A Homodyne Detector Integrated onto a Photonic Chip for Measuring Quantum States and Generating Random Numbers

Francesco Raffaelli, Giacomo Ferranti, Dylan Mahler, Philip Sibson, Jake Kennard, Alberto Santamato, Gary Sinclair, Damien Bonneau, Jonathan Matthews, Mark G. Thompson

Research output: Contribution to journalArticle (Academic Journal)

37 Citations (Scopus)
301 Downloads (Pure)

Abstract

Optical homodyne detection has found use as a characterization tool in a range of quantum; technologies. So far implementations have been limited to bulk optics. Here we present the optical; integration of a homodyne detector onto a silicon photonics chip. The resulting device operates; at high speed, up 150 MHz, it is compact and it operates with low noise, quantified with 11 dB; clearance between shot noise and electronic noise. We perform on-chip quantum tomography of; coherent states with the detector and show that it meets the requirements for characterising more; general quantum states of light. We also show that the detector is able to produce quantum random; numbers at a rate of 1.2 Gbps generation rate, by measuring the vacuum state of the electromagnetic; field-the produced random numbers pass all the statistical tests provided by the NIST statistical; test suite.
Original languageEnglish
Article number025003
Number of pages9
JournalQuantum Science and Technology
Volume3
Issue number2
DOIs
Publication statusPublished - 7 Feb 2018

Structured keywords

  • QETLabs
  • Bristol Quantum Information Institute

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  • Projects

    Programme Grant: Engineering Photonic Quantum Technologies.

    Rarity, J. G., O'Brien, J. L., Thompson, M. G., Erven, C., Sahin, D., Marshall, G. D., Barreto, J., Jiang, P., Mccutcheon, W. D., Silverstone, J. W., Sinclair, G. F., Kling, L., Banerjee, A., Wang, J., Santagati, R., Borghi, M., Woodland, E. M., Mawdsley, H. C. M. & Faruque, I. I.

    16/06/1415/06/19

    Project: Research, Parent

    Datasets

    A Homodyne Detector Integrated onto a Photonic Chip for Measuring Quantum States and Generating Random Numbers

    Raffaelli, F. (Creator), Ferranti, G. (Creator), Mahler, D. (Creator), Sibson, P. (Creator), Kennard, J. (Creator), Santamato, A. (Creator), Sinclair, G. (Creator), Bonneau, D. (Creator), Thompson, M. G. (Creator), Matthews, J. C. F. (Creator) & Matthews, J. C. F. (Data Manager), University of Bristol, 5 Jan 2018

    Dataset

    Cite this

    Raffaelli, F., Ferranti, G., Mahler, D., Sibson, P., Kennard, J., Santamato, A., Sinclair, G., Bonneau, D., Matthews, J., & Thompson, M. G. (2018). A Homodyne Detector Integrated onto a Photonic Chip for Measuring Quantum States and Generating Random Numbers. Quantum Science and Technology, 3(2), [025003]. https://doi.org/10.1088/2058-9565/aaa38f