Results 111 to 120 of about 5,139,381 (338)

Semidefinite Programming Converse Bounds for Quantum Communication [PDF]

open access: yesIEEE Transactions on Information Theory, 2017
We derive several efficiently computable converse bounds for quantum communication over quantum channels in both the one-shot and asymptotic regime.
Xin Wang, K. Fang, R. Duan
semanticscholar   +1 more source

Flexible Optical Fiber Stress/Temperature Dual‐Mode Sensing Based on CaZnOS:Nd,Er

open access: yesAdvanced Functional Materials, EarlyView.
Temperature and stress sensing based on flexible optical fibers may be the key to future artificial intelligence's perception of the world, here an optical fiber sensor capable of realizing such dual mode sensing is preliminary confirmed based on CaZnOS:Nd3+,Er3+.
Pan Zheng   +12 more
wiley   +1 more source

Economically Improving Message-Unilaterally-Transmitted Quantum Secure Direct Communication to Realize Two-Way Communication [PDF]

open access: yesarXiv, 2004
We present a subtle idea to economically improve message-unilaterally-transmitted quantum secure direct communication (QSDC) protocols to realize two-way secure direct communication.
arxiv  

On the Role of Quantum Communication and Loss in Attacks on Quantum Position Verification [PDF]

open access: yesarXiv, 2022
We study the role of quantum communication in attacks on quantum position verification. In this work, we construct the first known example of a QPV protocol that is provably secure against unentangled attackers restricted to classical communication, but can be perfectly attacked by local operations and a single round of simultaneous quantum ...
arxiv  

Quantum Communication Networks and Trust Management: A Survey

open access: yesComputers Materials & Continua, 2019
This paper summarizes the state of art in quantum communication networks and trust management in recent years. As in the classical networks, trust management is the premise and foundation of quantum secure communication and cannot simply be attributed to
Shibin Zhang   +7 more
semanticscholar   +1 more source

Ultrahigh‐resolution (λ/10) Femtosecond Laser Writing of Polymer‐Encapsulated Multicolor Perovskite Patterns Beyond the Diffraction Limit

open access: yesAdvanced Functional Materials, EarlyView.
Fabrication of in situ polymer‐encapsulated stable perovskite patterns of arbitrary shapes and pixel arrays with a resolution of 80 nm is reported by the femtosecond (fs) laser (800 nm) super‐resolution writing technique. The two‐photon absorption‐induced laser ablation is attributed to the achieved feature sizes as small as λ/10.
Xuebing Wen   +8 more
wiley   +1 more source

High-fidelity sub-microsecond single-shot electron spin readout above 3.5 K

open access: yesNature Communications
Electron spin qubits in semiconductors are a promising platform for large-scale quantum computing due to their small size, long coherence and manufacturability.
H. Geng   +11 more
doaj   +1 more source

Quantum Random Access Codes using Single $d$-level Systems

open access: yes, 2015
Random access codes (RACs) are used by a party to despite limited communication access an arbitrary subset of information held by another party. Quantum resources are known to enable RACs that break classical limitations.
Bourennane, Mohamed   +3 more
core   +1 more source

Controlled Aggregation of Pyrene‐Based Supramolecular Nanostructures for Light‐Driven Switchable H2 or H2O2 Production

open access: yesAdvanced Functional Materials, EarlyView.
This work reports the self‐assembly of a pyrene derivative into two distinct nanostructures and their application in visible‐light photocatalysis. The two nanostructures exhibit completely different yet complementary photocatalytic activities, promoting either H2 or H2O2 evolution.
Marianna Barbieri   +6 more
wiley   +1 more source

Quantum state smoothing: why the types of observed and unobserved measurements matter

open access: yesNew Journal of Physics, 2019
We investigate the estimation technique called quantum state smoothing introduced in (Guevara and Wiseman 2015 Phys. Rev. Lett. 115 180407), which offers a valid quantum state estimate for a partially monitored system, conditioned on the observed record ...
Areeya Chantasri   +2 more
doaj   +1 more source

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