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19942026
most citedQuantum secret sharing

3.4k citations

Showing 2014 · quant-phShow all

12 papers · 2 filters

quant-ph2014★ 15 cited

Simulating long-distance entanglement in quantum spin chains by superconducting flux qubits

Stefano Zippilli, Miroslav Grajcar, Evgeni Il'ichev +1

We investigate the performance of superconducting flux qubits for the adiabatic quantum simulation of long distance entanglement (LDE), namely a finite ground-state entanglement be…

quant-ph2014★ 6 cited

Process estimation in presence of time-invariant memory effects

Tomas Rybar, Mario Ziman

Any repeated use of a fixed experimental instrument is subject to memory effects. We design an estimation method uncovering the details of the underlying interaction between the sy…

quant-ph2014★ 5 cited

Perturbative gadgets without strong interactions

Yudong Cao, Daniel Nagaj

Perturbative gadgets are used to construct a quantum Hamiltonian whose low-energy subspace approximates a given quantum -body Hamiltonian up to an absolute error . Typically,…

quant-ph2014★ 9 cited

Optimal entanglement-assisted discrimination of quantum measurements

M. Mikova, M. Sedlak, I. Straka +5

We investigate optimal discrimination between two projective single-qubit measurements in a scenario where the measurement can be performed only once. We consider general setting i…

quant-ph2014★ 26 cited

Optimal single shot strategies for discrimination of quantum measurements

Michal Sedlak, Mario Ziman

We study discrimination of m quantum measurements in the scenario when the unknown measurement with n outcomes can be used only once. We show that ancilla-assisted discrimination p…

quant-ph2014★ 5 cited

Two Notes on Grover's Search: Programming and Discriminating

Daniel Reitzner, Mario Ziman

In this work we address two questions concerning Grover's algorithm. In the first we give an answer to the question how to employ Grover's algorithm for actual search over database…

quant-ph2014★ 2 cited

Momentum switches

Andrew M. Childs, David Gosset, Daniel Nagaj +2

Certain continuous-time quantum walks can be viewed as scattering processes. These processes can perform quantum computations, but it is challenging to design graphs with desired s…

quant-ph2014

Quantum and classical correlations in the solid-state NMR free induction decay

V. E. Zobov, A. A. Lundin

The free-induction decay (FID) of the transverse magnetization in a dipolar-coupled rigid lattice is a fundamental problem in magnetic resonance and in the theory of many-body syst…

quant-ph2014★ 32 cited

Entanglement sensitivity to signal attenuation and amplification

Sergey N. Filippov, Mario Ziman

We analyze general laws of continuous-variable entanglement dynamics during the deterministic attenuation and amplification of the physical signal carrying the entanglement. These…

quant-ph2014★ 20 cited

On The Power Of Coherently Controlled Quantum Adiabatic Evolutions

Maria Kieferova, Nathan Wiebe

A major challenge facing adiabatic quantum computing is that algorithm design and error correction can be difficult for adiabatic quantum computing. Recent work has considered addr…

quant-ph2014★ 28 cited

Device-independent randomness extraction for arbitrarily weak min-entropy source

Jan Bouda, Marcin Pawlowski, Matej Pivoluska +1

Expansion and amplification of weak randomness plays a crucial role in many security protocols. Using quantum devices, such procedure is possible even without trusting the devices…

quant-ph2014★ 8 cited

Distance to boundary and minimum-error discrimination

Erkka Haapasalo, Michal Sedlak, Mario Ziman

We introduce the concept of boundariness capturing the most efficient way of expressing a given element of a convex set as a probability mixture of its boundary elements. In other…