Measuring protein concentration with entangled photons

  title={Measuring protein concentration with entangled photons},
  author={A. Crespi and M. Lobino and J. Matthews and Alberto Politi and Chris R. Neal and R. Ramponi and R. Osellame and J. O'Brien},
  journal={Applied Physics Letters},
  • A. Crespi, M. Lobino, +5 authors J. O'Brien
  • Published 2012
  • Physics
  • Applied Physics Letters
  • Optical interferometry is amongst the most sensitive techniques for precision measurement. By increasing the light intensity, a more precise measurement can usually be made. However, if the sample is light sensitive entangled states can achieve the same precision with less exposure. This concept has been demonstrated in measurements of known optical components. Here, we use two-photon entangled states to measure the concentration of a blood protein in an aqueous buffer solution. We use an opto… CONTINUE READING
    82 Citations

    Figures from this paper.

    An entanglement-enhanced microscope.
    • 118
    • PDF
    Biological measurement beyond the quantum limit
    • M. A. Taylor, J. Janousek, +4 authors W. Bowen
    • Physics
    • 2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC
    • 2013
    • 202
    • PDF
    Biological measurement beyond the quantum limit
    • 68
    • PDF
    Quantum Optical Technologies for Metrology, Sensing, and Imaging
    • 67
    • PDF
    Quantum optical rotatory dispersion
    • 13
    • PDF
    Quantum noise in optical tweezers
    • 3


    Heralding two-photon and four-photon path entanglement on a chip.
    • 57
    • PDF
    Laser written waveguide photonic quantum circuits.
    • 244
    • PDF
    Time-reversal and super-resolving phase measurements.
    • 167
    • PDF
    Optimal quantum phase estimation.
    • 253
    • PDF