Number‐Resolved Single‐Photon Detection with Ultralow Noise van der Waals Hybrid

Roy, Kallol; Ahmed, Tanweer; Dubey, Harshit; Sai, T. Phanindra; Kashid, Ranjit V.; Maliakal, Shruti; Hsieh, Kimberly; Shamim, Saquib; Ghosh, Arindam

doi:10.1002/adma.201704412

Cited by 39 publications

(42 citation statements)

References 33 publications

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“…This corresponds to a detectivity of

assuming a

active area. Currently, such performance has been approached in graphene-based detectors operating at low temperature (T ∼ 100 K) [ 101 ]. Atomically-thin single-photon detectors, operating at room temperature, will allow a much faster integration into electronics and computation systems.…”

Section: Discussionmentioning

confidence: 99%

“…Using this structure, the authors demonstrated a multilevel optoelectronic memory using light and gate pulses to write and erase each bit, respectively ( Figure 7 b). In a follow up work, they replaced monolayer graphene with bilayer and, by dual gating, they electrostatically opened a band gap of ∼

[ 101 ], which resulted in a reduction in the channel noise by 6 to 8 orders of magnitude. This allowed them to demonstrate a number-resolved photo counter capable of determining the Poissonian emission statistic of an LED ( Figure 7 c).…”

Section: Hybrid and Heterostructure Photodetectorsmentioning

confidence: 99%

/graphene photodetector. Optical image highlights transparency (inset).…”

Section: Figurementioning

confidence: 99%

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Graphene-Based Light Sensing: Fabrication, Characterisation, Physical Properties and Performance

et al. 2018

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Graphene and graphene-based materials exhibit exceptional optical and electrical properties with great promise for novel applications in light detection. However, several challenges prevent the full exploitation of these properties in commercial devices. Such challenges include the limited linear dynamic range (LDR) of graphene-based photodetectors, the lack of efficient generation and extraction of photoexcited charges, the smearing of photoactive junctions due to hot-carriers effects, large-scale fabrication and ultimately the environmental stability of the constituent materials. In order to overcome the aforementioned limits, different approaches to tune the properties of graphene have been explored. A new class of graphene-based devices has emerged where chemical functionalisation, hybridisation with light-sensitising materials and the formation of heterostructures with other 2D materials have led to improved performance, stability or versatility. For example, intercalation of graphene with FeCl3 is highly stable in ambient conditions and can be used to define photo-active junctions characterized by an unprecedented LDR while graphene oxide (GO) is a very scalable and versatile material which supports the photodetection from UV to THz frequencies. Nanoparticles and quantum dots have been used to enhance the absorption of pristine graphene and to enable high gain thanks to the photogating effect. In the same way, hybrid detectors made from stacked sequences of graphene and layered transition-metal dichalcogenides enabled a class of devices with high gain and responsivity. In this work, we will review the performance and advances in functionalised graphene and hybrid photodetectors, with particular focus on the physical mechanisms governing the photoresponse, the performance and possible future paths of investigation.

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“…This corresponds to a detectivity of

assuming a

Section: Discussionmentioning

confidence: 99%

Section: Hybrid and Heterostructure Photodetectorsmentioning

confidence: 99%

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Graphene-Based Light Sensing: Fabrication, Characterisation, Physical Properties and Performance

et al. 2018

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“…The above result, i.e., effective temperature increasing with increasing photon energy, is promising for microwave photon detection. Indeed, with further optimization of microwave coupling structure, for example through utilization of a meander line 25 , quarter wave resonator 4 , or log periodic antennas 26 , measurements can be done at much lower microwave power level, which may provide more support for single photon detection with number resolving 9 , 27 capability. Compared to other superconducting photon detectors, such as transition edge sensors (TESs), the photon detection in this device is done by the zero-bias resistance, thus avoiding a large source-drain current needed, for example, in a TES structure 28 .…”

Section: Resultsmentioning

confidence: 99%

Microwave response in a topological superconducting quantum interference device

Pan

Soh

et al. 2021

Sci Rep

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Photon detection at microwave frequency is of great interest due to its application in quantum computation information science and technology. Herein are results from studying microwave response in a topological superconducting quantum interference device (SQUID) realized in Dirac semimetal Cd3As2. The temperature dependence and microwave power dependence of the SQUID junction resistance are studied, from which we obtain an effective temperature at each microwave power level. It is observed the effective temperature increases with the microwave power. This observation of large microwave response may pave the way for single photon detection at the microwave frequency in topological quantum materials.

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“…In most quantum communication schemes [4][5][6][7][8][9], the expensive critical element is the photon detector, which largely determines the quantum signal utilization, signal to noise ratio, cost and reliability of the system, as well as its main functionality and complexity of maintenance during operation. Currently, to ensure high quantum communication (QC) devices performance, two main types of quantum detectors are widely used: single-photon avalanche detector (SPAD) [10,11] and high-efficiency superconducting single-photon detector (SSPD) [12][13][14][15][16]. Promising results for stable urban quantum networks and longdistance QCs have been recently obtained with SPAD and SSPD detectors.…”

Section: Intercity Quantum Networkmentioning

confidence: 99%