Mixed state entanglement: Manipulating polarization-entangled photons
نویسندگان
چکیده
منابع مشابه
Manipulating Frequency Entangled Photons
A parametric down conversion source pumped by a monochromatic laser will produce frequency entangled photon pairs. We demonstrate this by an experiment in which five-dimensional frequency entanglement is manipulated at telecommunication wavelengths using commercially available components such as electro-optic phase modulators and narrowband frequency filters. A theoretical intuition for this ap...
متن کاملPreparation of polarization-entangled mixed states of two photons
Entanglement has played a crucial role for many applications of quantum information, such as quantum teleportation @1#, superdense coding @2#, quantum error correction @3#, etc. To function optimally these applications require maximal pure entanglement. However, unwanted coupling to the environment causes decoherence of quantum systems and yields mixed state entanglement. Therefore entanglement...
متن کاملBroadband source of polarization entangled photons.
A broadband source of polarization entangled photons based on type-II spontaneous parametric down conversion from a chirped PPKTP crystal is presented. With numerical simulation and experimental evaluation, we report a source of broadband polarization entangled states with a bandwidth of approximately 125 nm for use in quantum interferometry. The technique has the potential to become a basis fo...
متن کاملUltrabright source of polarization-entangled photons
Using the process of spontaneous parametric down-conversion in a two-crystal geometry, we have generated a source of polarization-entangled photon pairs that is more than ten times brighter, per unit of pump power, than previous sources, with another factor of 30 to 75 expected to be readily achievable. We have measured a high level of entanglement between photons emitted over a relatively larg...
متن کاملOptimizing type-I polarization-entangled photons.
Optical quantum information processing needs ultra-bright sources of entangled photons, especially from synchronizable femtosecond lasers and low-cost cw-diode lasers. Decoherence due to timing information and spatial mode-dependent phase has traditionally limited the brightness of such sources. We report on a variety of methods to optimize type-I polarization-entangled sources--the combined us...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review A
سال: 2001
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.64.022320