scholarly journals C-band single photons from a trapped ion via two-stage frequency conversion

2021 ◽  
Vol 119 (8) ◽  
pp. 084001
Author(s):  
J. Hannegan ◽  
U. Saha ◽  
J. D. Siverns ◽  
J. Cassell ◽  
E. Waks ◽  
...  
Keyword(s):  
Frequency Conversion ◽  
Single Photons ◽  
Two Stage ◽  
Trapped Ion

scholarly journals Demonstration of slow light in rubidium vapor using single photons from a trapped ion

2019 ◽  
Vol 5 (10) ◽  
pp. eaav4651 ◽  
Author(s):  
J. D. Siverns ◽  
J. Hannegan ◽  
Q. Quraishi
Keyword(s):  
Large Scale ◽  
Frequency Conversion ◽  
Slow Light ◽  
Photon Emission ◽  
Practical Implementation ◽  
Single Photons ◽  
Quantum Network ◽  
Neutral Atoms ◽  
Trapped Ion ◽  
Rb Vapor

Practical implementation of quantum networks is likely to interface different types of quantum systems. Photonically linked hybrid systems, combining unique properties of each constituent system, have typically required sources with the same photon emission wavelength. Trapped ions and neutral atoms both have compelling properties as nodes and memories in a quantum network but have never been photonically linked because of vastly different operating wavelengths. Here, we demonstrate the first interaction between neutral atoms and photons emitted from a single trapped ion. We use slow light in 87Rb vapor to delay photons originating from a trapped 138Ba+ ion by up to 13.5 ± 0.5 ns, using quantum frequency conversion to overcome the frequency difference between the ion and neutral atoms. The delay is tunable and preserves the temporal profile of the photons. This result showcases a hybrid photonic interface usable as a synchronization tool—a critical component in any future large-scale quantum network.

scholarly journals High-fidelity entanglement between a trapped ion and a telecom photon via quantum frequency conversion

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Matthias Bock ◽  
Pascal Eich ◽  
Stephan Kucera ◽  
Matthias Kreis ◽  
Andreas Lenhard ◽  
...  
Keyword(s):  
Frequency Conversion ◽  
High Fidelity ◽  
Quantum Frequency ◽  
Trapped Ion

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.

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

Two-Stage Frequency Conversion of CO Laser in a Single ZnGeP2 Crystal

2013 ◽  
Author(s):  
A. A. Kotkov ◽  
A. A. Ionin ◽  
I. O. Kinyaevskiy ◽  
Yu. M. Klimachev ◽  
A. Yu. Kozlov ◽  
...  
Keyword(s):  
Frequency Conversion ◽  
Two Stage ◽  
Co Laser
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