Results 21 to 30 of about 376,550 (287)
A Compact Circular Loop Inspired Frequency and Bandwidth Reconfigurable Antenna for 4G, 5G, and X- Band Applications [PDF]
Radioengineering, 2020 This paper presents a printed patch antenna design to achieve frequency and bandwidth reconfigurability. Two RF PIN diodes are simultaneously operated to achieve the multi-reconfigurability operation.
M. Rasool +4 more
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Entropy, 2022 To guarantee information security in communication, quantum identity authentication plays a key role in politics, economy, finance, daily life and other fields.
Xiang Li +3 more
doaj +1 more source
The efficiency of quantum teleportation with three-qubit entangled state in a noisy environment
Scientific Reports, 2023 Quantum teleportation plays a significant role in the field of quantum communication. This paper investigates quantum teleportation through a noisy environment by using GHZ state and non-standard W state as quantum channels.
Chang-Yue Zhang +3 more
doaj +1 more source
Journal of High-Frequency Communication Technologies, 2023 This paper reports the design, development, fabrication, and testing of a 225-element reconfigurable reflectarray (RRA) antenna with frequency agility and beam steering capabilities.
Kavitha Narayanasamy +2 more
doaj +1 more source
Applied Sciences, 2023 This study introduces innovative designs for frequency-reconfigurable antennas that utilize ring resonators combined with either PIN diodes or RF switches.
Duygu Nazan Gençoğlan +2 more
doaj +1 more source
Minimal control power of controlled dense coding and genuine tripartite entanglement
Scientific Reports, 2017 We investigate minimal control power (MCP) for controlled dense coding defined by the channel capacity. We obtain MCPs for extended three-qubit Greenberger-Horne-Zeilinger (GHZ) states and generalized three-qubit W states.
Changhun Oh +3 more
doaj +1 more source
Remote information concentration by GHZ state and by bound entangled state [PDF]
, 2002 We compare remote information concentration by a maximally entangled GHZ state with by an unlockable bound entangled state. We find that the bound entangled state is as useful as the GHZ state, even do better than the GHZ state in the context of ...
A. Acin +21 more
core +2 more sources
Realization of GHZ states and the GHZ test via cavity QED [PDF]
Journal of Modern Optics, 2005 16 pages and 3 figures. submitted to J.
openaire +2 more sources
Conference key agreement in a quantum network
npj Quantum Information, 2023 Quantum conference key agreement (QCKA) allows multiple users to establish a secure key from a shared multi-partite entangled state. In a quantum network, this protocol can be efficiently implemented using a single copy of a N-qubit Greenberger-Horne ...
Alexander Pickston +8 more
doaj +1 more source
Design and Performance of a J Band MEMS Switch
Micromachines, 2019 This paper presents a novel J band (220−325 GHz) MEMS switch design. The equivalent circuits, the major parameters, capacitance, inductance and resistance in the circuit were extracted and calculated quantitatively to carry out the radio frequency ...
Naibo Zhang +5 more
doaj +1 more source