field to operate. A recent paper has proposed the idea to use a circuit of three junctions in place of a single junction in order to achieve the necessary biasing without applying a magnetic field. The nonlinear interaction between the different junctions in the circuit causes the existence of a stable subgap state for one of the junctions, which acts as the detector junction. In this paper, we present the first measurements demonstrating the existence of such a biasing state feasible for STJ detectors. Single junction measurements with an applied magnetic field help determine the functional form of the subgap current versus voltage; then the operating point of a three-junction circuit is measured and fit to theory. The excellent match between theory and experiment demonstrates the existence of the subgap biasing state. The outlook for possible use in detector applications is discussed.

show abstract

Section: Discussionmentioning

confidence: 99%

Subgap biasing of superconducting tunnel junctions without a magnetic field

Segall

Moyer

Mazo

2008

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…Superconducting tunnel junction (STJ) detectors have been used for X-ray to near infrared photon counting detectors [11]. Although photon counting capabilities in terahertz frequencies were not demonstrated, low leakage junctions can be used to measure fast changing photo currents [12,13].…”

Section: Requirements On Detectorsmentioning

confidence: 99%

Requirements on Photon Counting Detectors for Terahertz Interferometry

Matsuo

2012

J Low Temp Phys

View full text Add to dashboard Cite

Future Terahertz astronomy requires higher angular resolution observations. One possibility is to use photon counting interferometry, which is similar to the intensity interferometry demonstrated by Hanbury Brown and Twiss in 1956. In terahertz frequencies, it will be possible to measure all the photon arrivals and can identify bunched photons from thermal sources to measure correlation amplitude and time delay of the photon arrivals. By obtaining the complex visibility, aperture synthesis images can be obtained. I name this technology as photon counting terahertz interferometry (PCTI). From scientific case study, requirements to the detectors are high photon counting rate and accurate time resolution. I discuss on requirements on possible detector technologies such as superconducting single photon detectors (SSPD), superconducting tunnel junction (STJ) detectors and charge sensitive infrared phototransistors (CSIP).

show abstract

“…The oscillator signal V out with relatively large amplitude V g is demodulated with conventional (phase-locked loop) electronics outside the cryostat. The measured response of the oscillator to a SINIS detector [4] Xray event is shown in Fig. 2.…”

mentioning

confidence: 99%

New frequency-modulation readout based on relaxation oscillations

Furlan

Kirk

Zehnder

2006

Nuclear Instruments and Methods in Physics Research Section A:

Self Cite

View full text Add to dashboard Cite

Scaling of multi-pixel cryogenic detectors for imaging becomes increasingly difficult with size due to complexity of readout circuitry and cryogenic constraints (thermal load from wiring). We propose and demonstrate a new readout scheme based on a highly stable RF oscillator composed of a superconducting tunnel junction which exhibits relaxation oscillations. The oscillation frequency is almost linear with the analog bias signal over a wide operation range. The frequency signals from different detectors can be combined into one single readout line. The current noise of an optimized circuit is about 5 pA/sqrt(Hz), which is comparable to standard SQUID amplifiers. We show experimental data from `stand-alone' operation as well as response to microcalorimeter X-ray signals.Comment: 3 pages, 2 figure

show abstract

Imaging of single infrared, optical, and ultraviolet photons using distributed tunnel junction readout on superconducting absorbers

Cited by 7 publications

References 33 publications

Subgap biasing of superconducting tunnel junctions without a magnetic field

Subgap biasing of superconducting tunnel junctions without a magnetic field

Requirements on Photon Counting Detectors for Terahertz Interferometry

New frequency-modulation readout based on relaxation oscillations

Contact Info

Product

Resources

About