Results 51 to 60 of about 362,057 (331)

Programmable quantum circuits in a large-scale photonic waveguide array

npj Quantum Information
Over the past decade, integrated quantum photonic technologies have shown great potential as a platform for studying quantum phenomena and realizing large-scale quantum information processing.
Yang Yang, Robert J. Chapman, Akram Youssry, Ben Haylock, Francesco Lenzini, Mirko Lobino, Alberto Peruzzo   +6 more
doaj   +1 more source

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

Advanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu, Varun Shah, Rodion Vladimirovich Belosludov, Mohammad Saeed Bahramy   +3 more
wiley   +1 more source

Experimental graybox quantum system identification and control

npj Quantum Information
Understanding and controlling engineered quantum systems is key to developing practical quantum technology. However, given the current technological limitations, such as fabrication imperfections and environmental noise, this is not always possible.
Akram Youssry, Yang Yang, Robert J. Chapman, Ben Haylock, Francesco Lenzini, Mirko Lobino, Alberto Peruzzo   +6 more
doaj   +1 more source

Experimental noiseless linear amplification using weak measurements

New Journal of Physics, 2016
The viability of quantum communication schemes rely on sending quantum states of light over long distances. However, transmission loss can degrade the signal strength, adding noise.
Joseph Ho, Allen Boston, Matthew Palsson, Geoff Pryde   +3 more
doaj   +1 more source

Multiphoton quantum communication in quantum networks [PDF]

Physical Review A, 2014
We propose and analyze a multiphoton-state coherent transport protocol in a coupled-resonator quantum network. A multiphoton swap gate between two antipodes can be achieved with neither external modulation nor coupling strength engineering. Moreover, we extend this result to a coupled-resonator chain of arbitrary length with different coupling ...
Qin, Wei, Wang, Chuan, Cao, Ye, Long, Gui Lu   +3 more
openaire   +2 more sources

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Spontaneous parametric down conversion without poling for silicon carbide and lithium niobate photonics

Scientific Reports
State-of-the-art photon sources based on spontaneous parametric down-conversion (SPDC) currently rely on artificial structuring of the material nonlinearity to satisfy phase-matching conditions. This technique, known as periodic poling, is available only
Tim F. Weiss, Hamed Arianfard, Yang Yang, Alberto Peruzzo   +3 more
doaj   +1 more source

Surpassing the repeaterless bound with a photon-number encoded measurement-device-independent quantum key distribution protocol

npj Quantum Information, 2023
Decoherence is detrimental to quantum key distribution (QKD) over large distances. One of the proposed solutions is to use quantum repeaters, which divide the total distance between the users into smaller segments to minimise the effects of the losses in
Özlem Erkılıç, Lorcán Conlon, Biveen Shajilal, Sebastian Kish, Spyros Tserkis, Yong-Su Kim, Ping Koy Lam, Syed M. Assad   +7 more
doaj   +1 more source

Reconfigurable ultra-compact graphene-based plasmonic devices

Results in Physics, 2022
We have proposed and investigated an ultra-compact graphene-based plasmonic device, where the propagation direction of SPP can be controlled flexibly by changing the chemical potential of graphene. The plasmonic devices with numerous functions, including
Yuncai Feng, Yang Zhao, Youwen Liu, Tianhui Qiu   +3 more
doaj   +1 more source

Quantum Information Complexity and Amortized Communication [PDF]

, 2014
We define a new notion of information cost for quantum protocols, and a corresponding notion of quantum information complexity for bipartite quantum channels, and then investigate the properties of such quantities.
Touchette, Dave
core