scholarly journals Towards Non-Degenerate Quantum Lithography

2018 ◽  
Vol 8 (8) ◽  
pp. 1292
Author(s):  
Yu Zhou ◽  
Tao Peng ◽  
Hui Chen ◽  
Jianbin Liu ◽  
Yanhua Shih
Keyword(s):  
Experimental Results ◽  
Photon Pair ◽  
Photon Pairs ◽  
Signal Photon ◽  
Entangled Photon Pairs ◽  
De Broglie Wavelength ◽  
Double Slit

The photonic de Broglie wavelength of a non-degenerate entangled photon pair is measured by using a Young’s double slit interferometer, which proves that the non-degenerate entangled photon pairs have the potential to be used in quantum lithography. Experimental results show that the de Broglie wavelength of non-degenerate biphotons is well defined and its wavelength is neither the wavelength of the signal photon, nor the wavelength of the idler photon. According to the de Broglie equation, its wavelength corresponds to the momentum of the biphoton, which equals the sum of the momenta of signal and idler photons. The non-degenerate ghost interference/diffraction is also observed in these experiments.

Design and Analysis of the Secure Scheme for Quantum Positioning based on Entangled Photon Pair

2016 ◽  
Vol 12 (2) ◽  
pp. 22-35
Author(s):  
Hong-Mei Huang ◽  
Lu-Ping Xu
Keyword(s):  
Photon Pair ◽  
Entangled Photons ◽  
Coincidence Counting ◽  
Positioning Accuracy ◽  
Photon Pairs ◽  
Bandwidth Limitation ◽  
Accuracy Of Measurement ◽  
Entangled Photon Pairs ◽  
Spatial Positioning ◽  
User Location

Positioning accuracy of the traditional positioning has been limited because of the power and bandwidth limitation, quantum entanglement and compression technology can greatly improve the accuracy of measurement and synchronization. So, using the coherence of entangled photons and the principle of quantum spatial positioning, the scheme of quantum positioning with entangled photon pair was proposed, which was consisted of ground unit, satellite and the user three parts, the ground unit respectively sent EPR entangled photon pairs to two satellites three times, then the entangled photon pairs were sent to user by satellites, User carrying HOM interferometer, when the coincidence counting rate reaches the maximum three times, the user location can be got by computing. In the end, the quantum positioning and the traditional positioning technology were compared from the aspects of positioning accuracy, safety and so on.

scholarly journals Taming the Delayed Choice Quantum Eraser

Quanta ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 44-56 ◽  
Author(s):  
Johannes Fankhauser
Keyword(s):  
Photon Pair ◽  
Standard Quantum ◽  
Quantum Eraser ◽  
Delayed Choice ◽  
Interference Fringes ◽  
Signal Photon ◽  
Proper Account ◽  
Double Slit ◽  
De Broglie Bohm

I discuss the delayed choice quantum eraser experiment by drawing an analogy to a Bell-type measurement and giving a straightforward account in standard quantum mechanics. The delayed choice quantum eraser experiment turns out to resemble a Bell-type scenario in which the resolution of the paradox is rather trivial, and so there really is no mystery.  At first glance, the experiment suggests that measurements on one part of an entangled photon pair (the idler) can be employed to control whether the measurement outcome of the other part of the photon pair (the signal) produces interference fringes at a screen after being sent through a double slit. Significantly, the choice whether there is interference or not can be made long after the signal photon encounters the screen. The results of the experiment have been alleged to invoke some sort of backwards in time influence. I argue that this issue can be eliminated by taking into proper account the role of the signal photon. Likewise, in the de Broglie–Bohm picture the trajectories of the particle can be given a well-defined description at any instant of time during the experiment. Thus, it is again clear that there is no need to resort to any kind of backwards in time influence.Quanta 2019; 8: 44-56.

Progress Toward Generation of Spatially-Entangled Photon Pairs in a Few-Mode Fiber

2020 ◽  
Author(s):  
Afshin Shamsshooli ◽  
Cheng Guo ◽  
Michael Vasilyev ◽  
Francesca Parmigiani ◽  
Xiaoying Li
Keyword(s):  
Photon Pairs ◽  
Entangled Photon Pairs

scholarly journals Engineering entangled photon pairs with metal–organic frameworks

2021 ◽  
Author(s):  
Rubén A. Fritz ◽  
Yamil J. Colón ◽  
Felipe Herrera
Keyword(s):  
Frequency Conversion ◽  
Metal Organic Frameworks ◽  
Optical Frequency ◽  
New Materials ◽  
Optical Frequency Conversion ◽  
Photon Pairs ◽  
Metal Organic ◽  
Entangled Photon Pairs ◽  
Conversion Efficiencies

The discovery and design of new materials with competitive optical frequency conversion efficiencies can accelerate the development of scalable photonic quantum technologies.

Generation and detection of magnified images via illumination by entangled photon pairs

2005 ◽  
Vol 72 (3) ◽  
Author(s):  
Ivan F. Santos ◽  
Leonardo Neves ◽  
G. Lima ◽  
C. H. Monken ◽  
S. Pádua
Keyword(s):  
Photon Pairs ◽  
Entangled Photon Pairs

scholarly journals Entangled photon pairs from the optical decay of biexcitons

1999 ◽  
Vol 111 (9) ◽  
pp. 495-500 ◽  
Author(s):  
S Savasta ◽  
G Martino ◽  
R Girlanda
Keyword(s):  
Photon Pairs ◽  
Entangled Photon Pairs

scholarly journals Entangled Photon Pairs Produced by a Quantum Dot Strongly Coupled to a Microcavity

2008 ◽  
Vol 100 (24) ◽  
Author(s):  
R. Johne ◽  
N. A Gippius ◽  
G. Pavlovic ◽  
D. D. Solnyshkov ◽  
I. A. Shelykh ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Strongly Coupled ◽  
Photon Pairs ◽  
Entangled Photon Pairs

scholarly journals Coherently controlled quantum features in a coupled interferometric scheme

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Byoung S. Ham
Keyword(s):  
Optical Materials ◽  
Bell Inequality ◽  
Third Order ◽  
Deterministic Method ◽  
Photon Pairs ◽  
Wave Nature ◽  
Parametric Down Conversion ◽  
Pair Generation ◽  
Entangled Photon Pairs ◽  
Down Conversion

AbstractOver the last several decades, entangled photon pairs generated by spontaneous parametric down conversion processes in both second-order and third-order nonlinear optical materials have been intensively studied for various quantum features such as Bell inequality violation and anticorrelation. In an interferometric scheme, anticorrelation results from photon bunching based on randomness when entangled photon pairs coincidently impinge on a beam splitter. Compared with post-measurement-based probabilistic confirmation, a coherence version has been recently proposed using the wave nature of photons. Here, the origin of quantum features in a coupled interferometric scheme is investigated using pure coherence optics. In addition, a deterministic method of entangled photon-pair generation is proposed for on-demand coherence control of quantum processing.

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