output
19942026
most citedQuantum secret sharing

3.4k citations

Showing 2017 · quant-phShow all

9 papers · 2 filters

quant-ph2017

Shorter unentangled proofs for Ground State Connectivity

Libor Caha, Daniel Nagaj, Martin Schwarz

Can one considerably shorten a proof for a quantum problem by using a protocol with a constant number of unentangled provers? We consider a frustration-free variant of the QCMA-com…

quant-ph2017★ 31 cited

The Feynman-Kitaev computer's clock: bias, gaps, idling and pulse tuning

Libor Caha, Zeph Landau, Daniel Nagaj

We present a collection of results about the clock in Feynman's computer construction and Kitaev's Local Hamiltonian problem. First, by analyzing the spectra of quantum walks on a…

quant-ph2017★ 21 cited

Grover search under localized dephasing

D. Reitzner, M. Hillery

Decoherence in quantum searches, and in the Grover search in particular, has already been extensively studied, leading very quickly to the loss of the quadratic speedup over the cl…

quant-ph2017★ 3 cited

Loss of Information in Quantum Guessing Game

Martin Plesch, Matej Pivoluska

Incompatibility of certain measurements -- impossibility of obtaining deterministic outcomes simultaneously -- is a well known property of quantum mechanics. This feature can be ut…

quant-ph2017★ 225 cited

Measurements in two bases are sufficient for certifying high-dimensional entanglement

Jessica Bavaresco, Natalia Herrera Valencia, Claude Klöckl +5

High-dimensional encoding of quantum information provides a promising method of transcending current limitations in quantum communication. One of the central challenges in the purs…

quant-ph2017★ 59 cited

Layered Quantum Key Distribution

Matej Pivoluska, Marcus Huber, Mehul Malik

We introduce a family of QKD protocols for distributing shared random keys within a network of users. The advantage of these protocols is that any possible key structure needed…

quant-ph2017★ 85 cited

Divisibility of quantum dynamical maps and collision models

S. N. Filippov, J. Piilo, S. Maniscalco +1

Divisibility of dynamical maps is visualized by trajectories in the parameter space and analyzed within the framework of collision models. We introduce ultimate completely positive…

quant-ph2017★ 9 cited

Popescu-Rohrlich box implementation in general probabilistic theory of processes

Martin Plávala, Mário Ziman

It is shown that Popescu-Rohrlich nonlocal boxes (beating the Tsirelson bound for Bell inequality) do exist in the existing structures of both quantum and classical theory. In part…

quant-ph2017★ 12 cited

Finding paths with quantum walks or quantum walking through a maze

Daniel Reitzner, Mark Hillery, Daniel Koch

We show that it is possible to use a quantum walk to find a path from one marked vertex to another. In the specific case of stars connected in a chain, one can find the path fr…