Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Flórez, Jefferson"'
Autor:
Gemmell, Nathan R., Ma, Yue, Pearce, Emma, Florez, Jefferson, Czerwinski, Olaf, Kim, M. S., Oulton, Rupert F., Clark, Alex S., Phillips, Chris C.
The effect known as ``induced coherence without induced emission'' has spawned a field dedicated to imaging with undetected photons (IUP), where photons from two distinct photon-pair sources interfere if their outputs are made indistinguishable. The
Externí odkaz:
http://arxiv.org/abs/2311.13421
Autor:
Pearce, Emma, Gemmell, Nathan R., Flórez, Jefferson, Ding, Jiaye, Oulton, Rupert F., Clark, Alex S., Phillips, Chris C.
Infrared (IR) imaging is invaluable across many scientific disciplines, from material analysis to diagnostic medicine. However, applications are often limited by detector cost, resolution and sensitivity, noise caused by the thermal IR background, an
Externí odkaz:
http://arxiv.org/abs/2307.06225
Autor:
Flórez, Jefferson, Pearce, Emma, Gemmell, Nathan R., Ma, Yue, Bressanini, Gabriele, Phillips, Chris C., Oulton, Rupert F., Clark, Alex S.
We analyse a nonlinear interferometer, also known as an SU(1,1) interferometer, in the presence of internal losses and inefficient detectors. To overcome these limitations, we consider the effect of seeding one of the interferometer input modes with
Externí odkaz:
http://arxiv.org/abs/2209.06749
Autor:
Gemmell, Nathan R., Florez, Jefferson, Pearce, Emma, Czerwinski, Olaf, Phillips, Chris C., Oulton, Rupert F., Clark, Alex S.
Sensing with undetected photons enables the measurement of absorption and phase shifts at wavelengths different from those detected. Here, we experimentally map the balance and loss parameter space in a non-degenerate nonlinear interferometer, showin
Externí odkaz:
http://arxiv.org/abs/2205.08832
We report the efficient generation of high-gain parametric down-conversion, including pump depletion, with pump powers as low as 100 $\mu$W (energies $0.1$~$\mu$J/pulse) and conversion efficiencies up to 33\%. In our simple configuration, the pump be
Externí odkaz:
http://arxiv.org/abs/2003.07483
Publikováno v:
Phys. Rev. A 98, 053862 (2018)
We present the experimental control of Non-Markovian dynamics of open quantum systems simulated with photonic entities. The polarization of light is used as the system, whereas the surrounding environment is represented by light's spatial structure.
Externí odkaz:
http://arxiv.org/abs/1809.00780
Autor:
Flórez, Jefferson, Giese, Enno, Curic, Davor, Giner, Lambert, Boyd, Robert W., Lundeen, Jeff S.
Publikováno v:
New Journal of Physics, Volume 20, Number 12, Page 123022, 2018
We study a nonlinear interferometer consisting of two consecutive parametric amplifiers, where all three optical fields (pump, signal and idler) are treated quantum mechanically, allowing for pump depletion and other quantum phenomena. The interactio
Externí odkaz:
http://arxiv.org/abs/1808.06136
Autor:
Curic, Davor, Richardson, Magdalena C., Thekkadath, Guillaume S., Flórez, Jefferson, Giner, Lambert, Lundeen, Jeff S.
Publikováno v:
Phys. Rev. A 97, 042128 (2018)
Unlike regular time evolution governed by the Schr\"odinger equation, standard quantum measurement appears to violate time-reversal symmetry. Measurement creates random disturbances (e.g., collapse) that prevents back-tracing the quantum state of the
Externí odkaz:
http://arxiv.org/abs/1801.04362
Publikováno v:
Review of Scientific Instruments 89 (2), 023108 (2018)
We present designs for variably polarizing beam splitters. These are beam splitters allowing the complete and independent control of the horizontal and vertical polarization splitting ratios. They have quantum optics and quantum information applicati
Externí odkaz:
http://arxiv.org/abs/1709.05209
In this work, we present a theoretical and experimental study about the spatial correlations of paired photons generated by type-II spontaneous parametric down-conversion. In particular, we show how these correlations can be positive or negative depe
Externí odkaz:
http://arxiv.org/abs/1512.05205