Results 1 to 10 of about 4,417,507 (366)
Energy-Constrained LOCC-Assisted Quantum Capacity of the Bosonic Dephasing Channel [PDF]
Entropy, 2023 We study the LOCC-assisted quantum capacity of a bosonic dephasing channel with energy constraint on the input states. We start our analysis by focusing on the energy-constrained squashed entanglement of the channel, which is an upper bound for the ...
Amir Arqand +2 more
doaj +4 more sources
Capacity and Quantum Geometry of Parametrized Quantum Circuits [PDF]
PRX Quantum, 2021 To harness the potential of noisy intermediate-scale quantum devices, it is paramount to find the best type of circuits to run hybrid quantum-classical algorithms.
Tobias Haug, Kishor Bharti, M.S. Kim
doaj +8 more sources
Narrow bounds for the quantum capacity of thermal attenuators. [PDF]
Nat Commun, 2018 Thermal attenuator channels model the decoherence of quantum systems interacting with a thermal bath, e.g., a two-level system subject to thermal noise and an electromagnetic signal traveling through a fiber or in free-space.
Rosati M, Mari A, Giovannetti V.
europepmc +3 more sources
Bounding the quantum capacity with flagged extensions [PDF]
Quantum, 2022 In this article we consider flagged extensions of convex combination of quantum channels, and find general sufficient conditions for the degradability of the flagged extension.
Farzad Kianvash +2 more
doaj +3 more sources
Communication Capacity of Quantum Computation [PDF]
Physical Review Letters, 2000 4 pages ...
Sougato Bose, Luke Rallan, Vlatko Vedral
openalex +6 more sources
The private classical capacity and quantum capacity of a quantum channel [PDF]
IEEE Transactions on Information Theory, 2003 A formula for the capacity of a quantum channel for transmitting private classical information is derived. This is shown to be equal to the capacity of the channel for generating a secret key, and neither capacity is enhanced by forward public classical ...
I. Devetak
semanticscholar +5 more sources
The Structure and Quantum Capacity of a Partially Degradable Quantum Channel [PDF]
IEEE Access, 2014 The quantum capacity of degradable quantum channels has been proven to be additive. On the other hand, there is no general rule for the behavior of quantum capacity for antidegradable quantum channels.
Laszlo Gyongyosi
doaj +2 more sources
Quantum capacities of transducers
Nature Communications, 2022 High-performance quantum transducers, which faithfully convert quantum information between disparate physical carriers, are essential in quantum science and technology.
Chiao-Hsuan Wang +2 more
doaj +5 more sources
On the complementary quantum capacity of the depolarizing channel [PDF]
Quantum, 2017 The qubit depolarizing channel with noise parameter $\eta$ transmits an input qubit perfectly with probability $1-\eta$, and outputs the completely mixed state with probability $\eta$.
Debbie Leung, John Watrous
doaj +3 more sources
The capacity of the quantum depolarizing channel [PDF]
IEEE Transactions on Information Theory, 2003 25 pages, no figures; error in earlier version corrected; discussion of qubit depolarizing channel ...
Christopher King
openalex +5 more sources