scholarly journals Minimal quantum heat manager boosted by bath spectral filtering

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
M. Tahir Naseem ◽  
Avijit Misra ◽  
Özgür E. Müstecaplioğlu ◽  
Gershon Kurizki
Keyword(s):  
Spectral Filtering

On strategy for determining displacement solely from perturbed phase of self mixing interferometry

2020 ◽  
Author(s):  
Junaid Khan
Keyword(s):  
Coupling Factor ◽  
Moving Target ◽  
Linear Phase ◽  
Spectral Filtering ◽  
Signal Shape ◽  
Phase Equation ◽  
Sensing Applications ◽  
Computationally Expensive ◽  
Fixed Point Methods ◽  
Factor C

While self mixing interferometry(SMI) has proven to be suitable for displacement measurement and other sensing applications,its characteristic self mixing signal shape is strongly governed by the non-linear phase equation which forms relation between perturbed and unperturbed phase of self mixing laser.Therefore, while it is desirable for robust estimation of displacement of moving target, the algorithms to achieve this must have an objective strategy which can be achieved by understanding the characteristic of extracting knowledge of perturbed phase from unperturbed phase. Therefore, it has been proved and shown that such strategy must not involve sole methods where perturbed phase is continuous function of unperturbed phase (e.g:Taylor series or fixed point methods) or through successive displacements (e.g: variations of Gauss Seidal method). Subset of this strategy is to perform spectral filtering of perturbed phase followed by perturbative or homotopic deformation. A less computationally expensive approach of this strategy is adopted to achieve displacement with mean error of 62.2nm covering all feedback regimes, when coupling factor 'C' is unknown.<br>

scholarly journals Quantum teleportation with imperfect quantum dots

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
F. Basso Basset ◽  
F. Salusti ◽  
L. Schweickert ◽  
M. B. Rota ◽  
D. Tedeschi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Teleportation ◽  
Bell State ◽  
Spectral Filtering ◽  
State Measurement ◽  
Communication Architectures ◽  
The One ◽  
Experimental Findings ◽  
Photon Source ◽  
Remarkable Progress

AbstractEfficient all-photonic quantum teleportation requires fast and deterministic sources of highly indistinguishable and entangled photons. Solid-state-based quantum emitters—notably semiconductor quantum dots—are a promising candidate for the role. However, despite the remarkable progress in nanofabrication, proof-of-concept demonstrations of quantum teleportation have highlighted that imperfections of the emitter still place a major roadblock in the way of applications. Here, rather than focusing on source optimization strategies, we deal with imperfections and study different teleportation protocols with the goal of identifying the one with maximal teleportation fidelity. Using a quantum dot with sub-par values of entanglement and photon indistinguishability, we show that the average teleportation fidelity can be raised from below the classical limit to 0.842(14), adopting a polarization-selective Bell state measurement and moderate spectral filtering. Our results, which are backed by a theoretical model that quantitatively explains the experimental findings, loosen the very stringent requirements set on the ideal entangled-photon source and highlight that imperfect quantum dots can still have a say in teleportation-based quantum communication architectures.

Mode locked fiber laser based on self-phase modulation and spectral filtering

2016 ◽  
Author(s):  
I. N. Bychkov ◽  
A. I. Baranov ◽  
I. S. Ulianov ◽  
D. V. Myasnikov ◽  
I. E. Samartsev
Keyword(s):  
Fiber Laser ◽  
Phase Modulation ◽  
Spectral Filtering ◽  
Self Phase Modulation

scholarly journals Spectral filtering in a diode-pumped Nd:YLF regenerative amplifier using a volume Bragg grating

2007 ◽  
Vol 15 (13) ◽  
pp. 8197 ◽  
Author(s):  
Andrey V. Okishev ◽  
Christophe Dorrer ◽  
Vadim I. Smirnov ◽  
Leonid B. Glebov ◽  
Jonathan D. Zuegel
Keyword(s):  
Bragg Grating ◽  
Spectral Filtering ◽  
Regenerative Amplifier ◽  
Volume Bragg Grating ◽  
Diode Pumped

Spectral filtering for image sensors

2001 ◽  
Author(s):  
Caroline Bringolf ◽  
Patrice J. Twardowski ◽  
Pierre Blanchard ◽  
Herve Moutenet
Keyword(s):  
Image Sensors ◽  
Spectral Filtering
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