scholarly journals Feasibility of single-photon cross-phase modulation using metastable xenon in a high finesse cavity

2015 ◽  
Vol 337 ◽  
pp. 57-61 ◽  
Author(s):  
B.T. Kirby ◽  
G.T. Hickman ◽  
T.B. Pittman ◽  
J.D. Franson
Keyword(s):  
Phase Modulation ◽  
Single Photon ◽  
Cross Phase Modulation ◽  
High Finesse ◽  
High Finesse Cavity

scholarly journals Large conditional single-photon cross-phase modulation

2016 ◽  
Vol 113 (35) ◽  
pp. 9740-9744 ◽  
Author(s):  
Kristin M. Beck ◽  
Mahdi Hosseini ◽  
Yiheng Duan ◽  
Vladan Vuletić
Keyword(s):  
Phase Shift ◽  
Quantum Logic ◽  
Phase Modulation ◽  
Single Photon ◽  
Optical Cavity ◽  
Cross Phase Modulation ◽  
Quantum Process ◽  
Fundamental Limitations ◽  
Quantum Optical ◽  
And Control

Deterministic optical quantum logic requires a nonlinear quantum process that alters the phase of a quantum optical state by π through interaction with only one photon. Here, we demonstrate a large conditional cross-phase modulation between a signal field, stored inside an atomic quantum memory, and a control photon that traverses a high-finesse optical cavity containing the atomic memory. This approach avoids fundamental limitations associated with multimode effects for traveling optical photons. We measure a conditional cross-phase shift of π/6 (and up to π/3 by postselection on photons that remain in the system longer than average) between the retrieved signal and control photons, and confirm deterministic entanglement between the signal and control modes by extracting a positive concurrence. By upgrading to a state-of-the-art cavity, our system can reach a coherent phase shift of π at low loss, enabling deterministic and universal photonic quantum logic.

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.

ENTANGLEMENT CONCENTRATION WITH CROSS-KERR NONLINEARITY

2014 ◽  
Vol 28 (05) ◽  
pp. 1450010
Author(s):  
WEIFANG ZHANG ◽  
DA-CHUANG LI ◽  
WEI XIONG ◽  
CUI-PING XU ◽  
HAO QIU ◽  
...  
Keyword(s):  
Phase Modulation ◽  
Single Photon ◽  
Kerr Nonlinearity ◽  
Ghz State ◽  
Entanglement Concentration ◽  
Modulation Method ◽  
Entangled State ◽  
Accurate Information ◽  
Cross Phase Modulation ◽  
Double Cross

We propose a protocol for realizing two entanglement concentration scheme with cross-Kerr nonlinearity and double cross-phase modulation method. In our protocols, two remote parties do not require the accurate information of the less entangled state and the double cross-phase modulation is introduced to overcome the errors caused by the imperfect Kerr interaction. By this way, a single-photon entanglement is concentrated, and a three-photon polarized GHZ state is also achieved. Furthermore this protocol can be scaled to multiphoton polarized GHZ state concentration and the giant Kerr media is not needed, which makes our protocols more feasible in experiment.

scholarly journals Removal of cross-phase modulation artifacts in ultrafast pump–probe dynamics by deep learning

APL Photonics ◽  
2021 ◽  
Vol 6 (7) ◽  
pp. 076104
Author(s):  
A. Bresci ◽  
M. Guizzardi ◽  
C. M. Valensise ◽  
F. Marangi ◽  
F. Scotognella ◽  
...  
Keyword(s):  
Deep Learning ◽  
Phase Modulation ◽  
Cross Phase Modulation ◽  
Pump Probe
Sign in / Sign up

Export Citation Format

Share Document