Biphoton transmission through non-unitary objects
arXiv:1611.10237 · doi:10.1088/2040-8986/aa6175
Abstract
Losses should be accounted for in a complete description of quantum imaging systems, and yet they are often treated as undesirable and largely neglected. In conventional quantum imaging, images are built up by coincidence detection of spatially entangled photon pairs (biphotons) transmitted through an object. However, as real objects are non-unitary (absorptive), part of the transmitted state contains only a single photon, which is overlooked in traditional coincidence measurements. The single photon part has a drastically different spatial distribution than the two-photon part. It contains information both about the object, and, remarkably, the spatial entanglement properties of the incident biphotons. We image the one- and two-photon parts of the transmitted state using an electron multiplying CCD array both as a traditional camera and as a massively parallel coincidence counting apparatus, and demonstrate agreement with theoretical predictions. This work may prove useful for photon number imaging and lead to techniques for entanglement characterization that do not require coincidence measurements.
7 pages, 5 figures
References in corpus (13)
- Heralded Generation of Ultrafast Single Photons in Pure Quantum States
- Imaging high-dimensional spatial entanglement with a camera
- Nonlinear interactions with an ultrahigh flux of broadband entangled photons
- Photon wave functions, wave-packet quantization of light, and coherence theory
- Theory of Two-Photon Interactions with Broadband Down-Converted Light and Entangled Photons
- Introduction to the Transverse Spatial Correlations in Spontaneous Parametric Down-Conversion through the Biphoton Birth Zone
- Einstein-Podolsky-Rosen paradox in twin images
- Realization of the purely spatial Einstein-Podolsky-Rosen paradox in full-field images of spontaneous parametric down conversion
- Continuous variable quantum computation with spatial degrees of freedom of photons
- Multi-imaging and Bayesian estimation for photon counting with EMCCD's
- Coherent absorption of N00N states
- Quantifying the Momentum Correlation between Two Light Beams by Detecting One
- Optimising the signal-to-noise ratio in measurement of photon pairs with detector arrays
Cited by in corpus (7)
- Imaging with quantum states of light
- Pixel super-resolution using spatially-entangled photon pairs
- Spatially-entangled Photon-pairs Generation Using Partial Spatially Coherent Pump Beam
- Quality of Spatial Entanglement Propagation
- Quantum holography with biphotons of high dimensionality
- Optimizing the signal-to-noise ratio of biphoton distribution measurements
- Anisotropic Spatial Entanglement