Results 131 to 140 of about 4,287,757 (400)
Strong converse rates for quantum communication [PDF]
, 2015 We revisit a fundamental open problem in quantum information theory, namely whether it is possible to transmit quantum information at a rate exceeding the channel capacity if we allow for a non-vanishing probability of decoding error.
Tomamichel, Marco +2 more
core +4 more sources
Entanglement cost of quantum channels [PDF]
2012 IEEE International Symposium on Information Theory Proceedings, 2012 The entanglement cost of a quantum channel is the minimal rate at which entanglement (between sender and receiver) is needed in order to simulate many copies of a quantum channel in the presence of free classical communication. In this paper we show how to express this quantity as a regularised optimisation of the entanglement formation over states ...
Berta, M +3 more
openaire +8 more sources
Quantum Entanglement Capacity with Classical Feedback
, 2007 For any quantum discrete memoryless channel, we define a quantity called quantum entanglement capacity with classical feedback ($E_B$), and we show that this quantity lies between two other well-studied quantities.
A. W. Leung +5 more
core +1 more source
Reciprocal Quantum Channels [PDF]
11th Italian Quantum Information Science conference (IQIS2018), 2019 We report the presence of an asymmetry that arises when considering the performances of quantum communication channels whose outputs are connected via a rigid, distance-preserving, yet not completely-positive, transformation. From a classical perspective these transmission lines should exhibit the same communication efficiency which is lost in the ...
Vittorio Giovannetti, Matteo Rosati
openaire +2 more sources
Advanced Functional Materials, EarlyView.This study demonstrates that in sputter‐deposited Tb3Fe5O12 (TbIG)/nonmagnetic metal (NM) heterostructures, the interfacial Dzyaloshinskii–Moriya Interaction (DMI) originates at the TbIG/NM interface. Furthermore, measurements suggest a significant interfacial DMI arising from a second non‐local interface, created by inserting a Cu spacer layer between
Stefano Fedel +6 more
wiley +1 more source
An Infinite Sequence of Additive Channels: the Classical Capacity of Cloning Channels
, 2013 We introduce an infinite sequence of quantum channels for which the Holevo capacity is additive. The channel series is closely related to the quantum channels arising from universal quantum cloning machines. The additivity proof is motivated by a special
Bradler, Kamil
core +1 more source
Advanced Functional Materials, EarlyView.A materials and device design concept that comprises a self‐assembled ultra‐thin epitaxial ion‐transporting layer, an amorphous oxide overcoat oxygen‐blocking layer, and a partial filament formed during an electroforming step is proposed for low‐current multilevel resistive switching devices.
Ming Xiao +17 more
wiley +1 more source
The Squashed Entanglement of a Quantum Channel [PDF]
IEEE Transactions on Information Theory, 2013 This paper defines the squashed entanglement of a quantum channel as the maximum squashed entanglement that can be registered by a sender and receiver at the input and output of a quantum channel, respectively.
M. Takeoka, S. Guha, M. Wilde
semanticscholar +1 more source
Wetting of Surface Grafted Hydrophilic‐b‐Hydrophobic Block Copolymer Brushes
Advanced Functional Materials, EarlyView.The wetting properties of surface grafted diblock copolymer brushes are influenced by the thickness of the hydrophilic bottom block and the hydrophobic top block. The surface adapts in presence of water and the contact angles of the bottom block shine through. Abstract The wetting of diblock copolymer brushes by water is studied.
Benjamin Leibauer +7 more
wiley +1 more source
Entanglement-assisted communication of classical and quantum information [PDF]
, 2010 We consider the problem of transmitting classical and quantum information reliably over an entanglement-assisted quantum channel. Our main result is a capacity theorem that gives a three-dimensional achievable rate region.
Hsieh, Min-Hsiu, Wilde, Mark M.
core +3 more sources