Heralded single photon source at 1550 nm from pulsed parametric down conversion
نویسندگان
چکیده
ALEXANDRE SOUJAEFF†*, SHIGEKI TAKEUCHI†, KEIJI SASAKI†, TOSHIO HASEGAWA‡, MITSURU MATSUI‡ †Japan Science and Technology Corporation-CREST Project; Research Institute for Electronic Science, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo 060-0812, Japan, Tel +81-11-706-2648, Fax +81-11-706-3693 ‡Mitsubishi Electric Corporation, Ofuna 5-1-1, Kamakura, 247-8501, Japan, TEL +81467-41-2561, FAX +81-467-41-2185
منابع مشابه
MHz rate and efficient synchronous heralding of single photons at telecom wavelengths.
We report on the realization of a synchronous source of heralded single photons at telecom wavelengths with MHz heralding rates and high heralding efficiency. This source is based on the generation of photon pairs at 810 and 1550 nm via Spontaneous Parametric Down Conversion (SPDC) in a 1 cm periodically poled lithium niobate (PPLN) crystal pumped by a 532 nm pulsed laser. As high rates are fun...
متن کاملSpatial and spectral mode selection of heralded single photons from pulsed parametric down-conversion.
We describe an experiment in which photon pairs from a pulsed parametric down-conversion (PDC) source were coupled into single-mode fibers with heralding efficiencies as high as 70%. Heralding efficiency or mode preparation efficiency is defined as the probability of finding a photon in a fiber in a definite state, given the detection of its twin. Heralding efficiencies were obtained for a rang...
متن کاملQuantum key distribution at 1550 nm using a pulse heralded single photon source.
Quantum key distribution with pulsed heralded single photon source was performed over 40 km of fiber for the first time to our knowledge. QBER was measured to be 4.23% suggesting security against unconditional attack.
متن کاملAn efficient integrated two-color source for heralded single photons
We present a pulsed and integrated, highly non-degenerate parametric down-conversion (PDC) source of heralded single photons at telecom wavelengths, paired with heralding photons around 800 nm. The active PDC section is combined with a passive, integrated wavelength division demultiplexer on-chip, which allows for the spatial separation of signal and idler photons with efficiencies of more than...
متن کاملHeralded, pure-state single-photon source based on a Potassium Titanyl Phosphate waveguide.
We analyze the generation of single spatial mode, spectrally uncorrelated photon pairs via type II spontaneous parametric down-conversion in a Potassium Titanyl Phosphate (KTP) waveguide using real experimental parameters. We show that this source can be used as an efficient, heralded, pure-state single-photon source.
متن کامل