Lock-in detection of single photons after two-step frequency conversion

2012 ◽  
Vol 37 (20) ◽  
pp. 4254 ◽  
Author(s):  
Andreas Lenhard ◽  
Sebastian Zaske ◽  
Christoph Becher
Keyword(s):  
Frequency Conversion ◽  
Single Photons ◽  
Step Frequency ◽  
Lock In

Design of Small Step Frequency Conversion Module in S Band

2012 ◽  
Vol 263-266 ◽  
pp. 152-156
Author(s):  
Yong Xie ◽  
Sheng Liang ◽  
Gao Feng Pan ◽  
Jun Xue
Keyword(s):  
Design Problem ◽  
Main Part ◽  
Frequency Conversion ◽  
Frequency Converter ◽  
Small Step ◽  
Step Frequency ◽  
Two Stage ◽  
Conversion Technology

The small step frequency conversion module is an important unit for a type of simulation equipment. This paper tries to design a kind of small step frequency conversion module which solves the design problem of frequency converter in simulation equipment. The study of small step frequency conversion technology is the main part in this paper. It is using two-stage PLL and DDS which sets frequency and controls step, to meet the design need.

scholarly journals Single-Photon Frequency Conversion for Quantum Interface

2020 ◽  
Author(s):  
Yuanhua Li ◽  
Xianfeng Chen
Keyword(s):  
Wavelength Division Multiplexing ◽  
Frequency Conversion ◽  
Single Photon ◽  
Entanglement Swapping ◽  
Great Promise ◽  
Single Photons ◽  
Quantum Communications ◽  
Wavelength Division ◽  
Photon Frequency ◽  
Quantum Interface

Single-photon frequency conversion for quantum interface plays an important role in quantum communications and networks, which is crucial for the realization of quantum memory, faithful entanglement swapping and quantum teleportation. In this chapter, we will present our recent experiments about single-photon frequency conversion based on quadratic nonlinear processes. Firstly, we demonstrated spectrum compression of broadband single photons at the telecom wavelength to the near-visible window, marking a critical step towards coherent photonic interface. Secondly, we demonstrated the nonlinear interaction between two chirped broadband single-photon-level coherent states, which may be utilized to achieve heralding entanglement at a distance. Finally, we theoretically introduced and experimentally demonstrated single-photon frequency conversion in the telecom band, enabling switching of single photons between dense wavelength-division multiplexing channels. Moreover, quantum entanglement between the photon pair is maintained after the frequency conversion. Our researches have realized three significant quantum interfaces via single-photon frequency conversion, which hold great promise for the development of quantum communications and networks.

scholarly journals Quantum frequency conversion of memory-compatible single photons from 606  nm to the telecom C-band

Optica ◽  
2018 ◽  
Vol 5 (5) ◽  
pp. 507 ◽  
Author(s):  
Nicolas Maring ◽  
Dario Lago-Rivera ◽  
Andreas Lenhard ◽  
Georg Heinze ◽  
Hugues de Riedmatten
Keyword(s):  
Frequency Conversion ◽  
Single Photons ◽  
Quantum Frequency

scholarly journals A bright source of telecom single photons based on quantum frequency conversion

2021 ◽  
Vol 118 (17) ◽  
pp. 174003
Author(s):  
Christopher L. Morrison ◽  
Markus Rambach ◽  
Zhe Xian Koong ◽  
Francesco Graffitti ◽  
Fiona Thorburn ◽  
...  
Keyword(s):  
Frequency Conversion ◽  
Single Photons ◽  
Quantum Frequency ◽  
Bright Source

scholarly journals Two-Photon Interference Using Background-Free Quantum Frequency Conversion of Single Photons Emitted by an InAs Quantum Dot

2012 ◽  
Vol 109 (14) ◽  
Author(s):  
Serkan Ates ◽  
Imad Agha ◽  
Angelo Gulinatti ◽  
Ivan Rech ◽  
Matthew T. Rakher ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Frequency Conversion ◽  
Single Photons ◽  
Quantum Frequency ◽  
Two Photon ◽  
Inas Quantum Dot

scholarly journals Deterministic reshaping of single-photon spectra using cross-phase modulation

2016 ◽  
Vol 2 (3) ◽  
pp. e1501223 ◽  
Author(s):  
Nobuyuki Matsuda
Keyword(s):  
Information Processing ◽  
Wave Packet ◽  
Phase Modulation ◽  
Frequency Conversion ◽  
Quantum Information Processing ◽  
Single Photon ◽  
Low Noise ◽  
Single Photons ◽  
Cross Phase Modulation ◽  
All Optical

The frequency conversion of light has proved to be a crucial technology for communication, spectroscopy, imaging, and signal processing. In the quantum regime, it also offers great potential for realizing quantum networks incorporating disparate physical systems and quantum-enhanced information processing over a large computational space. The frequency conversion of quantum light, such as single photons, has been extensively investigated for the last two decades using all-optical frequency mixing, with the ultimate goal of realizing lossless and noiseless conversion. I demonstrate another route to this target using frequency conversion induced by cross-phase modulation in a dispersion-managed photonic crystal fiber. Owing to the deterministic and all-optical nature of the process, the lossless and low-noise spectral reshaping of a single-photon wave packet in the telecommunication band has been readily achieved with a modulation bandwidth as large as 0.4 THz. I further demonstrate that the scheme is applicable to manipulations of a nonclassical frequency correlation, wave packet interference, and entanglement between two photons. This approach presents a new coherent frequency interface for photons for quantum information processing.

Frequency Conversion of Narrowband Single Photons from a SPDC Pair Source

CLEO: 2014 ◽  
2014 ◽  
Author(s):  
Andreas Lenhard ◽  
Stephan Kucera ◽  
José Brito ◽  
Jürgen Eschner ◽  
Christoph Becher
Keyword(s):  
Frequency Conversion ◽  
Single Photons
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