Results 81 to 90 of about 49,915 (309)

Quantum Cryptography Beyond Quantum Key Distribution [PDF]

open access: yes, 2015
Quantum cryptography is the art and science of exploiting quantum mechanical effects in order to perform cryptographic tasks. While the most well-known example of this discipline is quantum key distribution (QKD), there exist many other applications such
Broadbent, Anne   +8 more
core   +2 more sources

Heterotropic regulation and negative homotropic cooperativity

open access: yesFEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea   +5 more
wiley   +1 more source

Electromagnetically-induced transparency assists the Raman gradient echo memory at moderate detuning, dependent on gradient order

open access: yesNew Journal of Physics
Optical quantum memories are essential for quantum communications and photonic quantum technologies. Ensemble optical memories based on 3-level interactions are a popular basis for implementing these memories. All such memories, however, suffer from loss
Jesse L Everett   +5 more
doaj   +1 more source

Surpassing the repeaterless bound with a photon-number encoded measurement-device-independent quantum key distribution protocol

open access: yesnpj Quantum Information, 2023
Decoherence is detrimental to quantum key distribution (QKD) over large distances. One of the proposed solutions is to use quantum repeaters, which divide the total distance between the users into smaller segments to minimise the effects of the losses in
Özlem Erkılıç   +7 more
doaj   +1 more source

Quantum field theory representation in quantum computation [PDF]

open access: yes, 2021
Recently, from the deduction of the result MIP* = RE in quantum computation, it was obtained that Quantum Field Theory (QFT) allows for different forms of computation in quantum computers that Quantum Mechanics (QM) does not allow. Thus, there must exist
Machado, José Manuel   +5 more
core   +1 more source

Electron-photon interaction in quantum dots : spin and entanglement [PDF]

open access: yes, 2005
The interaction of electrons and photons lies at the heart of quantum physics. The most notable phenomena which are described by quantum physics but which obviously invalidate a classical description of the electromagnetic field - the photoelectric ...
Gywat, Oliver
core   +1 more source

Using the qubus for quantum computing [PDF]

open access: yes, 2011
In this thesis I explore using the qubus for quantum computing. The qubus is an architecture of quantum computing, where a continuous variable ancilla is used to generate operations between matter qubits. I concentrate on using the qubus for two purposes
Brown, Katherine Louise
core  

Quantum computation and communication using electron spins in quantum dots and wires [PDF]

open access: yes, 2001
The recent discovery of efficient quantum algorithms for factoring and database search has shown that quantum computing would allow to solve important problems which are intractable with conventional computers.
Burkard, Guido
core   +1 more source

Polarizable Vanadium Dipoles Promote Water Dissociation on Vanadium‐Based Metal Organic Framework

open access: yesAdvanced Functional Materials, EarlyView.
The polarization of unpaired V 3d electrons weakens the H─O bond to improve water dissociation by the dual Vδ+:O─H and Pλ−:H─O coupling hydrogen bonds formation and relaxation. P@V‐MOF electrocatalyst shows low overpotentials (94 mV in acid, 178 mV in neutral, and 77 mV in alkaline solutions) with excellent stability for effective overall water ...
Xinjuan Liu   +13 more
wiley   +1 more source

Reflections on the Role of Entanglement in the Explanation of Quantum Computational Speedup [PDF]

open access: yes, 2011
Of the many and varied applications of quantum information theory, perhaps the most fascinating is the sub-field of quantum computation. In this sub-field, computational algorithms are designed which utilise the resources available in quantum systems in ...
Cuffaro, Michael
core  

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