Results 1 to 10 of about 2,422 (38)
Optimal Unambiguous Discrimination of Quantum States [PDF]
, 2007 Unambiguously distinguishing between nonorthogonal but linearly independent quantum states is a challenging problem in quantum information processing.
Amiri, A. R. +3 more
core +1 more source
The minimum-error discrimination via Helstrom family of ensembles and Convex Optimization [PDF]
, 2009 Using the convex optimization method and Helstrom family of ensembles introduced in Ref. [1], we have discussed optimal ambiguous discrimination in qubit systems.
A. Peres +24 more
core +1 more source
Correlations in star networks: from Bell inequalities to network inequalities
New Journal of Physics, 2017 The problem of characterizing classical and quantum correlations in networks is considered. Contrary to the usual Bell scenario, where distant observers share a physical system emitted by one common source, a network features several independent sources,
Armin Tavakoli +3 more
doaj +1 more source
Asynchronous reference frame agreement in a quantum network
New Journal of Physics, 2016 An efficient implementation of many multiparty protocols for quantum networks requires that all the nodes in the network share a common reference frame. Establishing such a reference frame from scratch is especially challenging in an asynchronous network
Tanvirul Islam, Stephanie Wehner
doaj +1 more source
Spatial reference frame agreement in quantum networks
New Journal of Physics, 2014 In order to communicate information in a quantum network effectively, all network nodes should share a common reference frame. Here, we propose to study how well m nodes in a quantum network can establish a common spatial reference frame from scratch ...
Tanvirul Islam +3 more
doaj +1 more source
Pretty good state transfer of entangled states through quantum spin chains
New Journal of Physics, 2014 The XX model with uniform couplings represents the most natural choice for quantum state transfer through spin chains. Given that it has long been established that single-qubit states cannot be transferred with perfect fidelity in this model, the notion ...
Rúben Sousa, Yasser Omar
doaj +1 more source
Modeling and optimization of Quality of Service routing in Mobile Ad hoc Networks
Open Physics, 2016 Mobile ad hoc networks (MANETs) are a group of mobile nodes that are connected without using a fixed infrastructure. In these networks, nodes communicate with each other by forming a single-hop or multi-hop network.
Rafsanjani Marjan Kuchaki +2 more
doaj +1 more source
Deconstructing Dense Coding [PDF]
, 2002 The remarkable transmission of two bits of information via a single qubit entangled with another at the destination, is presented as an expansion of the unremarkable classical circuit that transmits the bits with two direct qubit-qubit couplings between ...
Mermin, N. David
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Experimental noiseless linear amplification using weak measurements
New Journal of Physics, 2016 The viability of quantum communication schemes rely on sending quantum states of light over long distances. However, transmission loss can degrade the signal strength, adding noise.
Joseph Ho +3 more
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Storage of up-converted telecom photons in a doped crystal
New Journal of Physics, 2014 We report on an experiment that demonstrates the frequency up-conversion of telecommunication wavelength single-photon-level pulses to be resonant with a ${{{\rm Pr} }^{3+}}$ : ${{{\rm Y}}_{2}}{\rm Si}{{{\rm O}}_{5}}$ crystal.
Nicolas Maring +6 more
doaj +1 more source