Results 21 to 30 of about 357,914 (286)

Quantum optical waveform conversion [PDF]

, 2010
Currently proposed architectures for long-distance quantum communication rely on networks of quantum processors connected by optical communications channels [1,2].
A. P. Vandevender, D. Kielpinski, H. M. Wiseman, J. F. Corney   +3 more
core   +2 more sources

Enhancing quantum teleportation efficacy with noiseless linear amplification

Nature Communications, 2023
Quantum teleportation constitutes a fundamental tool for various applications in quantum communication and computation. However, state-of-the-art continuous-variable quantum teleportation is restricted to moderate fidelities and short-distance ...
Jie Zhao, Hao Jeng, Lorcán O. Conlon, Spyros Tserkis, Biveen Shajilal, Kui Liu, Timothy C. Ralph, Syed M. Assad, Ping Koy Lam   +8 more
doaj   +1 more source

Polar codes in network quantum information theory [PDF]

, 2016
Polar coding is a method for communication over noisy classical channels which is provably capacity-achieving and has an efficient encoding and decoding. Recently, this method has been generalized to the realm of quantum information processing, for tasks
Hirche, Christoph, Morgan, Ciara, Wilde, Mark M.   +2 more
core   +3 more sources

Quantum broadcast communication [PDF]

, 2006
Broadcast encryption allows the sender to securely distribute his/her secret to a dynamically changing group of users over a broadcast channel. In this paper, we just consider a simple broadcast communication task in quantum scenario, which the central ...
Beige A, Bennett C H, Cai Q Y, Cai Q Y, Fiat A, Gao T, Gao T, Gao T, Jin X R, Ma H Q, Man Z X, Tang Chao-Jing, Wang C, Wang J, Wang J, Wang Jian, Yang L, Zhang Quan, Zhang Y Q, Zhang Y S, Zhang Z J, Zhang Z J   +21 more
core   +2 more sources

Discriminating mixed qubit states with collective measurements

Communications Physics, 2023
It is a central fact in quantum mechanics that non-orthogonal states cannot be distinguished perfectly. In general, the optimal measurement for distinguishing such states is a collective measurement.
Lorcán O. Conlon, Falk Eilenberger, Ping Koy Lam, Syed M. Assad   +3 more
doaj   +1 more source

Observation of quantum fingerprinting beating the classical limit [PDF]

, 2016
Quantum communication has historically been at the forefront of advancements, from fundamental tests of quantum physics to utilizing the quantum-mechanical properties of physical systems for practical applications.
Chen, Si-Jing, Chen, Teng-Yun, Guan, Jian-Yu, Li, Li, Li, Yuan, Pan, Jian-Wei, Wang, Zhen, Xu, Feihu, Yang, Xiao-Yan, Yin, Hua-Lei, You, Li-Xing, Zhang, Qiang, Zhang, Wei-Jun   +12 more
core   +2 more sources

Conditional quantum operation of two exchange-coupled single-donor spin qubits in a MOS-compatible silicon device

Nature Communications, 2021
Operating donor-based quantum computers in silicon is hindered by the dependence of inter-qubit coupling on the precise donor position. Here, the authors show controlled rotation operation on exchange-coupled electron spins in the weak-exchange regime ...
Mateusz T. Ma̧dzik, Arne Laucht, Fay E. Hudson, Alexander M. Jakob, Brett C. Johnson, David N. Jamieson, Kohei M. Itoh, Andrew S. Dzurak, Andrea Morello   +8 more
doaj   +1 more source

Quantum Communications

, 2023
The second quantum revolution has been picking up momentum over the last decade. Quantum technologies are starting to attract more attention from governments, private companies, investors, and public. The ability to control individual quantum systems for the purpose of information processing and communication is no longer a theoretical dream, but is ...
Hajdušek, Michal, Van Meter, Rodney
openaire   +2 more sources

Quantum Forbidden-Interval Theorems for Stochastic Resonance [PDF]

, 2008
We extend the classical forbidden-interval theorems for a stochastic-resonance noise benefit in a nonlinear system to a quantum-optical communication model and a continuous-variable quantum key distribution model.
Bart Kosko, Bennett C H Brassard G, Benzi R, Breiman L, Gerry C C, Glauber R J, Goychuk I, Hirano T Konishi T Namiki R, Kosko B, Mark M Wilde, Mitaim S, Nielsen M A, Nikias C L, Scarani V Bechmann-Pasquinucci H Cerf N J Dusek M Lutkenhaus N Peev M   +13 more
core   +3 more sources

Nonlocal realism tests and quantum state tomography in Sagnac-based type-II polarization-entanglement SPDC-source

Heliyon, 2021
We have experimentally created a robust, ultrabright and phase-stable polarization-entangled state close to maximally entangled Bell-state with %98-fidelity using the type-II spontaneous parametric down-conversion (SPDC) process in periodically-poled ...
Ali Motazedifard, S.A. Madani, J.J. Dashkasan, N.S. Vayaghan   +3 more
doaj   +1 more source