Graduate Students

Name	Discipline/Position	Phone	Office	E-Mail	Home Page
Romach Yoav	Condensed Matter Physics	02 6584 811	Bergman Bldg.
Pollak Ori	Atomic, Molecular and Optical Physics	02 6585 129	Marks Bldg.
Pilnyak Yehuda	Atomic, Molecular and Optical Physics	02 6584 473	Marks Bldg.
Padnos Dan	Astrophysics and Relativity
Orbach Nir	Nonlinear	02 6586 718	Levin 14
Ohayon Ben	Nuclear Hadronic and Few-Body Physics	02 6585 868	Kaplun Bldg.
Nussbaum Tomer	Astrophysics and Relativity
Mintz Gad	Biophysics and Interdisciplinary Research	02 6586 753	Silberman 3-306
Metzker Lior	Biophysics and Interdisciplinary Research	02 6585 783	Popick Bldg.
Meirzada Idan

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Yesterday

Nanophotonics and Optics Seminar: "Interferometric Measurements using Photon Number Resolving Detector"
- Start time: 02:00pm
- End date: Tuesday, July 17th
- End time: 03:30pm
- Lecturer: Mr. Lior Cohen, Racah Institute of Physics, The Hebrew University of Jerusalem
  
  Abstract:
  
  One of the most common ways to sense and measure the physical world is by using light, and in particular by interferometric measurements. The Laser Interferometer Gravitational-Wave Observatory is an extreme example for that. Classically, these measurements are limited to Rayleigh-diffraction-limit resolution and shot-noise-limit (SNL) sensitivity. Using quantum mechanics, one can surpass these limits.
  
  In the main part of the talk, I will show a few interferometric experiments. The first experiment presents interferometric measurements showing sub-wavelength super-resolved features at the SNL. This is a result of measuring the parity of a weak coherent state, a measurement without a classical analog. The second experiment shows how SNL can be preserved in a noisy environment, using quantum error correction. The same scheme can preserve also the Heisenberg limit (i.e. sub-SNL). The last presented experiment constructs entangled coherent states which exhibit deterministically both super-resolution and Heisenberg limited sensitivity.
  
  Also, one main tool of those works, a photon number resolving detector, and its calibration, will be presented.
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