Bidirectional teleportation through an entangled coherent quantum network

2021 ◽  
Author(s):  
Soumia Aliloute ◽  
Abderrahim EL ALLATI ◽  
Ibrahim EL AOUADI ◽  
Nasser Metwally
Keyword(s):  
Quantum Network ◽  
Coherent Quantum

scholarly journals Communication via an entangled coherent quantum network

2011 ◽  
Vol 83 (6) ◽  
pp. 065002 ◽  
Author(s):  
A El Allati ◽  
Y Hassouni ◽  
N Metwally
Keyword(s):  
Quantum Network ◽  
Coherent Quantum

Quantum network coding without loss of information

2021 ◽  
Vol 20 (2) ◽  
Author(s):  
Xing-Bo Pan ◽  
Gang Xu ◽  
Zong-Peng Li ◽  
Xiu-Bo Chen ◽  
Yi-Xian Yang
Keyword(s):  
Network Coding ◽  
Quantum Network ◽  
Loss Of Information ◽  
Quantum Network Coding

scholarly journals Efficient experimental quantum fingerprinting with channel multiplexing and simultaneous detection

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiaoqing Zhong ◽  
Feihu Xu ◽  
Hoi-Kwong Lo ◽  
Li Qian
Keyword(s):  
Communication Complexity ◽  
Single Photon ◽  
Simultaneous Detection ◽  
Minimum Amount ◽  
Photon Detectors ◽  
Communication Time ◽  
Quantum Communication Complexity ◽  
Detection Of Signals ◽  
Coherent Quantum ◽  
Quantum Fingerprinting

AbstractQuantum communication complexity explores the minimum amount of communication required to achieve certain tasks using quantum states. One representative example is quantum fingerprinting, in which the minimum amount of communication could be exponentially smaller than the classical fingerprinting. Here, we propose a quantum fingerprinting protocol where coherent states and channel multiplexing are used, with simultaneous detection of signals carried by multiple channels. Compared with an existing coherent quantum fingerprinting protocol, our protocol could consistently reduce communication time and the amount of communication by orders of magnitude by increasing the number of channels. Our proposed protocol can even beat the classical limit without using superconducting-nanowire single photon detectors. We also report a proof-of-concept experimental demonstration with six wavelength channels to validate the advantage of our protocol in the amount of communication. The experimental results clearly prove that our protocol not only surpasses the best-known classical protocol, but also remarkably outperforms the existing coherent quantum fingerprinting protocol.

scholarly journals External control of qubit-photon interaction and multi-qubit reset in a dissipative quantum network

2021 ◽  
Vol 64 (5) ◽  
Author(s):  
Xian-Peng Zhang ◽  
Li-Tuo Shen ◽  
Yuan Zhang ◽  
Luyan Sun ◽  
Huaizhi Wu ◽  
...  
Keyword(s):  
External Control ◽  
Quantum Network ◽  
Photon Interaction

scholarly journals Optimal teleportation via noisy quantum channels without additional qubit resources

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Dong-Gil Im ◽  
Chung-Hyun Lee ◽  
Yosep Kim ◽  
Hyunchul Nha ◽  
M. S. Kim ◽  
...  
Keyword(s):  
Quantum Computing ◽  
Quantum Teleportation ◽  
Quantum Communication ◽  
Quantum Noise ◽  
Single Copy ◽  
Entangled State ◽  
Quantum Network ◽  
Quantum Channels ◽  
Maximally Entangled State ◽  
Near Term

AbstractQuantum teleportation exemplifies how the transmission of quantum information starkly differs from that of classical information and serves as a key protocol for quantum communication and quantum computing. While an ideal teleportation protocol requires noiseless quantum channels to share a pure maximally entangled state, the reality is that shared entanglement is often severely degraded due to various decoherence mechanisms. Although the quantum noise induced by the decoherence is indeed a major obstacle to realizing a near-term quantum network or processor with a limited number of qubits, the methodologies considered thus far to address this issue are resource-intensive. Here, we demonstrate a protocol that allows optimal quantum teleportation via noisy quantum channels without additional qubit resources. By analyzing teleportation in the framework of generalized quantum measurement, we optimize the teleportation protocol for noisy quantum channels. In particular, we experimentally demonstrate that our protocol enables to teleport an unknown qubit even via a single copy of an entangled state under strong decoherence that would otherwise preclude any quantum operation. Our work provides a useful methodology for practically coping with decoherence with a limited number of qubits and paves the way for realizing noisy intermediate-scale quantum computing and quantum communication.

scholarly journals Duality between coherent quantum phase-slip and the Josephson junction in nanowires by dual Hamiltonian method

2019 ◽  
Vol 33 (25) ◽  
pp. 1950291
Author(s):  
M. Yoneda ◽  
M. Niwa ◽  
N. Hirata ◽  
M. Motohashi
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Josephson Junction ◽  
Quantum Phase ◽  
Quantum Field ◽  
Phase Slip ◽  
Hamiltonian Method ◽  
Single Junction ◽  
Quantum Phase Slip ◽  
Coherent Quantum

A method was devised to construct a generalized dual field theory with a quantum field theory named the dual Hamiltonian (DH) method. As a simple example using this method, we examined the duality between coherent quantum phase-slip and Josephson junction (JJ) in single junction systems and nanowires. This method was proved to be reliable within the Villain approximation.

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