Broadband Balanced Homodyne Detector for High-Rate (&gt;10 Gb/s) Vacuum-Noise Quantum Random Number Generation

Honz, Florian; Milovančev, Dinka; Vokić, Nemanja; Pacher, Christoph; Schrenk, Bernhard

doi:10.1109/ecoc52684.2021.9605899

Cited by 3 publications

(2 citation statements)

References 12 publications

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“…80 A 3 GHz bandwidth die-level balanced homodyne detector with a significant quantum-to-classical noise removal of 19.1 dB was obtained. 81 A customized integrated TIA constructed in a 100 nm GaAs pHEMT technology was utilized in this co-integrated balanced homodyne detector. 82 A hybrid packaging was employed to amalgamate an InGaAs homodyne detector, a high-bandwidth TIA, and a photonic integrated circuit optimized for vacuum state quantum random number generator (QRNG) implementation.…”

Section: Measuring Squeezed Lightmentioning

confidence: 99%

Silicon photonics interfaced with microelectronics for integrated photonic quantum technologies: a new era in advanced quantum computers and quantum communications?

et al. 2023

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Section: Measuring Squeezed Lightmentioning

confidence: 99%

Silicon photonics interfaced with microelectronics for integrated photonic quantum technologies: a new era in advanced quantum computers and quantum communications?

et al. 2023

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“…Instead of a dedicated custom PIC and custom electrical integrated circuit (IC) designs, we are exploring the potential of existing commercially available chip-level components for both photonic as well as electronic elements, thus minimizing the parasitics and achieving low-noise operation. This paper is the extension of our initial works [15,16] and covers the performance characterization of different designs of die-level photodiode / transimpedance amplifier (TIA) assemblies in search for optimum design trade-offs for BHDs in view of quantum applications.…”

Section: Chip-level Ghzmentioning

confidence: 99%

Chip-Level GHz Capable Balanced Quantum Homodyne Receivers

Milovančev

Honz

Vokić

et al. 2022

J. Lightwave Technol.

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We present a design of balanced homodyne receivers suitable for ultra-low noise quantum applications such as continuous-variable quantum key distribution and quantum random number generation. For best noise and bandwidth performance a die-level low-parasitic photodiode together with a low-noise high-speed transimpedance amplifier are explored together with a planar lightwave circuit splitter chip serving as a photomixer. Bandwidths of 750 MHz and 2.6 GHz were accomplished while maintaining optimum noise performance, as evidenced by very high quantum-to-classical noise ratios of 26.8 and 18.6 dB, respectively. A common-mode rejection ratio of at least 40 dB was achieved for a frequency range of up to 1 GHz. Its application for continuous-variable quantum key distribution was evaluated by means of estimations under a strict untrusted receiver assumption, showing its potential for generating up to 43 Mbit/s secure-key rate over a reach of 10 km, whereas up to 100 Mbit/s could be supported at shorter reaches. Moreover, the high quantum-to-classical clearance values can enable high quality quantum random number generation at Gb/s rates. The multipurpose operation of the designed balanced receivers for classical communications was examined showing reception sensitivities of -55.8 and -52.6 dBm at 500 Mbit/s and 1 Gbit/s quadrature phase shift keying transmission, respectively, using the 750 MHz receiver. The faster 2.6 GHz receiver enabled 10 Gbit/s duobinary transmission at -14.8 dBm sensitivity.

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Research on large-bandwidth balanced homodyne detector for quantum detection

su,

Zhou,

Wang

et al. 2024

2024 International Conference on Optoelectronic Information and Optical Engineering (OIOE 2024)

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We study a relatively excellent BHD(Balanced Homodyne Detector)with large bandwidth and low noise pre-amplification, which is different from the specific BHD implementation scheme and can better adapt to the subsequent cascade scheme, thereby achieving the implementation of BHD with specific needs. Specifically, we optimize our BHD performance by compromising various parameters of BHD, focusing on optimizing and increasing BHD bandwidth, and choosing a more reasonable BHD implementation solution. Judging from the test results, the produced BHD has good performance in extracting effective signals. The bandwidth reaches about 2GHz, which meets the requirements of detection applications. It has a high signal-to-noise ratio of 10 dB and a common-mode rejection ratio (CMRR) of 20 dB near the 2 GHz frequency point.

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Broadband Balanced Homodyne Detector for High-Rate (>10 Gb/s) Vacuum-Noise Quantum Random Number Generation

Cited by 3 publications

References 12 publications

Silicon photonics interfaced with microelectronics for integrated photonic quantum technologies: a new era in advanced quantum computers and quantum communications?

Silicon photonics interfaced with microelectronics for integrated photonic quantum technologies: a new era in advanced quantum computers and quantum communications?

Chip-Level GHz Capable Balanced Quantum Homodyne Receivers

Research on large-bandwidth balanced homodyne detector for quantum detection

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