Results 61 to 70 of about 2,432,792 (186)

Non‐storm erosion of MeV electron outer radiation belt down to L* < 4.0 associated with successive enhancements of solar wind density

Earth and Planetary Physics, Volume 5, Issue 6, Page 581-591, November 2021., 2021
Abstract We report an unusual non‐storm erosion event of outer zone MeV electron distribution during three successive solar wind number density enhancements (SWDEs) on November 27−30, 2015. Loss of MeV electrons and energy‐dependent narrowing of electron pitch angle distributions (PAD) first developed at L* = 5.5 and then moved down to L* < 4 ...
Ying Xiong, Lun Xie, SuiYan Fu, BinBin Ni, ZuYin Pu   +4 more
wiley   +1 more source

Coherent Communication with Continuous Quantum Variables [PDF]

, 2006
The coherent bit (cobit) channel is a resource intermediate between classical and quantum communication. It produces coherent versions of teleportation and superdense coding.
Brun, Todd A., Krovi, Hari, Wilde, Mark M.   +2 more
core   +3 more sources

A Privacy‐Preserving Incentive Mechanism for Data Offloading in Satellite‐Terrestrial Crowdsensing

Wireless Communications and Mobile Computing, Volume 2021, Issue 1, 2021., 2021
Data offloading algorithm is the foundation of urban Internet of Things, which has gained attention for its large size of user engagement, low cost, and wide range of data sources, replacing traditional crowdsensing in areas such as intelligent vehicles, spectrum sensing, and environmental surveillance.
Boxiang Zhu, Jiarui Li, Zhongkai Liu, Yang Liu, Chi Lin   +4 more
wiley   +1 more source

Entanglement-assisted capacity regions and protocol designs for quantum multiple-access channels

npj Quantum Information, 2021
We solve the entanglement-assisted (EA) classical capacity region of quantum multiple-access channels (MACs) with an arbitrary number of senders. As an example, we consider the bosonic thermal-loss MAC and solve the one-shot capacity region enabled by an
Haowei Shi, Min-Hsiu Hsieh, Saikat Guha, Zheshen Zhang, Quntao Zhuang   +4 more
doaj   +1 more source

QUANTUM KEY DISTRIBUTION USING SUPER DENSE CODING [PDF]

Journal of Mechanics of Continua and Mathematical Sciences
Built based on the fundamental principles of quantum mechanics, Quantum Key Distribution (QKD) enables secure communication for distant parties. Entanglement-based protocols are a type of QKD protocol that uses the phenomenon of entanglement for ...
Tamal Deb, Jyotsna Kumar Mandal, Deeptanu Sen   +2 more
doaj   +1 more source

Negative entropy and information in quantum mechanics [PDF]

, 1997
A framework for a quantum mechanical information theory is introduced that is based entirely on density operators, and gives rise to a unified description of classical correlation and quantum entanglement. Unlike in classical (Shannon) information theory,
A. Ekert, A. Peres, A. Wehrl, B. Schumacher, C. Adami, C. E. Shannon, C. H. Bennett, C. H. Bennett, C. H. Bennett, C. H. Bennett, D. P. DiVincenzo, N. J. Cerf, N. J. Cerf, R. Jozsa, S. Lloyd   +14 more
core   +2 more sources

Catalytic quantum error correction [PDF]

, 2006
We develop the theory of entanglement-assisted quantum error correcting (EAQEC) codes, a generalization of the stabilizer formalism to the setting in which the sender and receiver have access to pre-shared entanglement.
Brun, Todd, Devetak, Igor, Hsieh, Min-Hsiu   +2 more
core   +2 more sources

More Communication with Less Entanglement

, 2015
We exhibit the intriguing phenomena of "Less is More" using a set of multipartite entangled states. We consider the quantum communication protocols for the {\em exact} teleportation, superdense coding, and quantum key distribution. We find that sometimes
Adhikari, Satyabrata, Agrawal, P., Nandi, Sumit   +2 more
core   +1 more source

Transformation of Bell states using linear optics

Physics Open
Bell states form a complete set of four maximally polarization entangled two-qubit quantum state. Being a key ingredient of many quantum applications such as entanglement based quantum key distribution protocols, superdense coding, quantum teleportation,
Sarika Mishra, R.P. Singh
doaj   +1 more source

Multi‐Species Energy‐Banded Ions in the Ionosphere During the 21 January 2005 Magnetic Storm: Low‐Altitude Edge of the Warm Plasma Cloak

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract During the 21–22 January 2005 magnetic storm, the FAST satellite observed warm (< few keV) ions in discrete energy bands on the dayside at ∼3,000 km altitude for more than 6.5 hr. We suggest that the ionospheric energy‐banded ions represent the low‐altitude edge of the warm plasma cloak observed simultaneously by magnetospheric satellites ...
J. U. Kozyra, M. W. Liemohn, C. A. Cattell, J. Dombeck, C. P. Escoubet, M. Thomsen, G. Lu, D. J. Knipp, L. J. Paxton, R. M. Skoug, H. A. Elliott, A. J. Davis, L. Rastaetter, D. DeZeeuw, C. Colpitts   +14 more
wiley   +1 more source